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XPC850ZT50BU Datasheet, PDF (17/76 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)
B31a CLKOUT falling edge to CS valid 5.00 12.00 8.00 14.00 6.00 13.00 0.250 50.00
ns
- as requested by control bit
CST1 in the corresponding word
in the UPM
B31b CLKOUT rising edge to CS valid 1.50 8.00 1.50 8.00 1.50 8.00 —
- as requested by control bit
CST2 in the corresponding word
in the UPM
50.00
ns
B31c CLKOUT rising edge to CS valid 5.00 12.00 8.00 14.00 6.00 13.00 0.250 50.00
ns
- as requested by control bit
CST3 in the corresponding word
in the UPM
B31d CLKOUT falling edge to CS valid 9.00 14.00 13.00 18.00 11.00 16.00 0.375 50.00
ns
- as requested by control bit
CST1 in the corresponding word
in the UPM EBDF = 1
B32 CLKOUT falling edge to BS valid 1.50 6.00 1.50 6.00 1.50 6.00 —
- as requested by control bit
BST4 in the corresponding word
in the UPM
50.00
ns
B32a CLKOUT falling edge to BS valid 5.00 12.00 8.00 14.00 6.00 13.00 0.250 50.00
ns
- as requested by control bit
BST1 in the corresponding word
in the UPM, EBDF = 0
B32b CLKOUT rising edge to BS valid 1.50 8.00 1.50 8.00 1.50 8.00 —
- as requested by control bit
BST2 in the corresponding word
in the UPM
50.00
ns
B32c CLKOUT rising edge to BS valid 5.00 12.00 8.00 14.00 6.00 13.00 0.250 50.00
ns
- as requested by control bit
BST3 in the corresponding word
in the UPM
B32d CLKOUT falling edge to BS valid 9.00 14.00 13.00 18.00 11.00 16.00 0.375 50.00
ns
- as requested by control bit
BST1 in the corresponding word
in the UPM, EBDF = 1
B33 CLKOUT falling edge to GPL 1.50 6.00 1.50 6.00 1.50 6.00 —
valid - as requested by control
bit GxT4 in the corresponding
word in the UPM
50.00
ns
B33a CLKOUT rising edge to GPL
5.00 12.00 8.00 14.00 6.00 13.00 0.250
50.00
ns
valid - as requested by control
bit GxT3 in the corresponding
word in the UPM
MOTOROLA
MPC850 (Rev. A/B/C) Hardware Specifications
17