SLASF44A May 2023 – June 2024 AFE78201 , AFE88201
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
Complex bit access types are encoded to fit into small table cells. The following table shows the codes that are used for access types in this section.
| Access Type | Code | Description |
|---|---|---|
| Read Type | ||
| R | R | Read |
| Write Type | ||
| W | W | Write |
| W | WO | Write only |
| W | WSC | Write self clear |
| Reset or Default Value | ||
| -n | Value after reset or the default value | |
| Register Array Variables | ||
| i,j,k,l,m,n | When used in a register name, an offset, or an address, these variables refer to the value of a register array where the register is part of a group of repeating registers. The register groups form a hierarchical structure and the array is represented with a formula. | |
| y | When used in a register name, an offset, or an address, this variable refers to the value of a register array. | |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | NOP | WO | 0h | No operation. Data written to this field have no effect. Always reads zeros. |
Return to the Register Map.
DAC code for VOUT.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | DATA | R/W | 0h | Data. DAC code for VOUT. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-14 | CRC_ERR_CNT | R/W | 0h | CRC Errors Count Limit Sets the numbers of consecutive SPI CRC frames that must have errors before the status bits is set. 0h = 1 (default); 1h = 2; 2h = 4; 3h = 8 |
| 13-10 | CLKO | R/W | 0h | CLKO Enable Enable the CLK_OUT pin and set the divider value. 0h = CLKO disabled (default); 1h = 1.2288 MHz; 2h = 1.2288 / 2 MHz; 3h = 1.2288 / 4 MHz; 4h = 1.2288 / 8 MHz; 5h = 1.2288 / 16 MHz; 6h =1.2288 / 32 MHz; 7h = 1.2288 / 64 MHz; 8h = 1.2288 / 128 MHz; 9h = 1.2288 / 256 MHz; Ah = 1.2288 / 512 MHz; Bh = 1.2288 / 1024 MHz; Ch = 1'b0; Dh = 1'b0; Eh = 1'b0; Fh = Timer |
| 9 | UBM_IRQ_EN | R/W | 0h | UBM IRQ Enable Enable IRQ to be sent on UARTOUT through UBM. 0h = Disabled (default); 1h = Enabled |
| 8 | IRQ_PIN_EN | R/W | 0h | IRQ Pin Enable Enable IRQ pin functionality. 0h = Disabled (default); 1h = Enabled |
| 7 | CLR_PIN_EN | R/W | 0h | Clear Input Pin Enable Enable pin-based transition to the CLEAR state in UBM and SPI. 0h = Disabled (default); 1h = SCLR pin enabled in SPI mode or SDI pin configured as clear input pin in UBM |
| 6 | UART_DIS | R/W | 0h | UART Disable Disable UART functionality. 0h = UART Enabled (default); 1h = UART Disabled |
| 5 | RESERVED | R | 1h | Reserved. Always set this bit to 1h for proper functionality. |
| 4 | CRC_EN | R/W | 1h | CRC Enable Enable CRC for SPI. 0h = Disabled; 1h = Enabled (default) |
| 3 | IRQ_POL | R/W | 0h | IRQ Polarity 0h = Active low (default); 1h = Active high |
| 2 | IRQ_LVL | R/W | 1h | IRQ Level 0h = Edge sensitive; 1h = Level sensitive (default) |
| 1 | DSDO | R/W | 1h | SDO Hi-Z 0h = Drive SDO during CS = 0; 1h = SDO always Hi-Z (default) |
| 0 | FSDO | R/W | 0h | Fast SDO SDO is driven on negative edge of SCLK. 0h = drive SDO on rising edge of SCLK (launching edge) (default) 1h = drive SDO on falling edge of SCLK (capture edge 1/2 clock early) |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-13 | RESERVED | R/W | 0h | |
| 12 | PD | R/W | 0h | DAC Output Buffer Power-down DAC output set to Hi-Z in power-down. 0h = DAC output buffer enabled (default) 1h = DAC output buffer disabled |
| 11-9 | SR_CLK | R/W | 5h | Slew Clock Rate 0h = 307.2 kHz 1h = 153.6 kHz 2h = 76.8 kHz 3h = 38.4 kHz 4h = 19.2 kHz 5h = 9600 Hz (default) 6h = 4800 Hz 7h = 2400 Hz |
| 8-6 | SR_STEP | R/W | 4h | Slew Step Size 0h = 1 code 1h = 2 codes 2h = 4 codes 3h = 8 codes 4h = 16 codes (default) 5h = 32 codes 6h = 64 codes 7h = 128 codes |
