W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 74

• Manufacturer Part Number: W90220F
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
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Timer Initial Control Register1 (TICR1)
Port address : 0xf0000041
7
Bit8_31 : A 24-bit register for the initial counter value.
Timer Control Register2 (TCR2)
Port address : 0xf0000042
Bit 0
Bit1
Bit2
Bit24_31 Pre-Scalar : A pre-scalar value can be used to divide the input clock.
Timer Initial Control Register1 (TICR2)
Port address : 0xf0000043
0
TI
0
reserved
CE
1
Counter Enable bit : Setting the CE bit to one causes the timer to begin decrementing
Interrupt Enable bit : When IE is set to one and the counter decrements to zero, the
Timer interrupt bit : The timer sets this bit to one to indicate that it has decremented
to zero. this bit remain one until software sets it to zero.
Setting the CE bit to zero stops the timer.
timer asserts its interrupt signal to interrupt CPU.
IE
2
31
23
8
3
Read/Write
Read/Write
Read/Write
Reserved
Timer Initial Count
Power-on Default : --
Power-on Default : --
Power-on Default : --
24
Pre-scale
31
W90220F
Version 0.84