M16C62P_06 Datasheet, PDF (243/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
17. Serial Interface
SI/Oi Control Register (i=3, 4) ⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
Address
After Reset
S3C
0362h
01000000b
S4C
0366h
01000000b
Bit Symbol
Bit Name
Function
RW
Internal Synchronous
b1 b0
SMi0 ^{Clock Select Bit(6)}
0 0 : Selecting f1SIO or f2SIO ⁽⁵⁾
RW
0 1 : Selecting f8SIO
SMi1
1 0 : Selecting f32SIO
1 1 : Do not set to this value
RW
SOUTi Output Disable Bit ⁽⁴⁾ 0 : SOUTi output
SMi2
1 : SOUTi output disable (High-Impedance)
RW
S I/Oi Port Select Bit
0 : Input/output port
SMi3
1 : SOUTi output, CLKi function
RW
SMi4
CLK Polarity Select Bit
0 : Transmit data is output at falling edge of transfer
clock and receive data is input at rising edge
1 : Transmit data is output at rising edge of transfer ^RW
clock and receive data is input at falling edge
Transfer Direction Select Bit 0 : LSB first
SMi5
1 : MSB first
RW
Synchronous Clock
0 : External clock ⁽²⁾
SMi6 _{Select Bit}
1 : Internal clock ⁽³⁾
RW
SOUTi Initial Value Set Bit
Effective w hen SMi3 = 0
SMi7
0 : “L” output
RW
1 : “H” output
NOTES :
1. Make sure this register is w ritten to by the next instruction after setting the PRC2 bit in the PRCR register to “1” (w rite
enable).
2. Set the SMi3 bit to “1” and the corresponding port direction bit to “0” (input mode).
3. Set the SMi3 bit to “1” (SOUTi output, CLKi function).
4. When the SMi2 bit is set to “1,” the target pin goes to a high-impedance state regardless of w hich function of the pin is
being used.
5. Selected by PCLK1 bit in the PCLKR register.
6. When changing the SMi1 to SMi0 bits, set the SiBRG register.
Figure 17.39 SiC Register
Rev.2.41 Jan 10, 2006 Page 228 of 390
REJ09B0185-0241