TSS463C ATMEL Corporation, TSS463C Datasheet - Page 31

• Manufacturer Part Number: TSS463C
• Description: Van Data Link Controller With Serial Interface
• Manufacturer: ATMEL Corporation

REAR: Re-Arbitrate command.
MSDC: Manual System
Diagnosis Clock.
SPG: Sleeping
IDG: Idling
Sa, Sb and Sc: Diagnosis
System Status Bits
TXG: Transmitting
RXG: Receiving
7601B–AUTO–02/06
Line Status Register (0x04)
This command will, after the current attempt, reset the retry counter and re-arbitrate the
messages to be transmitted in order to find the highest priority message to transmit.
One: Re-arbitrate active
Zero: Re-arbitrate inactive
Rather than using the SDC divider described in Section “SDC Signal (Synchronous
Diagnosis Clock)” , the user can use the manual SDC command to generate a SDC
pulse for the diagnosis system.
This MSDC pulse should be high at least 2 timeslot clocks.
•
•
•
Default mode at reset.
•
Table 8. Diagnosis System Status Bits
•
If this status bit is active, it indicates that the TSS463C has chosen an identifier to trans-
mit, and it will continue to make transmission attempt for this message until it succeeds
or the retry count is exceeded.
The receiving indicates that there is activity on the bus.
Note: For safe modification of active channel registers both bits should be inactive
(except “abort” command).
Read only register
Default value after reset: 0bx01xxx00.
This register reports the operation mode of the TSS463C in the Sleep an Idle bits
(Command Register located at address 0×03) as well as the diagnosis system
status bits Sa to Sc discussed in the section “Diagnosis System” on page 22
Sa and Sb
Sc: As soon as one of the three inputs (RxD2, RxD1, RxD0) differs from the others
in the input comparison analysis performed by the diagnosis system, Sc is set.
The only ways to reset this status bit is through the RI signal or a general reset.
X
7
Sb
0
0
1
1
SPG
6
Sa
0
1
0
1
IDG
5
Sc
4
Nominal mode, differential communication
Major error, fault on DATA and DATA
Degraded over DATA, fault on DATA
Degraded over DATA, fault on DATA
Communication Indication
Sb
3
Sa
2
TXG
TSS463C
1
RXG
0
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