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Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
September 2006 DM
Order Number: 252480-006US 413
Timers—Intel
®
IXP42X product line and IXC1100 control plane processors
14.4.5 General-Purpose Timer 1 Reload
14.4.6 Watch-Dog Timer
Register Name: OST_TIM1_RL
Hex Offset Address: 0x C800 5010 Reset Hex Value: 0x00000000
Register
Description:
General-Purpose Timer 1 Reload
Access: Read/Write.
31 210
reload_val
timer
control
Register
OST_TIM1_RL
Bits Name Description
31:2 reload_val
Value loaded into ost_tim1. bits 1 and 0 will be 00.
Note: As the counter counts to zero writing a value of X to these bits will
generate interrupts at intervals of (X*4)+1 cycles.
1 tim1_one_shot
The one shot control bit specifies what action should be taken when the general-
purpose down counter reaches zero. If the one-shot control bit is set to zero,
the counter will load the reload value and continue to count down after reaching
a value of zero. If the one-shot control bit is set to one the counter will load the
“reload value register” and stop counting.
0 tim1_enable
The cnt_enable register controls whether the counter is enabled for counting.
When set to one the counter is enabled.
Register Name: OST_WDOG
Hex Offset Address: 0x C800 5014 Reset Hex Value: 0xFFFFFFFF
Register
Description:
Watch-Dog Counter
Access: Read/Write.
31 0
tim_val
Register
OST_WDOG
Bits Name Description
31:0 tim_val
Watch-dog down counter value. A Write to this register has no effect unless
ost_wdog_key=0x482E.