TSS463-AA ATMEL Corporation, TSS463-AA Datasheet - Page 31
TSS463-AA
Manufacturer Part Number
TSS463-AA
Description
Van (ISO Standard 11519-3) Datalink Controller With Serial Interface.
Manufacturer
ATMEL Corporation
Datasheet
1.TSS463-AA.pdf
(60 pages)
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IDLE: Idle Command
ACTI: Activate Command
REAR: Re-Arbitrate Command
MSDC: Manual System
Diagnosis Clock
Line Status Register (0x04)
SPG: Sleeping
IDG: Idling
Sa, Sb and Sc: Diagnosis
System Status Bits
4205A–AUTO–03/03
(See Section “Idle and Activate Commands”, page 52). If the user sets the Idle bit, the
circuit will enter idle mode. In idle mode the oscillator will operate, but the TSS463AA
will not transmit or receive anything on the bus, and the TxD output will be in three state.
One: Idle active
Zero: Idle inactive
(See Section “Idle and Activate Commands”, page 52). The Activate command will put
the circuit in the active mode, i.e it will transmit and receive normally on the bus. When
the circuit is in activate mode the TxD three-state output is enabled.
One: Activate active
Zero: Activate inactive
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 “Message Data (string pointed
by: Message Pointer Register + 1)”, page 44, the user can use the manual SDC com-
mand to generate a SDC pulse for the diagnosis system.
This MSDC pulse should be high at least 2 timeslot clocks.
•
•
•
Default mode at reset
•
Read only register
Default value after reset: 0bx01xxx00.
This register reports the operation mode of the TSS463AA 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
Diagnosis System Status Bits
7
X
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
TSS463-AA
TXG
1
RXG
0
31
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