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V1.2.2
CMS32L051 User Manual |Chapter 12 Universal Serial Communication Unit
www.mcu.com.cn 391 / 703
(4) Process flow (continuous send mode)
Figure 12-78 Timing diagram of slave transmit (continuous transmit mode) (type 1: DAPmn=0, CKPmn=0).
SCLKp pin
SDOp pin
INTSSPIp
shift register mn
TSFmn
SDRmn
SEmn
STmn
SSmn
SSp pin
BFFmn
MDmn0
transmit data1
transmit data1
transmit data2
transmit data2
transmit data3
transmit data3
transmit data transmit data transmit data
shift operation shift operation
shift operation
Note
Note If the BFFmn bit of the serial status register mn (SSRmn) is 1 (when valid data is saved in the serial data register
mn (SDRmn)) is given The SDRmn register writes the transmitted data and overrides the transmitted data.
Notice The MDmn0 bit of the serial mode register mn (SMRmn) can be overridden even during operation. However, it
must be overridden before the last bit can be transferred.
Remark m: Unit number (m=0) n: Channel number (n=0) p: SSPI number (p=00)

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