M32C80 Datasheet, PDF (267/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
21. 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
(b5 - b3)
UFORM
Transfer Format
Select Bit
IRS
Transmit Interrupt
Source Select Bit
NOTE:
1. Set the GM1 and GM0 bits to "012" or "112" only.
Set to "0"
RW
0: LSB first
1: MSB first
RW
0: No data in the G0TB register
(TI=1)
1: Transmission is completed
RW
(TXEPT=1)
SI/O Communication Mode Register 1
b7 b6 b5 b4 b3 b2 b1 b0
00 0
Symbol
G1MR
Address
012D16
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
(b5 - b3)
Transfer Format
UFORM _{Select Bit}
IRS
Transmit Interrupt
Source Select Bit
NOTE:
1. Set the GM1 and GM0 bits to "012" or "112" only.
Set to "0"
RW
0: LSB first
1: MSB first
RW
0: No data in the G1TB register
(TI=1)
1: Transmission is completed
RW
(TXEPT=1)
Figure 21.4 G0MR and G1MR Registers
Rev. 1.00 Nov. 01, 2005 ^{Page 248} of 330
REJ09B0271-0100