SNAU287 November 2023
The following guide allows the user to quickly configure the LMK3H0102EVM to evaluate the pre-programmed I2C or OTP configurations.
If using software to program the device registers using I2C, install the TICS Pro software.
Confirm the EVM default power configuration is set per Figure 3-2/Table 3-1 to power the LMK3H0102 using the on-board DC/DC converters with VDD = VDDO = 3.3 V.
Set the control pin jumpers to select the desired start-up mode, as well as the other pin configuration settings, according to Table 3-2 for OTP Mode or Table 3-3 for I2C Mode. The default configuration is for I2C Mode.
For OTP mode, Table 3-4 shows the default settings of the different OTP pages for the LMK3H0102V33 preprogrammed device configuration.
Connect the micro-B USB cable to the micro-B USB port of the EVM, and connect the USB-A end to a PC.
Observe any active clock on the OUT[1:0] SMA ports.
OUT0 is AC-coupled, and OUT1 is DC-coupled.
REF_CTRL is DC-coupled to the SMAs with a 33-Ω termination resistor in series.
Use 50-Ω coax cables to connect the test equipment to the output SMA ports. If making a single-ended measurement on a differential output, terminate the unused SMA port with a 50-Ω load.
To minimize output clock switching noise from affecting jitter-sensitive measurements, terminate any unused active output clock pair using 50-Ω SMA loads; otherwise, power-down unused output clocks via register programming.
Parameter | OTP Page 0 | OTP Page 1 | OTP Page 2 | OTP Page 3 |
---|---|---|---|---|
OUT0 Frequency | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
OUT0 Output Format | 100-Ω LP-HCSL | 100-Ω LP-HCSL | 100-Ω LP-HCSL | 100-Ω LP-HCSL |
OUT0 Enable | Enable | Enable | Enable | Enable |
OUT0 Slew Rate | 2.3 to 3.4 V/ns | 2.3 to 3.4 V/ns | 2.3 to 3.4 V/ns | 2.3 to 3.4 V/ns |
OUT0 Amplitude | 755 mV (typical) | 755 mV (typical) | 755 mV (typical) | 755 mV (typical) |
OUT0 Disable Behavior | GND | GND | GND | GND |
OUT1 Frequency | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
OUT1 Output Format | 100-Ω LP-HCSL | 100-Ω LP-HCSL | 100-Ω LP-HCSL | 100- LP-HCSL |
OUT1 Enable | Enable | Enable | Enable | Enable |
OUT1 Slew Rate | 2.3 to 3.4 V/ns | 2.3 to 3.4 V/ns | 2.3 to 3.4 V/ns | 2.3 to 3.4 V/ns |
OUT1 Amplitude | 755 mV (typical) | 755 mV (typical) | 755 mV (typical) | 755 mV (typical) |
OUT1 Disable Behavior | GND | GND | GND | GND |
REF_CTRL Behavior | CLK_READY | CLK_READY | CLK_READY | CLK_READY |
FOD0 Frequency | 200 MHz | 200 MHz | 200 MHz | 200 MHz |
FOD1 Frequency | 200 MHz | 200 MHz | 200 MHz | 200 MHz |
SSC Enable | Disable | Disable | Disable | Disable |
SSC Modulation Type | Down-spread | Down-spread | Down-spread | Down-spread |
SSC Modulation Depth | 0% | –0.1% | –0.3% | –0.5% |