APPENDIX
Appendix 2. Control registers
b7 b6 b5 b4 b3 b2 b1 b0
At reset R/W
Timer A clock division select register (Address 4516)
Function
Reference
Bit
0
Bit name
7-6
Timer A clock division select bits
See Table 7.2.3.
0
0
0
RW
RW
–
1
The value is “0” at reading.
7 to 2
Timer A0 register (Addresses 4716, 4616)
Timer A1 register (Addresses 4916, 4816)
Timer A2 register (Addresses 4B16, 4A16)
Timer A3 register (Addresses 4D16, 4C16)
Timer A4 register (Addresses 4F16, 4E16)
Timer A5 register (Addresses C716, C616)
Timer A6 register (Addresses C916, C816)
Timer A7 register (Addresses CB16, CA16)
Timer A8 register (Addresses CD16, CC16)
Timer A9 register (Addresses CF16, CE16)
(b8)
b0
(b15)
b7
b7
b0
Bit
Function
At reset R/W
Reference
7-5
15 to 0 These bits have different functions according to the operating mode.
Undefined RW
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
At reset R/W
Timer Ai mode register (i = 0 to 4) (Addresses 5616 to 5A16)
Timer Ai mode register (i = 5 to 9) (Addresses D616 to DA16)
Bit
0
Bit name
Operating mode select bits
(Note)
Function
Reference
b1 b0
7-8
0
RW
0 0 : Timer mode
0 1 : Event counter mode
1 0 : One-shot pulse mode
1
0
RW
1 1 : Pulse width modulation (PWM) mode.
These bits have different functions according to the operating mode.
2
3
4
5
6
7
0
0
0
0
0
0
RW
RW
RW
RW
RW
RW
Note: For timers A3 and A5 to A8, fix these bits to “00”; do not select “012,” “102,” and “112.”
7906 Group User’s Manual Rev.2.0
20-20
RENESAS [ RENESAS TECHNOLOGY CORP ]
