HD64570 Datasheet, PDF (448/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Register
Timer (Channel 3)
Timer Control/Status
Register Channel 3:
TCSR Channel 3
Address
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
7CH
7DH
Bit name
Read/Write
Initial value
7
6
5
CMF ECMI —
R R/W —
0
0
0
4
3
TME —
R/W —
0
0
2
1
0
———
———
0
0
0
Timer Expand Prescale
7DH
Register Channel 3: TEPR
Channel 3
Not used
7EH
Not used
7FH
7CH
7FH
7EH
Compare match flag
Timer enable
0: TCNT and TCONR
are not equal
1: TCNT and TCONR
are equal
0: Stops incrementation
1: Starts incrementation
CMF interrupt enable
0: Disable
1: Enable
Bit name
Read/Write
Initial value
7
6
5
4
3
2
1
0
— — — — — ECKS2 ECKS1 ECKS0
— — — — — R/W R/W R/W
0
0
0
0
0
0
0
0
Expand clock input select
000: BC
001: BC/2
010: BC/4
011: BC/8
100: BC/16
101: BC/32
110: BC/64
111: BC/128
Rev. 0, 07/98, page 432 of 453