AMD Elan SC520 - Figure 22-2 SSI Four-Pin Interface

Synchronous Serial Interface
22-4 Élan™SC520 Microcontroller User’s Manual
Figure 22-2 SSI Four-Pin Interface
Figure 22-3 SSI Simultaneous Transmit and Receive
Figure 22-4 SSI Three-Pin Interface
Figure 22-5 SSI Typical Half-Duplex Communication, Non-Inverted Phase and Clock Modes
SSI_CLK
SSI_DO
SSI_DI
PIOx
Data in
Data out
Enable
Clock in
Data in
Data out
Clock in
Enable
PIOx
Élan™SC520 Microcontroller
Four-Pin Slave Synchronous
Serial Interface
Four-Pin Slave Synchronous
Serial Interface
PIOx
SSI_CLK
SSI_DO
SSI_DI
SSI_CLK
SSI_DO
SSI_DI
PIOx
Clock in
Data in/out
Enable
Three-Pin Slave
Serial Interface
Élan™SC520 Microcontroller
Synchronous
PIOx
SSI_CLK
SSI_DO
SSI_DI