| 5 | SR_EN | R/W | 0h | Slew Enable Enables slew on the output voltage. 0h = Disabled (default) 1h = Enabled |
| 4 | SR_MODE | R/W | 0h | Slew Mode Output slew rate mode select. 0h = Linear Slew (default) 1h = Sinusoidal Slew |
| 3 | RESERVED | R | 0h | |
| 2 | CLR | R/W | 0h | CLEAR State 0h = Normal operation (default) 1h = Force the DAC to the CLEAR state |
| 1-0 | RESERVED | R | 0h |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | GAIN | R/W | 8000h | Gain Set the gain of the DAC output from 0.5 – 1.499985. For example: 0000h = 0.5 8000h = 1.0 (default) FFFFh = 1.499985 |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | OFFSET | R/W | 0h | Offset Adjust the offset of the DAC output, 2's complement number. For example: 0000h = 0 (default) FFFFh = –1 |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | CODE | R/W | 0h | CLEAR State DAC Code DAC code applied in the CLEAR state. See Section 6.3.1.6. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-8 | RESERVED | R | 0h | |
| 7-0 | SW_RST | WSC | 0h |
Software Reset Write ADh to initiate software reset. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15 | BUF_PD | R/W | 1h | ADC Buffer Power-Down 0h = ADC buffer enabled; 1h = ADC buffer powered down (default) |
| 14-8 | HYST | R/W | 8h | Hysteresis The number of codes of hysteresis used when a threshold is exceeded for an ADC measurement of AIN0/AIN1/TEMP. |
| 7-5 | FLT_CNT | R/W | 0h | Fault Count Number of successive faults to trip an alarm. Number of successive faults is programmed value + 1 (1-8 faults). |
| 4 | AIN_RANGE | R/W | 1h | ADC Analog Input Range Can only be set if PVDD ≥ 2.7 V to use 2.5-V range for AIN0 and AIN1 inputs. 0h = 2 × VREF; 1h = 1 × VREF (default) |
| 3 | EOC_PER_CH | R/W | 0h | ADC End-of-Conversion for Every Channel Sends an EOC pulse at the end of each channel instead of at the end of all the channels. 0h = EOC after last channel (default); 1h = EOC for every channel |
| 2-1 | CONV_RATE | R/W | 0h | ADC Conversion Rate This setting only affects the conversion rate for channels AIN0 and AIN1. Rates are based on a 76.8-kHz ADC clock. All other channels use 2560 Hz. 0h = 3840 Hz (default) 1h = 2560 Hz 2h = 1280 Hz 3h = 640 Hz |
| 0 | DIRECT_MODE | R/W | 0h | Direct Mode Enable 0h = Auto mode (default); 1h = Direct mode |
Return to the Register Map.
The ADC custom channel sequencing configuration is shown in Table 7-12.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-8 | RESERVED | R | 0h | |
| 7-4 | STOP | R/W | 8h | Custom Channel Sequencer Stop Index CCS index to stop ADC sequence. Must be ≥ START. If not, STOP is forced to = START. 0h = OFFSET 1h = AIN0 2h = AIN1 3h = TEMP 4h = SD0 (VREF) 5h = SD1 (PVDD) 6h = SD2 (VDD) 7h = SD3 (ZTAT) 8h = SD4 (VOUT) (default) 9h through Fh = GND |
| 3-0 | START | R/W | 0h | Custom Channel Sequencer Start Index CCS index to start ADC sequence. 0h through Fh = Same as STOP field (0h is default) |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-4 | RESERVED | R | 0h | |
| 3 | RBIST | WSC | 0h | RBIST Trigger This trigger initiates a Register BIST. This BIST runs a CRC calculation through the configuration registers (Table 7-11) and compares the result to a stored CRC value in the RBIST_CRC register. |
| 2 | RESERVED | R | 0h | |
| 1 | SHADOWLOAD | WSC | 0h | Shadow Load Trigger This trigger initiates the loading of the OTP array into the parallel latches. If an OTP CRC error is detected, assert this trigger to try and reload the OTP into the memory locations. |
| 0 | ADC | WSC | 0h | ADC Trigger In auto mode, this bit enables or disables the conversions. Manually set to 1 (enable) or 0 (disable). In direct mode, set this bit to start a conversion sequence. The bit is cleared at the end of the sequence. To stop a sequence prematurely, manually clear this bit. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-3 | RESERVED | R | 0h | |
