m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 459

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

APPENDIX
Appendix 2. Control registers
20-28
Timer B0 register (Addresses 51
Timer B1 register (Addresses 53
Timer B2 register (Addresses 55
Note: Reading from or writing to this register must be performed in a unit of 16 bits.
X : It may be either “0” or “1.”
Timer Bi mode register (i = 0 to 2) (Addresses 5B
15 to 0 Any value in the range from “0000
Bit
Bit
Timer mode
0
1
2
3
4
5
6
7
Assuming that the set value = n, the counter divides the count source frequency by (n + 1).
When reading, the register indicates the counter value.
Operating mode select bits
These bits are invalid in timer mode.
This bit is invalid in timer mode; its value is undefined at reading.
Count source select bits
Bit name
16
16
16
, 50
, 52
, 54
16
16
16
16
7905 Group User’s Manual Rev.1.0
)
)
)
b1 b0
b7 b6
0 0 : Timer mode
0 0 : f
0 1 : f
1 0 : f
1 1 : f
” to “FFFF
Function
2
16
64
512
16
16
(b15)
” can be set.
to 5D
b7
16
)
Function
(b8)
b0
b7
b7 b6 b5 b4 b3 b2 b1 b0
X
X
Undefined
At reset
Undefined
At reset R/W
X
0
0
0
0
0
0
0
X
R/W
RW
RW
RW
RW
RW
RW
RW
RW
0 0
RO
b0
Reference
Reference
8-9
8-9
8-7