Cmsemicon CMS32L051 - 12.6 Operation of clock-synchronous serial communication with slave selection input function

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CMS32L051 User Manual |Chapter 12 Universal Serial Communication Unit
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12.6 Operation of clock-synchronous serial communication with slave selection input
function
Channel 0 of SCI0 is the channel that supports clock-synchronous serial communication with the slave
select input function.
[Transmit and receive data]
 7-bit or 8-bit data length
 Phase control of sending and receiving data
• MSB/LSB preferred choice
 Level settings for sending and receiving data
[Clock control].
 Phase control of input/output clocks
 Sets the transfer period generated by the prescaler and the in-channel counter.
 Maximum transfer rate
Note
for slave communication: Max.f
MCK
/6
[Interrupt function].
 End of transfer interrupt, buffer empty interrupt
[Error detection flag].
 Overflow error
Note it must be used within the scope of the SCLK Cycle Time (t
KCY
) characteristics. Please refer to the
data sheet for details.
The slave select input function operates in three types of communication:
 Slave transmission (see 12.6.1).
 Slave reception (see 12.6.2).
 Slave transmission and reception (see 12.6.3).