| 2 | OTP_LOAD_SW_RST | R/W | 0h | OTP (One Time Programmable Factory Trimmed Registers)
LOAD with SW RESET OTP reloads with the assertion of a software reset (SW_RST). 0h = No reload with SW_RST 1h = Reload with SW_RST |
| 1 | ALMV_POL | R/W | 0h | Alarm Voltage Polarity This register bit is ORed with the POL_SEL/AIN1 pin (if AIN1_ENB bit is low) to control the VOUT during a hardware reset condition or if alarm is active and alarm action is set appropriately. The following Boolean function is implemented for the internal signal ALMV_POL_o that sets the VOUT voltage: ALMV_POL_o = ALMV_POL OR (POL_SEL/AIN1 AND NOT AIN1_ENB) 0h = Low (0 V) 1h = High (2.5 V) |
| 0 | AIN1_ENB | R/W | 0h | AIN1 Pin Enable This bit determines whether the POL_SEL/AIN1 pin acts as alarm voltage polarity control bit or an input channel to the ADC. 0h = AIN1 pin acts as alarm voltage polarity bit and ADC converts GND 1h = AIN1 pin is an active channel to the ADC |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-14 | SD_FLT | R/W | 2h | Self-Diagnostic Fault Action These bits set the device action after a self-diagnostic fault. 0h = No Action 1h = Set DAC to CLEAR state 2h = Switch to alarm voltage determined by ALMV_POL (default) 3h = Place DAC into Hi-Z (power-down) |
| 13-12 | TEMP_FLT | R/W | 0h | TEMP Fault Action These bits set the device action if the ADC temperature is outside the TEMP_THRESHOLD Hi or Lo thresholds. 0h through 3h = Same as SD_FLT field (default 0h) |
| 11-10 | AIN1_FLT | R/W | 0h | AIN1 Fault Action These bits set the device action if the ADC AIN1 channel is outside the AIN1_THRESHOLD Hi or Lo thresholds. 0h through 3h = Same as SD_FLT field (default 0h) |
| 9-8 | AIN0_FLT | R/W | 0h | AIN0 Fault Action These bits set the device action if the ADC AIN0 channel is outside the AIN0_THRESHOLD Hi or Lo thresholds. 0h through 3h = Same as SD_FLT field (default 0h) |
| 7-6 | CRC_WDT_FLT | R/W | 0h | CRC and WDT Fault Action These bits set the device action when a SPI CRC or SPI Watchdog Timeout error occurs. 0h through 3h = Same as SD_FLT field (default 0h) |
| 5-4 | VREF_FLT | R/W | 2h | VREF Fault Action These bits set the device action when a fault is detected on VREF. 0h through 3h = Same as SD_FLT field a |
| 3-2 | THERM_ERR_FLT | R/W | 0h | Thermal Error Fault Action These bits set the device action when a high temperature error occurs (> 130°C). 0h through 3h = Same as SD_FLT field (default 0h) |
| 1-0 | THERM_WARN_FLT | R/W | 0h | Thermal Warning Fault Action These bits set the device action when a high temperature warning occurs (> 85°C). 0h through 3h = Same as SD_FLT field (default 0h) |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-6 | RESERVED | R | 0h | |
| 5-3 | WDT_UP | R/W | 3h | Watchdog Timer (WDT) Upper Limit If the WDT is enabled and the timer exceeds the programmed value, a WDT error is asserted. All times are based on 1200-Hz clock (1.2288 MHz / 1024). 0h = 53 ms (64 clocks) 1h = 106 ms (128 clocks) 2h = 427 ms (512 clocks) 3h = 853 ms (1024 clocks, default) 4h = 1.7 s (2048 clocks) 5h = 2.56 s (3072 clocks) 6h = 3.41 s (4096 clocks) 7h = 5.12 s (6144 clocks) |
| 2-1 | WDT_LO | R/W | 0h | WDT Lower Limit If the WDT is enabled and the WDT Lower Limit is enabled, then only a write to this register resets the WDT timer. If the write occurs before the WDT Lower Limit time, or after the WDT Upper Limit time, then a WDT error is asserted. If WDT Lower Limit is disabled, then a write to any register resets the timer. This is true for both SPI and UART Break modes. All times are based on 1200-Hz clock (1.2288 MHz / 1024). 0h = Disabled (default) 1h = 53 ms (64 clocks) 2h = 106 ms (128 clocks) 3h = 427 ms (512 clocks) |
