m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 128

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

Fig. 7.4.5 Structures of up-down registers 0 and 1
Note: Use the MOVM (MOVMB) or STA(STAB, STAD) instruction for writing to bits 5 to 7.
Up-down register 0 (Address 44
Note: Use the MOVM (MOVMB) or STA(STAB, STAD) instruction for writing to bits 5 to 7.
Up-down register 1 (Address C4
Bit
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Timer A5 up-down bit
Timer A6 up-down bit
Timer A7 up-down bit
Timer A8 up-down bit
Timer A9 up-down bit
Timer A7 two-phase pulse signal
processing select bit
Timer A8 two-phase pulse signal
processing select bit
Timer A9 two-phase pulse signal
processing select bit
Timer A0 up-down bit
Timer A1 up-down bit
Timer A2 up-down bit
Timer A3 up-down bit
Timer A4 up-down bit
Timer A2 two-phase pulse signal
processing select bit
Timer A3 two-phase pulse signal
processing select bit
Timer A4 two-phase pulse signal
processing select bit
Bit name
Bit name
16
16
)
)
7905 Group User’s Manual Rev.1.0
0 : Countdown
1 : Countup
This function is valid when the contents of the up-
down register is selected as the up-down switching
factor.
0 : Two-phase pulse signal processing function disabled
1 : Two-phase pulse signal processing function enabled
When not using the two-phase pulse signal processing
function, clear the bit to “0.”
The value is “0” at reading.
0 : Countdown
1 : Countup
This function is valid when the contents of the up-
down register is selected as the up-down switching
factor.
0 : Two-phase pulse signal processing function disabled
1 : Two-phase pulse signal processing function enabled
When not using the two-phase pulse signal processing
function, clear the bit to “0.”
The value is “0” at reading.
Function
Function
7.4 Event counter mode
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
At reset
At reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TIMER A
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
R/W
WO
WO
WO
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
WO
WO
WO
7-25