21285-AB

Manufacturer Part Number21285-AB
DescriptionMicroprocessor, 21285 Core Logic For SA-110 Microprocessor
ManufacturerIntel Corporation
21285-AB datasheet
 

Specifications of 21285-AB

CaseBGADc99+/00+
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Timer Control Registers

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Registers
7.3.38

Timer Control Registers

The following CSRs control the timers.
TimerNValue is read-only and TimerNClear is write-only.
Table 7-12. Timer Control Registers
Register
Timer1Load
Timer1Value
Timer1Control
Timer1Clear
Timer2Load
Timer2Value
Timer2Control
Timer2Clear
Timer3Load
Timer3Value
Timer3Control
Timer3Clear
Timer4Load
Timer4Value
Timer4Control
Timer4Clear
7.3.39
Timer N Load Register—Offsets 300h, 320h, 340h, and 360h
This register holds the initial value of the counter.
Dword Bit
Name
23:0
Initial counter value
31:24
Timer N Value Register—Offsets 304h, 324h, 344h, and 364h
7.3.40
This register holds the current value of the counter.
Dword Bit
Name
31:0
Current counter value
7-50
Table 7-12
lists the addresses of the registers.
Address
300h
304h
308h
30Ch
320h
324h
328h
32Ch
340h
344h
348h
34Ch
360h
364h
368h
36Ch
R/W
Description
R/W
The act of writing to this register causes the counter to
reload with the initial value.
Reset value: 0.
R
Read only as 0.
R/W
Description
R
Contains the current counter value.
Reset value: Undefined.
21285 Core Logic for SA-110 Datasheet