mpc855t Freescale Semiconductor, Inc, mpc855t Datasheet - Page 60

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mpc855t

Manufacturer Part Number
mpc855t
Description
Mpc855t Powerquicc Integrated Communications Processor
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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CPM Electrical Characteristics
11.9
Table 23
1
60
151A
Num
150
151
152
153
154
155
SYNCCLK must be at least twice as fast as SMCLK.
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
provides the SMC transparent timings as shown in
SMC Transparent AC Electrical Specifications
SMSYNC
Note:
(Output)
SMRXD
SMTXD
SMCLK
(Input)
1.
This delay is equal to an integer number of character-length clocks.
152
MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8
1
Figure 64. SMC Transparent Timing Diagram
154
154
Characteristic
152
155
Table 23. SMC Transparent Timing
155
Note 1
151
150
151A
Figure
153
64.
Min
100
50
50
10
20
All Frequencies
5
Freescale Semiconductor
Max
15
50
Unit
ns
ns
ns
ns
ns
ns
ns

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