Panasonic MN103001G/F01K User Manual

Page 335

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Serial Interface

13-33

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Clock synchronous serial interface timing

• One-byte transfer with 8-bit data length and parity off

Fig. 13-3-3 Timing Chart (13)

• Two-byte transfer with 7-bit data length and parity on

Fig. 13-3-4 Timing Chart (14)

When transmission is enabled, transmission starts when data is written to SCnTXB.
Continuous transmission is possible by writing data to SCnTXB again while transmission is in progress.

During a 7-bit transfer, the MSB (bit 7) is ignored.

The SCnTXF flag is set to "1" when data is written to SCnTXB, and is set to "0" at the end of transmission.
The SCnTBF flag is set to "1" when data is written to SCnTXB, and is set to "0" at the start of transmission.

bp1

bp2

bp3

bp4

bp5

bp6

bp7

bp0

SBO pin

SBT pin

Data write

SCnTXF flag

SCnTBF flag

Interrupt request
(when set to “transmission buffer
empty”)

Interrupt request
(when set to “transmission end”)

bp1 bp2 bp3 bp4 bp5 bp6

PTY

bp0