Datasheet

MPC852T PowerQUICC™ Hardware Specifications, Rev. 4
20 Freescale Semiconductor
Bus Signal Timing
B32a CLKOUT falling edge to BS valid - as
requested by control bit BST1 in the
corresponding word in the UPM, EBDF = 0
(MAX = 0.25 × B1 + 6.80)
7.60 14.30 6.30 13.00 5.00 11.80 3.80 10.50 ns
B32b CLKOUT rising edge to BS
valid - as
requested by control bit BST2 in the
corresponding word in the UPM
(MAX = 0.00 × B1 + 8.00)
1.50 8.00 1.50 8.00 1.50 8.00 1.50 8.00 ns
B32c CLKOUT rising edge to BS
valid - as
requested by control bit BST3 in the
corresponding word in the UPM
(MAX = 0.25 × B1 + 6.80)
7.60 14.30 6.30 13.00 5.00 11.80 3.80 10.50 ns
B32d CLKOUT falling edge to BS
valid- as
requested by control bit BST1 in the
corresponding word in the UPM, EBDF = 1
(MAX = 0.375 × B1 + 6.60)
13.30 18.00 11.30 16.00 9.40 14.10 7.60 12.30 ns
B33 CLKOUT falling edge to GPL
valid - as
requested by control bit GxT4 in the
corresponding word in the UPM
(MAX = 0.00 × B1 + 6.00)
1.50 6.00 1.50 6.00 1.50 6.00 1.50 6.00 ns
B33a CLKOUT rising edge to GPL
Valid - as
requested by control bit GxT3 in the
corresponding word in the UPM
(MAX = 0.25 × B1 + 6.80)
7.60 14.30 6.30 13.00 5.00 11.80 3.80 10.50 ns
B34 A(0:31), BADDR(28:30), and D(0:31) to
CS
valid - as requested by control bit
CST4 in the corresponding word in the
UPM (MIN = 0.25 × B1 – 2.00)
5.60 — 4.30 — 3.00 — 1.80 — ns
B34a A(0:31), BADDR(28:30), and D(0:31) to
CS
valid - as requested by control bit
CST1 in the corresponding word in the
UPM (MIN = 0.50 × B1 – 2.00)
13.20 — 10.50 — 8.00 — 5.60 — ns
B34b A(0:31), BADDR(28:30), and D(0:31) to
CS
valid - as requested by CST2 in the
corresponding word in UPM
(MIN = 0.75 × B1 – 2.00)
20.70 — 16.70 — 13.00 — 9.40 — ns
B35 A(0:31), BADDR(28:30) to CS
valid - as
requested by control bit BST4 in the
corresponding word in the UPM
(MIN = 0.25 × B1 – 2.00)
5.60 — 4.30 — 3.00 — 1.80 — ns
B35a A(0:31), BADDR(28:30), and D(0:31) to
BS
valid - As Requested by BST1 in the
corresponding word in the UPM
(MIN = 0.50 × B1 – 2.00)
13.20 — 10.50 — 8.00 — 5.60 — ns
Table 9. Bus Operation Timings (continued)
Num Characteristic
33 MHz 40 MHz 50 MHz 66 MHz
Unit
Min Max Min Max Min Max Min Max