XPC850ZT50BU Datasheet, PDF (13/76 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)
B7b CLKOUT to BR, BG, FRZ,
5.00 — 7.58 — 6.25 — 0.250 50.00
ns
VFLS[0–1], VF[0–2] IWP[0–2],
LWP[0–1], STS invalid ⁴
B8 CLKOUT to A[6–31],
RD/WR, BURST, D[0–31],
DP[0–3] valid
5.00 11.75 7.58 14.33 6.25 13.00 0.250 50.00
ns
B8a CLKOUT to TSIZ[0–1], REG, 5.00 11.75 7.58 14.33 6.25 13.00 0.250 50.00
ns
RSV, AT[0–3] BDIP, PTR valid
B8b CLKOUT to BR, BG, VFLS[0–1], 5.00 11.74 7.58 14.33 6.25 13.00 0.250 50.00
ns
VF[0–2], IWP[0–2], FRZ,
LWP[0–1], STS valid ⁴
B9 CLKOUT to A[6–31] RD/WR, 5.00 11.75 7.58 14.33 6.25 13.00 0.250 50.00
ns
BURST, D[0–31], DP[0–3],
TSIZ[0–1], REG, RSV, AT[0–3],
PTR high-Z
B11 CLKOUT to TS, BB assertion 5.00 11.00 7.58 13.58 6.25 12.25 0.250 50.00
ns
B11a CLKOUT to TA, BI assertion, 2.50 9.25 2.50 9.25 2.50 9.25 —
(When driven by the memory
controller or PCMCIA interface)
50.00
ns
B12 CLKOUT to TS, BB negation 5.00 11.75 7.58 14.33 6.25 13.00 0.250 50.00
ns
B12a CLKOUT to TA, BI negation
2.50 11.00 2.50 11.00 2.50 11.00 —
(when driven by the memory
controller or PCMCIA interface)
50.00
ns
B13 CLKOUT to TS, BB high-Z
5.00 19.00 7.58 21.58 6.25 20.25 0.250 50.00
ns
B13a CLKOUT to TA, BI high-Z, (when 2.50 15.00 2.50 15.00 2.50 15.00 —
driven by the memory controller
or PCMCIA interface)
50.00
ns
B14 CLKOUT to TEA assertion
2.50 10.00 2.50 10.00 2.50 10.00 —
50.00
ns
B15 CLKOUT to TEA high-Z
2.50 15.00 2.50 15.00 2.50 15.00 —
50.00
ns
B16 TA, BI valid to CLKOUT(setup 9.75 — 9.75 — 9.75 —
—
time) ⁵
50.00
ns
B16a TEA, KR, RETRY, valid to
CLKOUT (setup time^{) 5}
10.00 — 10.00 — 10.00 —
—
50.00
ns
B16b BB, BG, BR valid to CLKOUT 8.50 — 8.50 — 8.50 —
—
(setup time) ⁶
50.00
ns
B17 CLKOUT to TA, TEA, BI, BB, BG, 1.00 — 1.00 — 1.00 —
—
BR valid (Hold time).⁵
50.00
ns
B17a CLKOUT to KR, RETRY, except 2.00 — 2.00 — 2.00 —
—
TEA valid (hold time)
50.00
ns
B18 D[0–31], DP[0–3] valid to
6.00 — 6.00 — 6.00 —
—
CLKOUT rising edge (setup
time) ⁷
50.00
ns
MOTOROLA
MPC850 (Rev. A/B/C) Hardware Specifications
13