JAJSH69 データシート

JAJSH69D January 2018 – June 2022 TCAN4550-Q1

PRODUCTION DATA

8.6.3.1 Interrupts (address = h0820) [reset = h00100000]

Figure 8-28 Interrupts

31	30	29	28	27	26	25	24
CANBUSNOM	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
RU	R	R	R	R	R	R	R
23	22	21	20	19	18	17	16
SMS	UVSUP	UVIO	PWRON	TSD	WDTO	RSVD	ECCERR
R	R/WC	R/WC	R/WC/U	R/WC	RU/WC	R	R/WC
15	14	13	12	11	10	9	8
CANINT	LWU	WKERR	RSVD	RSVD	CANSLNT	RSVD	CANDOM
R/WC	R/WC	R/WC	R	R	R/WC	R	R/WC
7	6	5	4	3	2	1	0
GLOBALERR	nWKRQ	CANERR	RSVD	SPIERR	RSVD	M_CAN_INT	VTWD
R	R	R	R	R	R	R	R

Table 8-20 Interrupts Field Descriptions

Bit	Field	Type	Reset	Description
31	CANBUSNOM	RU	1'b0	CAN Bus normal (Flag and Not Interrupt) Will change to 1 when in normal mode after first Dom to Rec transition
30:24	RSVD	R	7b'0000000	Reserved
23	SMS	R/WC	1'b0	Sleep Mode Status (Flag & Not an interrupt) Only sets when sleep mode is entered by a WKERR, UVIO timeout, or UVIO+TSD fault
22	UVSUP	R/WC	1'b0	Under-Voltage V_SUP and UV_CCOUT
21	UVIO	R/WC	1'b0	Under-Voltage V_IO
20	PWRON	R/WC/U	1'b1	Power ON
19	TSD	R/WC	1'b0	Thermal Shutdown
18	WDTO	RU/WC	1'b0	Watchdog Time Out
17	RSVD	R	1'b0	Reserved
16	ECCERR	R/WC	1'b0	Uncorrectable ECC error detected
15	CANINT	R/WC	1'b0	Can Bus Wake-Up Interrupt
14	LWU	R/WC	1'b0	Local Wake-Up
13	WKERR	R/WC	1'b0	Wake Error
12	RSVD	R	1'b0	Reserved
11	RSVD	R	1'b0	Reserved
10	CANSLNT	R/WC	1'b0	CAN Silent
9	RSVD	R	1'b0	Reserved
8	CANDOM	R/WC	1'b0	CAN Stuck Dominant
7	GLOBALERR	R	1'b0	Global Error (Any Fault)
6	WKRQ	R	1'b0	Wake Request
5	CANERR	R	1'b0	CAN Error
4	RSVD	R	1'b0	RSVD
3	SPIERR	R	1'b0	SPI Error
2	RSVD	R	1'b0	Reserved
1	M_CAN_INT	R	1'b0	M_CAN global INT
0	VTWD	R	1'b0	Global Voltage, Temp or WDTO

GLOBALERR: Logical OR of all faults in registers 0x0820-0824.

WKRQ: Logical OR of CANINT, LWU and WKERR.

CANBUSNOM is not an interrupt but a flag. In normal mode after the first dominant-recessive transition it will set. It will reset to 0 when entering Standby or Sleep modes or when a bus fault condition takes place in normal mode.

CANERR: Logical OR of CANSLNT and CANDOM faults.

SPIERR: Will be set if any of the SPI status register 16'h000C[30:16] is set.

In the event of a SPI underflow, the error is not detected/alerted until the start of the next SPI transaction.
16'h0010[30:16] are the mask for these errors

VTWD: Logical or of UV_CCOUT, UVSUP, UVVIO, TSD, WDTO (Watchdog time out) and ECCERR.

CANINT: Indicates a WUP has occurred; Once a CANINT flag is set, LWU events will be ignored. Flag can be cleared by changing to Normal or Sleep modes.

LWU: Indicates a local wake event, from toggling the WAKE pin, has occurred. Once a LWU flag is set, CANINT events will be ignored. Flag can be cleared by changing to Normal or Sleep modes.

WKERR: If the device receives a wake-up request WUP and does not transition to Normal mode or clear the PWRON or Wake flag before t_INACTIVE, the device will transition to Sleep Mode. After the wake event, a Wake Error (WKERR) will be reported and the SMS flag will be set to 1.

Note:

PWRON Flag is cleared by either writing a 1 or by going to sleep mode or normal mode from standby mode.