MPC885ZP66 datasheet(20/92 Pages) FREESCALE

20 / 92 page

MPC885/MPC880 Hardware Specifications, Rev. 3

Freescale Semiconductor

Bus Signal Timing

B29f

WE(0:3) negated to D(0:31) High-Z GPCM

write access, TRLX = 0, CSNT = 1,

EBDF = 1 (MIN = 0.375

× B1 – 6.30)

5.00

—

3.00

—

0.00

—

0.00

—

B29g

CS negated to D(0:31) High-Z GPCM write

access, TRLX = 0, CSNT = 1 ACS = 10 or

ACS = 11, EBDF = 1

(MIN = 0.375

× B1–6.30)

5.00

—

3.00

—

0.00

—

0.00

—

B29h

WE(0:3) negated to D(0:31) High-Z GPCM

write access, TRLX = 1, CSNT = 1,

EBDF = 1 (MIN = 0.375

× B1 – 3.30)

38.40

—

31.10

—

17.50

—

13.85

—

B29i

CS negated to D(0:31) High-Z GPCM write

access, TRLX = 1, CSNT = 1, ACS = 10 or

ACS = 11, EBDF = 1

(MIN = 0.375

× B1–3.30)

38.40

—

31.10

—

17.50

—

13.85

—

B30

CS, WE(0:3) negated to A(0:31),

BADDR(28:30) Invalid GPCM write

access 7 (MIN = 0.25

× B1–.00)

5.60

—

4.30

—

1.80

—

1.13

—

B30a

WE(0:3) negated to A(0:31),

BADDR(28:30) Invalid GPCM, write

access, TRLX = 0, CSNT = 1, CS negated

to A(0:31) invalid GPCM write access

TRLX = 0, CSNT =1 ACS = 10, or

ACS == 11, EBDF = 0

(MIN = 0.50

× B1 – 2.00)

13.20

—

10.50

—

5.60

—

4.25

—

B30b

WE(0:3) negated to A(0:31) invalid GPCM

BADDR(28:30) invalid GPCM write

access, TRLX = 1, CSNT = 1. CS negated

to A(0:31) invalid GPCM write access

TRLX = 1, CSNT = 1, ACS = 10, or

ACS == 11 EBDF = 0

(MIN = 1.50

× B1 – 2.00)

43.50

—

35.50

—

20.70

—

16.75

—

B30c

WE(0:3) negated to A(0:31),

BADDR(28:30) invalid GPCM write

access, TRLX = 0, CSNT = 1. CS negated

to A(0:31) invalid GPCM write access,

TRLX = 0, CSNT = 1 ACS = 10,

ACS == 11, EBDF = 1

(MIN = 0.375

× B1–3.00)

8.40

—

6.40

—

2.70

—

1.70

—

B30d

WE(0:3) negated to A(0:31),

BADDR(28:30) invalid GPCM write access

TRLX = 1, CSNT =1, CS negated to

A(0:31) invalid GPCM write access

TRLX = 1, CSNT = 1, ACS = 10 or 11,

EBDF = 1

38.67

—

31.38

—

17.83

—

14.19

—

Table 9. Bus Operation Timings (continued)

Num

Characteristic

33 MHz

40 MHz

66 MHz

80 MHz

Unit

Min

Max

Min

Max

Min

Max

Min

Max

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