ADSP-21368 SHARC Processor Hardware Reference 4-75
Digital Audio/Digital Peripheral Interfaces
Listing 4-3. TWI Slave Transmit Mode
SRU(LOW,DPI_PB11_I) /* Since TWI output is an open-drain
output the TWI pin is connected
to logic level low */
SRU(TWI_DATA_PBEN_O,DPI_PBEN11_I) /* TWI data output connected
to DPI pin 11 input */
SRU(DPI_PB11_O,TWI_DATA_I) /* DPI pin 11 output connected to
TWI data input */
SRU(DPI_PB12_O, TWI_CLK_I) /* clock signal from DPI pin 12 is
connected to the TWI slave
clock input */
SRU(LOW,DPI_PBEN12_I) /* Disables DPI pin 12 as input as
the clock is not generated by
the slave
*/
Listing 4-4. TWI Slave Receive Mode
SRU(DPI_PB11_O,TWI_DATA_I /* DPI pin 11 output connected to
TWI data input */
SRU(LOW,DPI_PB11_I) ) /* Since TWI output is an open
drain output the TWI pin is
connected to logic level low */
SRU2(TWI_DATA_PBEN_O,DPI_PBEN11_I) /* TWI data output
connected to DPI pin
11 input */
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