M306H7MG-XXXFP Datasheet, PDF (138/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
10. SERIAL I/O
10.8 SI/O3 and SI/O4
SI/O3 and SI/O4 are exclusive clock-synchronous serial I/Os.
Figure 10.34 shows the block diagram of SI/O3 and SI/O4, and Figure 10.35 shows the SI/O3 and SI/O4- related
registers.
Table 10.19 shows the specifications of SI/O3 and SI/O4.
Main clock
CLKi
SOUTi
f1SIO
f2SIO PCLK1=0
1/2
PCLK1=1
1/8
1/4
SMi4
CLK
polarity
reversing
circuit
SMi3
SMi6
Clock source select
SMi1 to SMi0
002
Data bus
f8SIO
012
f32SIO
102
Synchronous
circuit
SMi6
1/2
1/(n+1)
SiBRG register
SI/O counter i
SI/Oi
interrupt request
SMi2
SMi3
SMi5 LSB
MSB
SINi
SiTRR register
8
Note: i = 3, 4.
n = A value set in the SiBRG register.
Figure 10.34 SI/O3 and SI/O4 Block Diagram
Rev.2.10 Oct 25, 2006 Page 138 of 326
REJ03B0152-0210