UTOPIA AC Electrical Specifications
shows the I
2
C bus timing.
SDA
202
205
SCL
206
209
210
211
203
207
204
208
Figure 69. I
2
C Bus Timing Diagram
12 UTOPIA AC Electrical Specifications
shows the AC electrical specifications for the UTOPIA interface.
Table 28. UTOPIA AC Electrical Specifications
Num
U1
Signal Characteristic
UtpClk rise/fall time (Internal clock option)
Duty cycle
Frequency
U1a
UtpClk rise/fall time (external clock option)
Duty cycle
Frequency
U2
U3
U4
U5
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)
Output
Input
Input
Output
Input
Direction
Output
Min
—
50
—
—
40
—
2
8
1
2
Max
3.5
50
50
3.5
60
50
16
—
—
16
Unit
ns
%
MHz
ns
%
MHz
ns
ns
ns
ns
MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8
Freescale Semiconductor
65
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
