XPC850ZT50BU Datasheet, PDF (15/76 Pages) Motorola, Inc – Communications Controller Hardware Specifications

Layout Practices
Table 6-6. Bus Operation Timing ¹ (continued)
Num
Characteristic
50 MHz
66 MHz
80 MHz
Cap Load
FFACT (default Unit
Min Max Min Max Min Max
50 pF)
B28b CLKOUT falling edge to CS
— 12.00 — 14.00 — 13.00 0.250 50.00
ns
negated GPCM write access
TRLX = 0,1 CSNT = 1, ACS = 10
or ACS = 11, EBDF = 0
B28c CLKOUT falling edge to
7.00 14.00 11.00 18.00 9.00 16.00 0.375 50.00
ns
WE[0–3] negated GPCM write
access TRLX = 0,1 CSNT = 1
write access TRLX = 0, CSNT =
1, EBDF = 1
B28d CLKOUT falling edge to CS
— 14.00 — 18.00 — 16.00 0.375 50.00
ns
negated GPCM write access
TRLX = 0,1 CSNT = 1, ACS = 10
or ACS = 11, EBDF = 1
B29 WE[0–3] negated to D[0–31], 3.00 — 6.00 — 4.00 — 0.250 50.00
ns
DP[0–3] high-Z GPCM write
access, CSNT = 0
B29a WE[0–3] negated to D[0–31], 8.00 — 13.00 — 11.00 — 0.500 50.00
ns
DP[0–3] high-Z GPCM write
access, TRLX = 0 CSNT = 1,
EBDF = 0
B29b CS negated to D[0–31],
3.00 — 6.00 — 4.00 — 0.250 50.00
ns
DP[0–3], high-Z GPCM write
access, ACS = 00, TRLX = 0 &
CSNT = 0
B29c CS negated to D[0–31], DP[0–3] 8.00 — 13.00 — 11.00 — 0.500 50.00
ns
high-Z GPCM write access,
TRLX = 0, CSNT = 1, ACS = 10
or ACS = 11, EBDF = 0
B29d WE[0–3] negated to D[0–31], 28.00 — 43.00 — 36.00 — 1.500 50.00
ns
DP[0–3] high-Z GPCM write
access, TRLX = 1, CSNT = 1,
EBDF = 0
B29e CS negated to D[0–31], DP[0–3] 28.00 — 43.00 — 36.00 — 1.500 50.00
ns
high-Z GPCM write access,
TRLX = 1, CSNT = 1, ACS = 10
or ACS = 11, EBDF = 0
B29f WE[0–3] negated to D[0–31], 5.00 — 9.00 — 7.00 — 0.375 50.00
ns
DP[0–3] high-Z GPCM write
access TRLX = 0, CSNT = 1,
EBDF = 1
B29g CS negated to D[0–31], DP[0–3] 5.00 — 9.00 — 7.00 — 0.375 50.00
ns
high-Z GPCM write access
TRLX = 0, CSNT = 1, ACS = 10
or ACS = 11, EBDF = 1
MOTOROLA
MPC850 (Rev. A/B/C) Hardware Specifications
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