NXP Semiconductors MPC5644A, Reference Manual, Page: 1330 / 1735

Deserial Serial Peripheral Interface (DSPI)
MPC5644A Microcontroller Reference Manual, Rev. 6
1330 Freescale Semiconductor
30.9.18 Power saving features
The DSPI supports two power-saving strategies:
• External Stop mode
• Module Disable mode—Clock gating of non-memory mapped logic
30.9.18.1 Stop mode (External Stop mode)
The DSPI supports the stop mode protocol. When a request is made to enter external stop mode, the DSPI
module acknowledges the request. If a serial transfer is in progress, the DSPI waits until it reaches the
frame boundary before it is ready to have its clocks shut off. While the clocks are shut off, the DSPI
memory-mapped logic is not accessible. The states of the interrupt and DMA request signals cannot be
changed while in External Stop mode.
Table 30-44. DSPI_D connectivity table
DSPI_D
input
Connected to:
DSPI_D
output
Connected to:
0 NC 0 Input 3 on IMUX for External IRQ[14]
1 NC 1 Input 3 on IMUX for External IRQ[15]
2 NC 2 NC
3 NC 3 NC
4 NC 4 Input 3 on IMUX for External IRQ[2]
5 NC 5 Input 3 on IMUX for External IRQ[3]
6 NC 6 Input 3 on IMUX for External IRQ[4]
7 NC 7 Input 3 on IMUX for External IRQ[5]
8 NC 8 Input 3 on IMUX for External IRQ[6]
9 NC 9 Input 3 on IMUX for External IRQ[7]
10 NC 10 Input 3 on IMUX for External IRQ[8]
11 NC 11 Input 3 on IMUX for External IRQ[9]
12 NC 12 Input 3 on IMUX for External IRQ[10]
13 NC 13 Input 3 on IMUX for External IRQ[11]
14 NC 14 Input 3 on IMUX for External IRQ[12]
15 NC 15 Input 3 on IMUX for External IRQ[13]
16–31 NC 16–31 NC