MPC875 Freescale Semiconductor, Inc, MPC875 Datasheet - Page 51

• Manufacturer Part Number: MPC875
• Description: Mpc875 Powerquicc Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

13.5
Table 21
Freescale Semiconductor
Num
71a
78A
80A
70
71
72
73
74
75
76
77
78
79
80
81
82
83
TIN/TGATE
(Output)
L1RCLKB, L1TCLKB frequency (DSC = 0)
L1RCLKB, L1TCLKB width low (DSC = 0)
L1RCLKB, L1TCLKB width high (DSC = 0)
L1TXDB, L1ST1 and L1ST2, L1RQ, L1CLKO rise/fall time
L1RSYNCB, L1TSYNCB valid to L1CLKB edge (SYNC setup time)
L1RSYNCB, L1TSYNCB rise/fall time
L1RXDB valid to L1CLKB edge (L1RXDB setup time)
L1CLKB edge to L1RXDB invalid (L1RXDB hold time)
L1CLKB edge to L1ST1 and L1ST2 valid
L1SYNCB valid to L1ST1 and L1ST2 valid
L1CLKB edge to L1ST1 and L1ST2 invalid
L1CLKB edge to L1TXDB valid
L1TSYNCB valid to L1TXDB valid
L1CLKB edge to L1TXDB high impedance
L1RCLKB, L1TCLKB frequency (DSC = 1)
L1RCLKB, L1TCLKB width low (DSC = 1)
L1CLKB edge to L1RSYNCB, L1TSYNCB, invalid (SYNC hold time)
(Input)
CLKO
TOUT
provides the serial interface (SI) timings as shown in
Serial Interface AC Electrical Specifications
MPC875/MPC870 PowerQUICC™ Hardware Specifications, Rev. 4
Figure 47. CPM General-Purpose Timers Timing Diagram
61
Characteristic
4
61
4
2
Table 21. SI Timing
1, 2
3
60
65
63
Figure 48
64
P + 10
P + 10
P + 10
20.00
35.00
17.00
13.00
10.00
10.00
10.00
10.00
10.00
0.00
through
Min
—
—
—
—
All Frequencies
62
CPM Electrical Characteristics
Figure
SYNCCLK/2.5
SYNCCLK/2
16.00 or
15.00
15.00
45.00
45.00
45.00
55.00
55.00
42.00
Max
—
—
—
—
—
—
—
52.
MHz
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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