APPENDIX
Appendix 2. Control registers
ꢀꢀTimer mode
(b15)
b7
(b8)
b0 b7
Timer B0 register (Addresses 5116, 5016)
Timer B1 register (Addresses 5316, 5216)
Timer B2 register (Addresses 5516, 5416)
b0
Bit
Function
Any value in the range from “000016” to “FFFF16” can be set.
At reset R/W
Reference
8-9
15 to 0
Undefined RW
Assuming that the set value = n, the counter divides the count source frequency by (n + 1).
When reading, the register indicates the counter value.
Note: Reading from or writing to this register must be performed in a unit of 16 bits.
b7 b6 b5 b4 b3 b2 b1 b0
Timer Bi mode register (i = 0 to 2) (Addresses 5B16 to 5D16)
X
X X 0 0
X
Bit
0
Bit name
Function
At reset R/W
Reference
b1 b0
8-9
Operating mode select bits
0
0
0
0
0
RW
RW
RW
RW
RW
0 0 : Timer mode
1
These bits are invalid in timer mode.
2
3
4
This bit is invalid in timer mode; its value is undefined at reading.
5
Undefined RO
b7 b6
8-7
Count source select bits
6
7
0
0
RW
RW
0 0 : f2
0 1 : f16
1 0 : f64
1 1 : f512
X : It may be either “0” or “1.”
7906 Group User’s Manual Rev.2.0
20-26
RENESAS [ RENESAS TECHNOLOGY CORP ]
