CMS32L051 User Manual |Chapter 12 Universal Serial Communication Unit
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(4) Process flow (continuous send mode)
Figure 12-53 Timing diagram of slave transmit (continuous transmit mode) (type 1: DAPmn=0, CKPmn=0)
SCLKp pin
INTSSPIp
shift register mn
TSFmn
SDRmn
SEmn
STmn
SSmn
BFFmn
MDmn0
SDOP pin
transmit data1
transmit data2 transmit data3
transmit data1
transmit data2 transmit data3
shift operation
shift operation
shift operation
transmit data transmit data transmit data
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, 1) n: Channel number (n=0~3)p: SSPI number (p=00, 01, 10, 11, 20, 21)
mn=00~03, 10~11.
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