MPC875 datasheet(50/84 Pages) FREESCALE

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MPC875/MPC870 Hardware Specifications, Rev. 3.0

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Freescale Semiconductor

CPM Electrical Characteristics

13.4 Timer AC Electrical Specifications

Table 20 provides the general-purpose timer timings as shown in Figure 46.

Figure 46. CPM General-Purpose Timers Timing Diagram

13.5 Serial Interface AC Electrical Specifications

Table 21 provides the serial interface (SI) timings as shown in Figure 47 to Figure 51.

Table 20. Timer Timing

Num

Characteristic

All

Frequencies

Unit

Min

Max

TIN/TGATE rise and fall time

—

TIN/TGATE low time

—

clk

TIN/TGATE high time

—

clk

TIN/TGATE cycle time

—

clk

CLKO low to TOUT valid

Table 21. SI Timing

Num

Characteristic

All Frequencies

Unit

Min

Max

L1RCLKB, L1TCLKB frequency (DSC = 0) 1, 2

—

SYNCCLK

/2.5

MHz

L1RCLKB, L1TCLKB width low (DSC = 0) 2

P + 10

—

71a

L1RCLKB, L1TCLKB width high (DSC = 0) 3

P + 10

—

L1TXDB, L1ST1 and L1ST2, L1RQ, L1CLKO rise/fall time

—

15.00

L1RSYNCB, L1TSYNCB valid to L1CLKB edge (SYNC setup time)

20.00

—

CLKO

TIN/TGATE

(Input)

TOUT

(Output)

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