NXP Semiconductors MPC5644A, Reference Manual, Page: 1323 / 1735

Deserial Serial Peripheral Interface (DSPI)
MPC5644A Microcontroller Reference Manual, Rev. 6
Freescale Semiconductor 1323
30.9.17 DSPI connections to eTPU_A, eMIOS and SIU
The three DSPI modules connect to the input and output channels of the eTPUs and the eMIOS. Some of
the DSPI outputs connect to the External Interrupt Input Multiplexing sub-block in the SIU. See
Section 16.7.3.1, External interrupts ” and Section 16.6.19, External IRQ Input Select Register
(SIU_EIISR) ” for details on how the DSPI deserialized outputs can be used to trigger external interrupt
requests.
30.9.17.1 DSPI_B connectivity
The DSPI_B connects to the eMIOS, eTPU_A and SIU as shown in Figure 30-56 .
Figure 30-56. DSPI_B connectivity
Table 30-42 lists the DSPI_B connections.
Table 30-41. LVDS pads voltage swing
SIU_PCRx
Current flowing in the driver
Differential voltage across
pad_p and pad_n
SRC[0] SRC[1]
0 0 normal default
0 1 increased increased
1 0 decreased decreased
1 1 normal same as default
DSPI_B
OUT 14
OUT 15
eMIOS
CH 13
CH 12
eTPU_A
eMIOS
CH [16:23]
CH [24:29]
CH [30:31]
CH [15:12]
eTPU_A
CH 29
CH 24
CH [8:11]
IN [3:0]
IN [10:4]
IN [7:0]
IN [13:8]
IN [15:14]
IN [19:16]
OUT 8
OUT 13
OUT 0
OUT 15
CH [23]
IN [11]
IN [15:12]
CH [12:15]
IN1 IRQ[0]
SIU/IMUX
IN1 IRQ[15]
CH [11:0]
IN [31:20]
IN [16]
CH [8:15]
IN [24:17]
IN [31:25]
CH [0:6]
CH [0:6]
CH [23]