bit0
WCR
Bit1
Bit2
Bit2
R
S
Watchdog
Counter
on
off
r
w
r/w
Reset
generator
Watchdog
Flip flop
RESET
WDG_REL
R
Read
WCR
14.318 MHz
w
>=1
3.11.3
LED Output
The LED Output can be turned on and off via the LED Control Register LEDCR. After reset, the LED is
turned on by hardware and turned off when running the first instructions of the system BIOS.. The LED
can be used for any user-defined purpose.
7
6
5
4
3
2
1
0
LEDCR
RES
LED_ON
I/O
LED Control Register
reset: xxxxxxx1
$168
W
LED_ON
LED on/off. When this bit is set the LED is turned on. This is the state
immediately after a hardware reset. When reset, the LED is turned off. The
BIOS resets this bit within its first instructions in order to indicate that the
BIOS has begun to run.
RES
Reserved for future use.
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