HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 321

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

7.2.3
The timer control/status register (TCSR), provided for each of channels 0, 1, 2, and 3, requests
interrupts and controls the timer up-counter (TCNT) operation.
Timer Control/Status Register (TCSR)
Note: TCONR is a write-only register. It always reads 0000H.
Read/Write
Initial value
Timer constant
Read/Write
Initial value
Timer constant
Bit name
Read/Write
Initial value
TCONRH
TCONRL
Compare match flag
0:
1:
Note:
TCNT and TCONR
are not equal
TCNT and TCONR
are equal
Bit 5 and bits 3–0 are reserved.
These bits always read 0 and must be set to 0.
CMF
W
W
2
2
R
7
1
7
1
7
0
15
7
CMF interrupt enable
0:
1:
ECMI
R/W
W
W
2
2
Disable
Enable
6
1
6
1
6
0
14
6
W
W
—
2
2
—
5
1
5
1
5
0
13
5
Timer enable
0:
1:
Stops incrementing
Starts incrementing
TME
R/W
W
W
2
2
4
1
4
1
4
0
12
4
W
W
2
2
—
3
1
3
1
3
—
0
11
3
Rev. 0, 07/98, page 305 of 453
—
W
W
2
2
2
—
2
1
2
1
0
10
2
—
W
2
W
2
1
1
1
1
1
—
0
1
9
—
W
W
2
2
0
1
0
1
0
—
0
8
0