Communication Processor Module
MOTOROLA MPC823e REFERENCE MANUAL 16-147
SERIAL
I/F
COMMUNICATION
16
PROCESSOR MODULE
Figure 16-60. IDL Bus Signals
Note: Previous versions of Motorola IDL-defined bit functions, called auxiliary (A) and
maintenance (M), were eliminated from the IDL definition when it was concluded
that the IDL control channel would be out-of-band. They were defined as a
subset of the Motorola SPI format called serial control port (SCP). If you prefer
to implement the A and M bit functions as originally defined, you can program the
time-slot assigner to access these bits and route them transparently to a serial
communication controller or serial management controller. To perform the
out-of-band signaling required, use the MPC823e serial peripheral interface.
L1xCLK
L1xSYNC
L1RXDx
NOTE:
L1RQ
x
AND L1GR
x
ARE NOT SHOWN.
B1
D1 B2 D2
L1
x
CLK
L1
x
SYNC
L1RXD
x
B1
B2
10-BIT IDL
8-BIT IDL
D1 D2
L1TXD
x
L1TXD
x
B1
D1 B2 D2
B1
B2
D1 D2
(CLOCK IS NOT TO SCALE)
(CLOCK IS NOT TO SCALE)
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