
MPC862/857T/857DSL PowerQUICC Family Hardware Specifications, Rev. 3
46
Freescale Semiconductor
CPM Electrical Characteristics
11 CPM Electrical Characteristics
This section provides the AC and DC electrical specifications for the communications processor module
(CPM) of the MPC862/857T/857DSL.
11.1
PIP/PIO AC Electrical Specifications
Figure 40. PIP Rx (Interlock Mode) Timing Diagram
Table 14. PIP/PIO Timing
Num
Characteristic
All Frequencies
Unit
Min
Max
21
Data-in setup time to STBI low
0
—
ns
22
Data-in hold time to STBI high
2.5 – t3 1
1
t3 = Specification 23
—clk
23
STBI pulse width
1.5
—
clk
24
STBO pulse width
1 clk – 5 ns
—
ns
25
Data-out setup time to STBO low
2
—
clk
26
Data-out hold time from STBO high
5
—
clk
27
STBI low to STBO low (Rx interlock)
—
2
clk
28
STBI low to STBO high (Tx interlock)
2
—
clk
29
Data-in setup time to clock high
15
—
ns
30
Data-in hold time from clock high
7.5
—
ns
31
Clock low to data-out valid (CPU writes data, control, or direction)
—
25
ns
DATA-IN
STBI
23
24
22
STBO
27
21