| 0 | WDT_EN | R/W | 0h | WDT Enable 0h = Disabled (default); 1h = Enabled |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-8 | Hi | R/W | FFh | High Threshold for Channel AIN0 {[11:4],4b1111} This value is compared (>) against AIN0 data bits[11:0]. |
| 7-0 | Lo | R/W | 0h | Low Threshold for Channel AIN0 {[11:4],4b0000} This value is compared (<) against AIN0 data bits[11:0]. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-8 | Hi | R/W | FFh | High Threshold for Channel AIN1 {[11:4],4b1111} This value is compared (>) against AIN1 data bits[11:0]. |
| 7-0 | Lo | R/W | 0h | Low Threshold for Channel AIN1 {[11:4],4b0000} This value is compared (<) against AIN1 data bits[11:0]. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-8 | Hi | R/W | FFh | High Threshold for Channel TEMP {[11:4],4b1111} This value is compared (>) against TEMP data bits[11:0]. |
| 7-0 | Lo | R/W | 0h | Low Threshold for Channel TEMP {[11:4],4b0000} This value is compared (<) against TEMP data bits[11:0]. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-1 | RESERVED | R | 0h | |
| 0 | REG_MODE | R/W | 0h | Register Mode Configure the rest of the Register Map to be accessed by UART break mode (UBM) or SPI. This register can only be written by the UART Break communication. 0h = SPI Mode (default) 1h = UART Break Mode |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | DATA | R/W | FFFFh | Scratch Data Data written is read back as the inverted value. For example, writing 0xAAAA is read back as 0x5555. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | ID | R |
Unique part number within each lot |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | ID | R |
Encoded lot identification number |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15 | RESERVED | R | 0h | |
| 14-8 | EN | R/W | 00h | GPIO per Pin Enable. (See Table 6-8 for additional configuration required specific to each pin and
communication mode) [14] = GPIO6 [13] = GPIO5 [12] = GPIO4 [11] = GPIO3 [10] = GPIO2 [9] = GPIO1 [8] = GPIO0 0h = GPIO function disable1h = GPIO function enabled For any pin used either for the communication function or not used as an active GPIO, set this bit to 0h. |
| 7 | RESERVED | R | 0h | |
| 6-0 | ODE | R/W | FFh | Pseudo Open Drain Enable GPIO output enable and pseudo open drain functionality on the GPIO pins. (See Table 6-8 for additional configuration required specific to each pin and communication mode.) [6] = GPIO6 [5] = GPIO5 [4] = GPIO4 [3] = GPIO3 [2] = GPIO2 [1] = GPIO1 [0] = GPIO0 0h = Push-pull output enabled1h = Pseudo open-drain output enabled |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-7 | RESERVED | R | 0h | |
| 6-0 | DATA | R/W | 7Fh |
GPIO pin data. For GPIO input this bit must be written as 1 and GPIO_CFG.ODE = 1 and GPIO_CFG.EN = 1. Reading this register reads the pin value when the pin is correctly enabled. (See Table 6-8 for additional configuration required specific to each pin and communication mode) For GPIO output this bit sets the pin value. [6] = GPIO6 [5] = GPIO5 [4] = GPIO4 [3] = GPIO3 [2] = GPIO2 [1] = GPIO1 [0] = GPIO0 |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-14 | RESERVED | R | 3h | |
| 13 | SD_FLT | R/W | 1h | SD Fault Mask 0h = Fault asserts IRQ 1h = The mask prevents IRQ or Alarm being triggered
(default). |
| 12 | OSC_FAIL | R/W | 0h | OSC_FAIL Fault Mask Same as SD Fault Mask (default 0h). |
| 11-9 | RESERVED | R | 7h | |
| 8 | OTP_CRC_ERR | R/W | 1h | OTP CRC Error Mask Same as SD Fault Mask (default 1h). |
| 7 | CRC_FLT | R/W | 1h | SPI CRC Fault Mask Same as SD Fault Mask (default 1h). |
| 6 | WD_FLT | R/W | 1h | Watchdog Fault Mask Same as SD Fault Mask (default 1h). |
