參數(shù)資料
型號: MPC850DE
廠商: Motorola, Inc.
英文描述: Communications Controller Hardware Specifications
中文描述: 通信控制器的硬件規(guī)格
文件頁數(shù): 14/68頁
文件大?。?/td> 384K
代理商: MPC850DE
14
MPC850 (Rev. A/B/C) Hardware Specifications
MOTOROLA
Layout Practices
B29b
CS negated to D[0–31], DP[0–3],
high-Z GPCM write access, ACS
= 00, TRLX = 0 & CSNT = 0
3.00
6.00
4.00
0.250
50.00
ns
B29c CS negated to D[0–31], DP[0–3]
high-Z GPCM write access,
TRLX = 0, CSNT = 1, ACS = 10
or ACS = 11, EBDF = 0
8.00
13.00
11.00
0.500
50.00
ns
B29d
WE[0–3] negated to D[0–31],
DP[0–3] high-Z GPCM write
access, TRLX = 1, CSNT = 1,
EBDF = 0
28.00
43.00
36.00
1.500
50.00
ns
B29e
CS negated to D[0–31], DP[0–3]
high-Z GPCM write access,
TRLX = 1, CSNT = 1, ACS = 10
or ACS = 11, EBDF = 0
28.00
43.00
36.00
1.500
50.00
ns
B29f
WE[0–3] negated to D[0–31],
DP[0–3] high-Z GPCM write
access TRLX = 0, CSNT = 1,
EBDF = 1
5.00
9.00
7.00
0.375
50.00
ns
B29g
CS negated to D[0–31], DP[0–3]
high-Z GPCM write access TRLX
= 0, CSNT = 1, ACS = 10 or ACS
= 11, EBDF = 1
5.00
9.00
7.00
0.375
50.00
ns
B29h
WE[0–3] negated to D[0–31],
DP[0–3] high-Z GPCM write
access TRLX = 0, CSNT = 1,
EBDF = 1
25.00
39.00
31.00
1.375
50.00
ns
B29i
CS negated to D[0–31], DP[0–3]
high-Z GPCM write access,
TRLX = 1, CSNT = 1, ACS = 10
or ACS = 11, EBDF = 1
25.00
39.00
31.00
1.375
50.00
ns
B30
CS, WE[0–3] negated to A[6–31]
invalid
GPCM write access
9
3.00
6.00
4.00
0.250
50.00
ns
B30a
WE[0–3] negated to A[6–31]
invalid
GPCM write access, TRLX = 0,
CSNT = 1, CS negated to
A[6–31] invalid GPCM write
access TRLX = 0, CSNT =1,
ACS = 10 or ACS = 11, EBDF = 0
8.00
13.00
11.00
0.500
50.00
ns
Table 6. Bus Operation Timing
1
(continued)
Num
Characteristic
50 MHz
66 MHz
80 MHz
FFACT
Cap Load
(default
50 pF)
Unit
Min
Max
Min
Max
Min
Max
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