MPC857T Freescale Semiconductor, Inc, MPC857T Datasheet - Page 63

• Manufacturer Part Number: MPC857T
• Description: Mpc857t Powerquicc Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

11.9
Table 23
Freescale Semiconductor
1
Num
151A
150
151
152
153
154
155
SyncCLK must be at least twice as fast as SMCLK.
provides the SMC transparent timings as shown in
SMC Transparent AC Electrical Specifications
SMSYNC
(Output)
SMCLK clock period
SMCLK width low
SMCLK width high
SMCLK rise/fall time
SMTXD active delay (from SMCLK falling edge)
SMRXD/SMSYNC setup time
RXD1/SMSYNC hold time
SMRXD
SMTXD
SMCLK
(Input)
MPC862/857T/857DSL PowerQUICC™ Family Hardware Specifications, Rev. 3
NOTE:
1.
152
This delay is equal to an integer number of character-length clocks.
1
Figure 65. SMC Transparent Timing Diagram
154
154
152
155
Table 23. SMC Transparent Timing
Characteristic
155
NOTE 1
151
150
151A
Figure
153
65.
All Frequencies
Min
100
50
50
10
20
—
5
CPM Electrical Characteristics
Max
15
50
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
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