| 5 | VREF_FLT | R/W | 0h | VREF Fault Mask Same as SD Fault Mask (default 0h). |
| 4 | ADC_AIN1_FLT | R/W | 1h | ADC AIN1 Fault Mask Same as SD Fault Mask (default 1h). |
| 3 | ADC_AIN0_FLT | R/W | 1h | ADC AIN0 Fault Mask Same as SD Fault Mask (default 1h). |
| 2 | ADC_TEMP_FLT | R/W | 1h | ADC TEMP Fault Mask Same as SD Fault Mask (default 1h). |
| 1 | THERM_ERR_FLT | R/W | 1h | Temperature > 130°C Error Mask Same as SD Fault Mask (default 1h). |
| 0 | THERM_WARN_FLT | R/W | 1h | Temperature > 85°C Warning Mask Same as SD Fault Mask (default 1h). |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-11 | RESERVED | R | 1Fh | |
| 10 | RBIST_DONE | R/W | 1h | RBIST Done Mask 0h = Fault asserts IRQ 1h =
The mask prevents IRQ or Alarm being triggered (default). |
| 9 | RBIST_FAIL | R/W | 1h | RBIST Failed Fault Mask Same as RBIST Done Mask (default 1h). |
| 8 | RESERVED | R | 1h | |
| 7 | SR_BUSYn | R/W | 1h | Slew Rate Not Busy Mask Same as RBIST Done Mask (default 1h). |
| 6 | ADC_EOC | R/W | 1h | ADC End Of Conversion Mask Same as RBIST Done Mask (default 1h). |
| 5-4 | RESERVED | R | 3h | |
| 3 | BREAK_FRAME_ERR | R/W | 1h | Break Frame Error Fault Mask Same as RBIST Done Mask (default 1h). |
| 2 | BREAK_PARITY_ERR | R/W | 1h | Break Parity Error Fault Mask Same as RBIST Done Mask (default 1h). |
| 1 | UART_FRAME_ERR | R/W | 1h | UART Frame Error Fault Mask Same as RBIST Done Mask (default 1h). |
| 0 | UART_PARITY_ERR | R/W | 1h | UART Parity Error Fault Mask Same as RBIST Done Mask (default 1h). |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15 | GEN_IRQ | R | 0h | General IRQ OR of all the unmasked bits in the
GEN_STATUS register. 0h = All of the unmasked bits of the GEN_STATUS register are low 1h = At least one of the unmasked bits in the GEN_STATUS register is high |
| 14 | RESERVED | R | 0h | |
| 13 | SD_FLT | R | 0h | Self Diagnostic (SD) Fault 0h = All self diagnostic channels are within threshold limits 1h = At least one of the self diagnostic channels has failed |
| 12 | OSC_FAIL | R | 0h | Oscillator Fault Oscillator failed to start. This
bit holds ALARM low and does not feed IRQ. 0h = Oscillator started; 1h = Oscillator has failed to start |
| 11-10 | CRC_CNT | R | 0h | CRC Fault Counter If counter limit ≤ 4 then bits[1:0] of the counter are shown here. If the counter limit = 8 then bits[2:1] of the counter are shown. |
| 9 | OTP_LOADEDn | R | 1h | OTP NOT Loaded Clears when OTP has loaded at
least once. Keeps ALARM asserted until OTP finishes loading. Does not feed IRQ. 0h = OTP has loaded at least once; 1h = OTP has not finished loading |
| 8 | OTP_CRC_ERR | R | 0h | OTP CRC Error Maskable fault. An error occurred
with the OTP CRC calculation. Sticky, cleared by reading register, unless condition still persist. 0h = No OTP CRC fault; 1h = OTP CRC fault |
| 7 | CRC_FLT | R | 0h | CRC Fault Maskable fault. Invalid CRC value
transmitted during SPI frame. Sticky, cleared by reading register, unless condition still persist. 0h = No CRC fault; 1h = CRC fault |
| 6 | WD_FLT | R | 0h | Watchdog Timer Fault Maskable fault. Sticky, cleared by reading register, unless condition still persist. 0h = No watchdog fault; 1h = Watchdog fault |
| 5 | VREF_FLT | R | 0h | Invalid Reference Voltage Maskable fault. OR with
FORCE_FAIL.VREF_FLT bit. Active signal, set as long as condition is true. Direct input from analog circuit. 0h = Valid VREF voltage; 1h = Invalid VREF voltage |
| 4 | ADC_AIN1_FLT | R | 0h | ADC AIN1 Fault. Maskable fault. 0h = AIN1 ADC measurement within threshold limits 1h = AIN1 ADC measurement outside threshold limits |
| 3 | ADC_AIN0_FLT | R | 0h | ADC AIN0 Fault. Maskable fault. 0h = AIN0 ADC measurement within threshold limits 1h = AIN0 ADC measurement outside threshold limits |
