MPC875 datasheet(47/84 Pages) FREESCALE

部件名	MPC875

功能描述	Hardware Specifications

PDF	84 Pages

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制造商	FREESCALE [Freescale Semiconductor, Inc]

网页	http://www.freescale.com

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MPC875/MPC870 Hardware Specifications, Rev. 3.0

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Freescale Semiconductor

CPM Electrical Characteristics

13.2 IDMA Controller AC Electrical Specifications

Table 18 provides the IDMA controller timings as shown in Figure 41 to Figure 44.

Figure 41. IDMA External Requests Timing Diagram

Table 18. IDMA Controller Timing

Num

Characteristic

All

Frequencies

Unit

Min

Max

DREQ setup time to clock high

—

DREQ hold time from clock high 1

1 Applies to high-to-low mode (EDM=1)

TBD

—

SDACK assertion delay from clock high

—

SDACK negation delay from clock low

—

SDACK negation delay from TA low

—

SDACK negation delay from clock high

—

TA assertion to falling edge of the clock setup time (applies to external TA)7

—

DREQ

(Input)

CLKO

(Output)

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