TJA1086G All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet Rev. 1 — 13 July 2017 23 of 64
NXP Semiconductors
TJA1086G
FlexRay active star coupler)
7.10.2.1 Control register
The read/write Control register allows the host controller to set the operating modes and
to switch the TJA1086G between HC and AP modes.
[1] The TJA1086G sets the APM flag at power-on, in response to a wake-up event (local, remote or TRXD), if
a V
CC
undervoltage is detected in AS_Normal or a V
IO
undervoltage is detected for longer than t
to(uvd)(VIO)
.
[2] Setting the RESET_ERROR bit resets all error status bits in the General Status (bits 8 to 1) and Branch
Status registers (bits 7 to 4).
Table 8. Control register bit description
Bit Symbol Access Default Description
11:10 OPM R/W 00 operating mode:
00: no change
01: AS_Standby
10: AS_Sleep
11: AS_Normal
9:8 CTRL_BR1 R/W 00 branch 1 control:
00: no change
01: Branch_Normal
10: Branch_TxOnly
11: Branch_Disabled
7:6 CTRL_BR2 R/W 00 branch 2 control:
00: no change
01: Branch_Normal
10: Branch_TxOnly
11: Branch_Disabled
5:2 reserved after power-up, write 1111 once to bits [5:2] in
AS_Standby before entering AS_Normal to
minimize the power supply current
1 APM
[1]
R/W 1 Autonomous Power mode
0: disabled
1: enabled
0 RESET_ERROR
[2]
R/W 0 reset error flags and status bits
0: no change
1: reset flags/bits
