MPC855T datasheet(49/80 Pages) FREESCALE

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MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8

Freescale Semiconductor

CPM Electrical Characteristics

Figure 50. CPM General-Purpose Timers Timing Diagram

11.6

Serial Interface AC Electrical Specifications

Table 19 provides the serial interface timings as shown in Figure 51 through Figure 55.

Table 19. SI Timing

Num

Characteristic

All Frequencies

Unit

Min

Max

L1RCLK, L1TCLK frequency (DSC = 0)1, 2

—

SYNCCLK/2.5

MHz

L1RCLK, L1TCLK width low (DSC = 0)2

P + 10

—

71a

L1RCLK, L1TCLK width high (DSC = 0)3

P + 10

—

L1TXD, L1ST(1–4), L1RQ, L1CLKO rise/fall time

—

15.00

L1RSYNC, L1TSYNC valid to L1CLK edge (SYNC setup time)

20.00

—

L1CLK edge to L1RSYNC, L1TSYNC, invalid (SYNC hold time)

35.00

—

L1RSYNC, L1TSYNC rise/fall time

—

15.00

L1RXD valid to L1CLK edge (L1RXD setup time)

17.00

—

L1CLK edge to L1RXD invalid (L1RXD hold time)

13.00

—

L1CLK edge to L1ST(1–4) valid 4

10.00

45.00

78A

L1SYNC valid to L1ST(1–4) valid

10.00

45.00

L1CLK edge to L1ST(1–4) invalid

10.00

45.00

L1CLK edge to L1TXD valid

10.00

55.00

80A

L1TSYNC valid to L1TXD valid 4

10.00

55.00

L1CLK edge to L1TXD high impedance

0.00

42.00

L1RCLK, L1TCLK frequency (DSC =1 )

—

16.00 or

SYNCCLK/2

MHz

L1RCLK, L1TCLK width low (DSC = 1)

P + 10

—

83a

L1RCLK, L1TCLK width high (DSC = 1)3

P + 10

—

CLKO

TIN/TGATE

(Input)

TOUT

(Output)

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