m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 477

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

APPENDIX
Appendix 2. Control registers
20-46
Note: Valid when the CTS/RTS enable bit (bit 4 at addresses 34
Position-data-retain function control register (Address AA
Note: This register is valid only in the three-phase mode.
Serial I/O pin control register (Address AC
7 to 4
7, 6
Bit
Bit
0
1
2
3
0
1
2
3
4
5
W-phase position data retain bit
V-phase position data retain bit
U-phase position data retain bit
Retain-trigger polarity select
bit
Nothing is assigned.
CTS
(Note)
CTS
(Note)
TxD
TxD
CTS
(Note)
TxD
The value is “00” at reading.
0
1
2
0
1
2
/P1
/P1
/P8
/RTS
/RTS
/RTS
3
7
3
switch bit
switch bit
switch bit
0
1
2
Bit name
Bit name
separate select bit
separate select bit
separate select bit
7905 Group User’s Manual Rev.1.0
0 : CTS
1 : CTS
0 : Functions as TxD
1 : Functions as P8
0 : Functions as TxD
1 : Functions as P1
0 : Functions as TxD
1 : Functions as P1
Input level at pin IDV is read out.
0 : “L” level
1 : “H” level
Input level at pin IDU is read out.
0 : “L” level
1 : “H” level
0 : Falling edge of positive phase
1 : Rising edge of positive phase
Input level at pin IDW is read out.
0 : “L” level
1 : “H” level
0 : CTS
1 : CTS
0 : CTS
1 : CTS
16
)
2
2
0
0
1
1
/RTS
/RTS
/RTS
/RTS
/RTS
/RTS
16
2
2
0
0
1
1
, 3C
are used together.
are separated.
are used together.
are separated.
are used together.
are separated.
16
3
7
3
, and B4
16
.
.
.
2
1
0
)
.
.
.
Function
Function
16
) is “0.”
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
At reset
At reset
Undefined
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
—
—
Reference
Reference
10-12
11-17
11-18