mpc855t Freescale Semiconductor, Inc, mpc855t Datasheet - Page 65

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

Figure 69
12 UTOPIA AC Electrical Specifications
Table 28
Freescale Semiconductor
Num
U1a
U1
U2
U3
U4
U5
SDA
SCL
UtpClk rise/fall time (Internal clock option)
Duty cycle
Frequency
UtpClk rise/fall time (external clock option)
Duty cycle
Frequency
RxEnb and TxEnb active delay
UTPB, SOC, Rxclav and Txclav setup time
UTPB, SOC, Rxclav and Txclav hold time
UTPB, SOC active delay (and PHREQ and PHSEL active delay in
MPHY mode)
shows the AC electrical specifications for the UTOPIA interface.
shows the I
205
202
2
C bus timing.
206
MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8
Signal Characteristic
Table 28. UTOPIA AC Electrical Specifications
203
Figure 69. I
207
2
209
C Bus Timing Diagram
204
210
Direction
Output
Output
Output
Input
Input
Input
UTOPIA AC Electrical Specifications
208
Min
50
40
—
—
—
—
2
8
1
2
211
Max
3.5
3.5
50
50
60
50
16
16
—
—
MHz
MHz
Unit
ns
ns
ns
ns
ns
ns
%
%
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