M32C86 Datasheet, PDF (314/505 Pages) Renesas Technology Corp – RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/86 Group (M32C/86, M32C/86T)
22. Intelligent I/O (Communication Function)
SI/O Communication Mode Register 0
b7 b6 b5 b4 b3 b2 b1 b0
00 0
Symbol
G0MR
Address
00ED16
After Reset
0016
Bit
Symbol
Bit Name
Function
RW
GMD0
GMD1
Communication Mode
Select Bit
b1 b0
RW
0 1 : Clock synchronous serial I/O
mode
1 1 : HDLC data processing mode⁽¹⁾ _RW
Internal/External Clock 0 : Internal clock
CKDIR _{Select Bit}
1 : External clock
RW
Reserved Bit
Set to "0"
RW
(b5 - b3)
UFORM
Transfer Format
Select Bit
0 : LSB first
1 : MSB first
RW
IRS ^{Transmit Interrupt}
Cause Select Bit
0 : No data in the G0TB register
(TI=1)
RW
1 : Transmission is completed
(TXEPT=1)
NOTES:
1. Do not set to any bit combinations except the above.
SI/O Communication Mode Register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
G1MR
Address
012D16
After Reset
0016
Bit
Symbol
GMD0
GMD1
CKDIR
Bit Name
Communication Mode
Select Bit
Internal/External Clock
Select Bit
Function
RW
b1 b0
0 0 : UART mode
RW
0 1 : Clock synchronous serial I/O
mode
1 0 : Special communication mode⁽¹⁾ RW
1 1 : HDLC data processing mode
0 : Internal clock
1 : External clock
RW
Stop Bit Length
0 : 1 stop bit
STPS _{Select Bit}
1 : 2 stop bits
RW
PRY ^{Parity Odd/Even}
0 : Odd parity
RW
Select Bit
1 : Even parity
Parity Enable
0 : Parity disabled
PRYE _{Select Bit}
1 : Parity enabled
RW
Transfer Format
0 : LSB first
UFORM _{Select Bit}
1 : MSB first
RW
NOTES:
IRS ^{Transmit Interrupt}
Cause Select Bit
0 : No data in the G1TB register
(TI=1)
RW
1 : Transmission is completed
(TXEPT=1)
1. In M32C/86, do not set the GMD1 and GMD0 bits to "102" except when using in motor vehicles.
Figure 22.22 G0MR and G1MR Registers
Rev. 1.00 Sep. 08, 2005 ^{Page 291} of 479
REJ09B0204-0100