| 2 | ADC_TEMP_FLT | R | 0h | ADC Temp Fault. Maskable fault. 0h = TEMP ADC measurement within threshold limits 1h = TEMP ADC measurement outside threshold limits |
| 1 | THERM_ERR_FLT | R | 0h | Temperature > 130°C error. Maskable fault. OR with FORCE_FAIL.THERM_ERR_FLT bit. Active signal, set as long as condition is true. Direct input from analog circuit. 0h = Temperature ≤ 130°C; 1h = Temperature > 130°C |
| 0 | THERM_WARN_FLT | R | 0h | Temperature > 85°C warning. Maskable fault. OR with FORCE_FAIL.THERM_WARN_FLT bit. Active signal, set as long as condition is true. Direct input from analog circuit. 0h = Temperature ≤ 85°C; 1h = Temperature > 85°C |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15 | ALARM_IRQ | R | 0h | Alarm IRQ OR of all the unmasked bits in the
ALARM_STATUS register. 0h = All of the unmasked bits of the ALARM_STATUS register are low 1h = At least one of the unmasked bits in the ALARM_STATUS register is high |
| 14-13 |
RESERVED |
R | 0h | |
| 12 | OTP_BUSY | R | 1h | OTP Busy Status = 1h at power up while the OTP is
being loaded into the trim latches. 0h = OTP has completed loading into the device 1h = OTP is being loaded into the device |
| 11 | RBIST_MODE | R | 0h | Enables RBIST to run. 0h = RBIST disabled; 1h = RBIST enabled |
| 10 | RBIST_DONE | R | 0h | RBIST Completed. Maskable fault. Sticky, cleared by reading register, unless condition still persist. 0h = RBIST has not completed; 1h = RBIST has completed |
| 9 | RBIST_FAIL | R | 0h | RBIST Failed. Maskable fault. Sticky, cleared by reading register, unless condition still persist. 0h = RBIST has passed; 1h = RBIST has failed |
| 8 | RESET | R | 1h | Device Reset Occurred. Status only. Does not feed
IRQ. Sticky, cleared by reading register, unless condition still persist. 0h = Device has not reset since last read of register 1h = Device has reset since last read of register |
| 7 | SR_BUSYn | R | 1h | Slew Rate Not Busy. Maskable fault. 0h = DAC is slewing to the target code 1h = DAC_OUT has reached the DAC_DATA. If slew rate is disabled, then this signal produces a rising edge within 3 internal clock cycles. If slew rate is enabled, this signal creates an IRQ event when the DAC_OUT has reached the DAC_DATA. At this time, slew rate can be safely disabled. If slew rate is disabled prior to DAC_OUT = DAC_DATA then a jump of DAC_OUT occurs. This can cause an unwanted fast transition on VOUT. |
| 6 | ADC_EOC | R | 0h | ADC End of Conversion (EOC). Maskable fault. Sticky, cleared by reading register, unless condition still persist. 0h = No EOC since last read of register; 1h = ADC end of conversion |
| 5 | ADC_BUSY | R | 0h | ADC Busy. Status only. Does not feed IRQ. Active
signal, set as long as condition is true. 0h = No ADC activity; 1h = ADC is actively converting |
| 4 | PVDD_HI | R | 0h | PVDD High. Status only. Does not feed IRQ. Set as
long as condition is true. 0h = PVDD < 2.7 V; 1h = PVDD ≥ 2.7 V |
| 3 | BREAK_ FRAME_ERR |
R | 0h | Incorrect Stop Bit During Break Character. Maskable
fault. Applies to UARTIN. Sticky, cleared by reading register, unless condition still persist. 0h = No break frame error; 1h = Break frame error |
| 2 | BREAK_ PARITY_ERR |
R | 0h | Incorrect parity (ODD) bit during break character.
Maskable fault. Applies to UARTIN. Sticky, cleared by reading register, unless condition still persist. 0h = No break parity error; 1h = Break parity error |
| 1 | UART_ FRAME_ERR |
R | 0h | Incorrect Stop Bit During UART Character. Maskable
fault. Applies to UARTIN. Sticky, cleared by reading register, unless condition still persist. 0h = No UART frame error; 1h = UART frame error |
| 0 | UART_ PARITY_ERR |
R | 0h | Incorrect Parity (ODD) Bit During UART Character.
