R01UH0136EJ0210 Rev.2.10
Page 525 of 800
Jul 31, 2012
M16C/64A Group
24. Serial Interface SI/O3 and SI/O4
24.3.3
LSB First or MSB First Selection
Bit order is selected by setting the SMi5 bit in the SiC register (i = 3, 4). Figure 24.3 shows Bit Order.
Figure 24.3
Bit Order
(1) The SMi5 bit in the SiC register is set to 0 (LSB first)
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
TXDi
RXDi
CLKi
(2) The SMi5 bit in the SiC register is set to 1 (MSB first)
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
D7
TXDi
RXDi
CLKi
The above diagram assumes the following:
y
The SMi4 bit in the SiC register is set to 0 (transmit data is output at falling edge of transmit/receive
clock and receive data is input at rising edge)
i = 3, 4
Содержание M16C/60 Series
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