MPC862 datasheet(63/88 Pages) FREESCALE

部件名	MPC862

功能描述	PowerQUICC??Family Hardware Specifications

PDF	88 Pages

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制造商	FREESCALE [Freescale Semiconductor, Inc]

网页	http://www.freescale.com

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63 / 88 page

MPC862/857T/857DSL PowerQUICC™ Family Hardware Specifications, Rev. 3

Freescale Semiconductor

CPM Electrical Characteristics

11.9

SMC Transparent AC Electrical Specifications

Table 23 provides the SMC transparent timings as shown in Figure 65.

Figure 65. SMC Transparent Timing Diagram

Table 23. SMC Transparent Timing

Num

Characteristic

All Frequencies

Unit

Min

Max

150

SMCLK clock period 1

SyncCLK must be at least twice as fast as SMCLK.

100

—

151

SMCLK width low

—

151A

SMCLK width high

—

152

SMCLK rise/fall time

—

153

SMTXD active delay (from SMCLK falling edge)

154

SMRXD/SMSYNC setup time

—

155

RXD1/SMSYNC hold time

—

SMCLK

SMRXD

(Input)

152

150

SMTXD

(Output)

152

151

SMSYNC

151A

154

153

155

154

155

NOTE 1

NOTE:

This delay is equal to an integer number of character-length clocks.

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