Maskable fault. Applies to UARTIN. Sticky, cleared by reading register, unless condition still persist. 0h = No UART parity error; 1h = UART parity error |
Return to the Register Map.
The limits for Self Diagnostic (SD) Alarm ADC Thresholds are shown in Table 6-5.| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-9 | RESERVED | R | 0h | |
| 8 | SD4_FAIL | R | 0h | SD4 (VOUT) Limit Fail |
| 7 | SD3_FAIL | R | 0h | SD3 (ZTAT) Limit Fail |
| 6 | SD2_FAIL | R | 0h | SD2 (VDD) Limit Fail |
| 5 | SD1_FAIL | R | 0h | SD1 (PVDD) Limit Fail |
| 4 | SD0_FAIL | R | 0h | SD0 (VREF) Limit Fail |
| 3 | TEMP_FAIL | R | 0h | TEMP Limit Fail |
| 2 | AIN1_FAIL | R | 0h | AIN1 Limit Fail |
| 1 | AIN0_FAIL | R | 0h | AIN0 Limit Fail |
| 0 | RESERVED | R | 0h |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-12 | RESERVED | R | 0h | |
| 11-0 | DATA | R | 0h | Converted Value of Voltage on Pin AIN0 |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-12 | RESERVED | R | 0h | |
| 11-0 | DATA | R | 0h | Converted Value of Voltage on Pin AIN1 |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-12 | RESERVED | R | 0h | |
| 11-0 | DATA | R | 0h | Converted Value of Temperature |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-12 | RESERVED | R | 0h | |
| 11-0 | DATA | R | 0h | Converted Value of Voltage on Self-Diagnostic (SD) MUX Input |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-12 | RESERVED | R | 0h | |
| 11-0 | DATA | R | 0h | ADC Comparator Offset This value reports the offset measured in the device, and can be used to adjust each conversion value. If ADC_BYP.OFST_BYP_EN is set, then the value in ADC_BYP.DATA is used as the offset. This value is not affected by ADC_BYP. |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | DATA | R | 0h | DAC Code Applied to the Analog Circuit |
Return to the Register Map.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-12 | RESERVED | R | 0h | |
| 11-0 | DATA | R | 0h | ADC Data for Each Conversion Does not include ADC_OFFSET.DATA adjustment. Is not affected by ADC_BYP.DATA. |
Return to the Register Map.
ADC_BYP is shown in ADC_BYP Register Field Descriptions.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15 | DATA_BYP_EN | R/W | 0h | Data Bypass Enable Applies ADC_BYP.DATA to the ADC channel being converted. ADC_OFFSET is ignored. Do not set OFST_BYP_EN and DATA_BYP_EN at the same time. If OFST_BYP_EN is also set, DATA_BYP_EN takes priority over OFST_BYP_EN. After a channel is converted, the ADC_BYP.DATA value appears in the readback register for the converted channel and is used to calculate faults. 0h = Data bypass disabled (default) 1h = Data bypass enabled |
| 14 | OFST_BYP_EN | R/W | 0h | Offset Bypass Enable Overrides the offset register with the ADC_BYP.DATA value. When using this bit, the ADC_BYP.DATA field is processed as 2's complement. Do not set OFST_BYP_EN and DATA_BYP_EN at the same time. 0h = Offset bypass disabled (default) 1h = Offset bypass enabled |
| 13 | DIS_GND_SAMP | R/W | 0h | Disable GND Sampling This bit disables the sampling of GND during SAR activity. The sampling of GND is used to fully discharge the sampling CAP to reduce channel crosstalk. 0h = GND sampling enabled (default) 1h = GND sampling disabled |
| 12 | RESERVED | R | 0h | |
| 11-0 | DATA | R/W | 0h | Bypass Data |
Return to the Register Map.
