Si/O3 And Si/O4 - Renesas M16C/62P Series Hardware Manual

M16C/62P Group (M16C/62P, M16C/62PT)
17.2

SI/O3 and SI/O4

Note
The M16C/62P (80-pin version) and M16C/62PT (80-pin version) do not include SIN3 pin of SI/O3. SI/O3
is only for transmission. Reception is impossible.
SI/O3 and SI/O4 are exclusive clock-synchronous serial I/Os.
Figure 17.38 shows the SI/O3 and SI/O4 Block Diagram, and Figure 17.39 to Figure 17.40 show the SI/O3 and SI/O4-
related registers.
Table 17.20 shows the SI/O3 and SI/O4 Specifications.
.
Main clock,
f1SIO
PLL clock,
or on-chip oscillator clock
CLK
i
SOUTi
SINi
Figure 17.38 SI/O3 and SI/O4 Block Diagram
Rev.2.41 Jan 10, 2006
REJ09B0185-0241
http://www.xinpian.net
f2SIO PCLK1=0
1/2 1/2
PCLK1=1
1/8
1/4
SMi4 SMi3
SMi6
CLK
polarity
reversing
circuit
SMi2
SMi3
SMi5 LSB
NOTES :
1. i = 3, 4.
n = A value set in the SiBRG register.
Page 227 of 390
提供单片机解密、IC解密、芯片解密业务
Clock source select
SMi1 to SMi0
00b
01b
f8SIO
10b
f32SIO
Synchronous
1/2
circuit
SiBRG register
SMi6
SI/O counter i
MSB
SiTRR register
17. Serial Interface
Data bus
1/(n+1)
SI/Oi
interrupt request
8
010-62245566 13810019655