M32C80 Datasheet, PDF (265/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
21. Intelligent I/O (Communication Function)
21.1 Communication Unit 0 and 1 Communication Function
In the intelligent I/O communication units, 8-bit clock synchronous serial I/O or HDLC data processing is
available.
Figures 21.2 to 21.11 show registers associated with the communication function.
Receive Input Register i (i=0,1)
b7
b0
Symbol
G0RI, G1RI
Address
00EC16, 012C16
Function
Set data to be transmitted to a received
data generation circuit
After Reset
Indeterminate
Setting Range RW
0016 to FF16
WO
Transmit Output Register i (i=0,1)
b7
b0
Symbol
G0TO, G1TO
Address
00EE16, 012E16
After Reset
Indeterminate
Function
RW
Can read a data transmitted by a transmitted data generation circuit
RO
Figure 21.2 G0RI and G1RI Registers, G0TO and G1TO Registers
Rev. 1.00 Nov. 01, 2005 ^{Page 246} of 330
REJ09B0271-0100