FS9912

Rev. 3.6

24/34

11.4 8 Bits Timer

Address

Name

Content

00CH

TMOUT

TMOUT [7:0]

00DH

TMCON

TRST

WTS2

WTS1

WTS0

TMEN

INS2

INS1

INS0

8 bits Counter

Reset

EN

CK

Out

8 to 1

Mux

Timer Interrupt Signal

TMOUT[7:0]

TRST

128Hz Input

TMEN

Write a “0” to bit 7 of address 0Dh, the CPU will send a low pulse to TRST and reset the 8-bit counter.

Then read bit 7 of 0DH to get “1”.

TMEN=1, the 8-bit counter will be enabled. TMEN=0, the 8-bit counter will stop.

INS [2:0] selects timer interrupt source. The selection codes are as follows, 000: TMOUT [0], 001 TMOUT

[1], 010: TMOUT [2], 011: TMOUT [3], 100: TMOUT [4], 101: TMOUT [5], 110: TMOUT [6], 111: TMOUT

[7].

TMOUT [7:0] is the output of the 8-bit counter. It is read-only.

11.5 Dual 24 Bit Programmable Counter

Address

Name

Content

014H

CTAH

CTA [23:16]

015H

CTAM

CTA [15:8]

016H

CTAL

CTA [7:0]

017H

CTBH

CTB [23:16]

018H

CTBM

CTB [15:8]

019H

CTBL

CTB [7:0]

01AH

FQCON

LOAD

FCM1

FCM0

FCRST

GT2

GT1

GT0