Force failures for fault detection.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15 | CRC_FLT | R/W | 0h | Force CRC Failure on SDO by Inverting the CRC Byte 0h = No force failure of CRC (default) 1h = Force failure of CRC |
| 14 | VREF_FLT | R/W | 0h | Force Reference Voltage Failure. Analog signal. 0h = No force failure of VREF (default) 1h = Force failure of VREF |
| 13 | THERM_ERR_FLT | R/W | 0h | Force Temperature > 130°C Thermal Error. Analog
signal. 0h = No force temperature > 130°C error (default) 1h = Force temperature > 130°C error |
| 12 | THERM_WARN_FLT | R/W | 0h | Force Temperature > 85°C thermal Warning. Analog
signal. 0h = No force temperature > 85°C warning (default) 1h = Force temperature > 85°C warning |
| 11-10 | RESERVED | R/W | 0h | |
| 9 | SD4_HI_FLT | R/W | 0h | SD4 (VOUT) High Limit Failure. ADC measurement. 0h = No force failure of SD4 (VOUT) (default) 1h = Force failure of SD4 (VOUT) |
| 8 | SD4_LO_FLT | R/W | 0h | SD4 (VOUT) Low limit failure. ADC measurement. 0h = No force failure of SD4 (VOUT) (default) 1h = Force failure of SD4 (VOUT) |
| 7 | SD3_HI_FLT | R/W | 0h | SD3 (ZTAT) High Limit Failure. ADC measurement. 0h = No force failure of SD3 (ZTAT) (default) 1h = Force failure of SD3 (ZTAT) |
| 6 | SD3_LO_FLT | R/W | 0h | SD3 (ZTAT) Low Limit Failure. ADC measurement. 0h = No force failure of SD3 (ZTAT) (default) 1h = Force failure of SD3 (ZTAT) |
| 5 | SD2_HI_FLT | R/W | 0h | SD2 (VDD) High Limit Failure. ADC measurement. 0h = No force failure of SD2 (VDD) (default) 1h = Force failure of SD2 (VDD) |
| 4 | SD2_LO_FLT | R/W | 0h | SD2 (VDD) Low Limit Failure. ADC measurement. 0h = No force failure of SD2 (VDD) (default) 1h = Force failure of SD2 (VDD) |
| 3 | SD1_HI_FLT | R/W | 0h | SD1 (PVDD) High Limit Failure. ADC measurement. 0h = No force failure of SD1 (PVDD) (default) 1h = Force failure of SD1 (PVDD) |
| 2 | SD1_LO_FLT | R/W | 0h | SD1 (PVDD) Low Limit Failure. ADC measurement. 0h = No force failure of SD1 (PVDD) (default) 1h = Force failure of SD1 (PVDD) |
| 1 | SD0_HI_FLT | R/W | 0h | SD0 (VREF) High Limit Failure. ADC measurement. 0h = No force failure of SD0 (VREF) (default) 1h = Force failure of SD0 (VREF) |
| 0 | SD0_LO_FLT | R/W | 0h | SD0 (VREF) Low Limit Failure. ADC measurement. 0h = No force failure of SD0 (VREF) (default) 1h = Force failure of SD0 (VREF) |
Return to the Register Map.
TIMER Configuration 0.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-4 | RESERVED | TO | 0h | |
| 3-2 | CLK_SEL | R/W | 0h | Clock Select Selects the timer clock frequency. 0h = None (default) 1h = 1.2288 MHz 2h = 1.200 kHz 3h = 1.171 Hz |
| 1 | INVERT | R/W | 0h | Invert Output Invert the Timer output. By default, the output is set to 1 when the counter is ≥ SET_TIME (3Dh). |
| 0 | ENABLE | R/W | 0h | Timer Enable The CLK_OUT pin must also be configured to output the Timer. |
Return to the Register Map.
TIMER Configuration 1.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | PERIOD | R/W | 0h |
This field defines the period of the timer. The period is the product of (PERIOD + 1) and the clock period of CLK_SEL. For example, CLK_SEL = 2h (1200 Hz), The period is (PERIOD + 1) × 853 ms. |
Return to the Register Map.
TIMER Configuration 2.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | SET_TIME | R/W | 0h | The SET_TIME determine when the output of the timer goes high. The bits define the duty cycle of the timer (PERIOD – SET_TIME). The timer starts out as 0 and transitions to 1 when the SET_TIME is met. The polarity of the timer can be inverted using the TIMER_CFG_0.INVERT bit. |
Return to the Register Map.
CRC read.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | CRC | R/O | 0h | Calculated CRC for RBIST or SHADOWLOAD. Final value is calculated internally. This value changes while RBIST or shadow load are running. |
Return to the Register Map.
RBIST CRC.
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15-0 | RBIST CRC | R/W | 0h | Calculated CRC for Register RBIST |