NXP Semiconductors MPC5606S - Signal Names and Descriptions

Deserial Serial Peripheral Interface (DSPI)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 289
11.6.2 Signal names and descriptions
11.6.2.1 Peripheral Chip Select / Slave Select (CS_0)
In Master mode, the CS_0 signal is a peripheral chip select output that selects the slave device to which
the current transmission is intended.
In Slave mode, the CS_0 signal is a slave select input signal that allows an SPI master to select the DSPI
as the target for transmission. CS_0 must be configured as input and pulled high. If the internal pullup is
being used, then the appropriate bits in the relevant SIU_PCR must be set (SIU_PCR [WPE = 1],
[WPS = 1]).
Set the IBE and OBE bits in the SIU_PCR for all CS_0 pins when the DSPI chip select or slave select
primary function is selected for that pin. When the pin is used for DSPI Master mode as a chip select
output, set the OBE bit. When the pin is used in DSPI Slave mode as a slave select input, set the IBE bit.
11.6.2.2 Peripheral Chip Selects 1–2 (CS1:2)
CS1:2 are peripheral chip select output signals in Master mode. In Slave mode these signals are not used.
11.6.2.3 Serial Input (SIN_x)
SIN_x is a serial data input signal.
11.6.2.4 Serial Output (SOUT_x)
SOUT_x is a serial data output signal.
11.6.2.5 Serial Clock (SCK_x)
SCK_x is a serial communication clock signal. In Master mode, the DSPI generates the SCK. In Slave
mode, SCK_x is an input from an external bus master.
Table 11-1. Signal properties
Name I/O Type
Function
Master mode Slave mode
CS0_x Output / input Peripheral chip select 0 Slave select
CS1:2_x Output Peripheral chip select 1–2 Unused
1
1
The SIU allows you to select alternate pin functions for the device.
SIN_x Input Serial data in Serial data in
SOUT_x Output Serial data out Serial data out
SCK_x Output / input Serial clock (output) Serial clock (input)