IPC/RSL8xxx-XxxxE: user documentation
DOC/IPC_RSL8-E; V1.9
© Syslogic Datentechnik AG, Switzerland, http://www.syslogic.com
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Control Register 8201h
D7
D6
D5
D4
D3
D2
D1
D0
Access
TRIG#
WDTRIG
WDNMI
STOP
TRGSRC
FREEZE
ERREN#
ATTEN#
Read
TRIG#
WDTRIG
WDNMI
STOP
TRGSRC
FREEZE
ERREN#
ATTEN#
Write
0000’0101 (05h)
Reset
Description:
TRIG#
Bus Trigger (currently not supported)
Read
Write
readback of written value
WDTRIG
Watchdog Trigger
Read
Write
readback of written value
Any state change triggers the
watchdog.
WDNMI
Watchdog NMI Configuration
Read
Write
0 = Watchdog activates hardware
reset
1 = Watchdog timeout activates
Non Maskable Interrupt (NMI)
0 = Watchdog activates hardware
reset
1 = Watchdog timeout activates Non
Maskable Interrupt (NMI)
STOP
Stop# Signal State
Read
Write
0 = STOP# inactive (high), red LED
off
1 = STOP# active (low), red LED
on
0 = STOP# inactive (high), red LED
off
1 = STOP# active (low), red LED on
TRGSRC
Trigger source selection
Read
Write
not used, returns 0
FREEZE
Freeze bit
Read
Write
not used, returns 1
ERREN#
Error Interrupt Enable (PC/104 bus IOCHCK# routed to NMI)
Read
Write
always 0 = Error Interrupt on NMI