Figure 8-5 Clock Distribution, Output Channel
INSTANCES (1) | DIVISION VALUES |
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PSA | 4, 5, 6 |
PSB | 4, 5, 6 |
(1) A known phase relationship for divider synchronization with mixed division values is ensured by architecture.
Table 8-3 Output Buffer Signal StandardsOUTPUT | LVCMOS | HCSL(2) | LVDS | AC-CML(1) | AC-LVPECL(1) |
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Y0 | X | | | | |
Y1 | | X | X | X | X |
Y2 | X | X | X | X | X |
Y3 | X | X | X | X | X |
Y4 | | x | X | x | X |
(1) The common mode shall be provided externally through an external bias source, like a voltage divider or pullup resistor. The output buffer will provide sufficient swing.
(2) For highest performance it is recommended to use HCSL on output Y1 or Y4.
Table 8-4 Output Channel Signal SelectionNO. | INPUT SOURCE | Y1 (N=1) | Y2 (N=2) | Y3 (N=3) | Y4 (N=4) |
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0 | