System Interface Unit (SIU)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor 6-97
6.3.1.17 DSPI Input Select Register (SIU_DISR)
The SIU_DISR specifies the source of each DSPI data input, slave select, clock input, and trigger input to
allow serial and parallel chaining of the DSPI modules. For MPC5553, refer to Figure 6-133. For
MPC5554 refer to Figure 6-134.
18–19
ESEL6
External IRQ input select 6. Specifies the input for IRQ[6].
00 IRQ
[6] pin (for MPC5553, 0b00 is Reserved)
01 DSPI_B[6] serialized input (ETPUA[17] pin)
10 DSPI_C[7] serialized input (ETPUA[3] pin)
11 DSPI_D[8] serialized input (EMIOS[13] pin)
Note: IRQ
[6] functions on the MPC5554 only. It is not functional on the MPC5553.
20–21
ESEL5
External IRQ input select 5. Specifies the input for IRQ[5].
00 IRQ[5] pin
01 DSPI_B[5] serialized input (ETPUA[18] pin)
10 DSPI_C[6] serialized input (ETPUA[2] pin)
11 DSPI_D[7] serialized input (EMIOS[10] pin)
22–23
ESEL4
External IRQ input select 4. Specifies the input for IRQ[4].
00 IRQ
[4] pin
01 DSPI_B[4] serialized input (ETPUA[19] pin)
10 DSPI_C[5] serialized input (ETPUA[1] pin)
11 DSPI_D[6] serialized input (EMIOS[11] pin)
24–25
ESEL3
External IRQ input select 3. Specifies the input for IRQ[3].
00 IRQ[3] pin
01 DSPI_B[3] serialized input (ETPUA[20] pin)
10 DSPI_C[4] serialized input (ETPUA[0] pin)
11 DSPI_D[5] serialized input (ETPUA[16] pin)
26–27
ESEL2
External IRQ input select 2. Specifies the input for IRQ[2].
00 IRQ[2] pin
01 DSPI_B[2] serialized input (ETPUA[21] pin)
10 DSPI_C[3] serialized input (ETPUA[15] pin)
11 DSPI_D[4] serialized input (ETPUA[17] pin)
28–29
ESEL1
External IRQ input select 1. Specifies the input for IRQ[1].
00 IRQ
[1] pin
01 DSPI_B[1] serialized input (EMIOS[10] pin)
10 DSPI_C[2] serialized input (ETPUA[14] pin)
11 EMIOS[15] pin
30–31
ESEL0
External IRQ input select 0. Specifies the input for IRQ[0].
00 IRQ[0] pin
01 DSPI_B[0] serialized input (EMIOS[11] pin)
10 DSPI_C[1] serialized input (ETPUA[5] pin)
11 EMIOS[14] pin
Table 6-49. SIU_EIISR Field Descriptions
Register Bit Range
Field Name
Description
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