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M306V5ME-XXXSP Datasheet, PDF (104/263 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER | |||
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MITSUBISHI MICROCOMPUTERS
M306V5ME-XXXSP
M306V5EESP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
(1) Polarity select function
As shown in Figure 2.11.18, the CLK polarity select bit (bit 6 at addresses 03A416, 037C16) allows
selection of the polarity of the transfer clock.
⢠When CLK polarity select bit = â0â
CLKi
TXDi
D0 D1 D2 D3 D4 D5 D6 D7
RXDi
D0 D1 D2 D3 D4 D5 D6 D7
⢠When CLK polarity select bit = â1â
CLKi
TXDi
D0 D1 D2 D3 D4 D5 D6 D7
Note 1: The CLK pin level when not
transferring data is âHâ.
Note 2: The CLK pin level when not
transferring data is âLâ.
Figure 2.11.18 Polarity of transfer clock
(2) LSB first/MSB first select function
As shown in Figure 2.11.19, when the transfer format select bit (bit 7 at addresses 03A416, 037C16) =
â0â, the transfer format is âLSB firstâ; when the bit = â1â, the transfer format is âMSB firstâ.
⢠When transfer format select bit = â0â
CLKi
TXDi
D0 D1 D2 D3 D4 D5 D6 D7
RXDi
D0 D1 D2 D3 D4 D5 D6 D7
LSB first
⢠When transfer format select bit = â1â
CLKi
TXDi
RXDi
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
MSB first
Note: This applies when the CLK polarity select bit = â0â.
Figure 2.11.19 Transfer format
Rev. 1.0
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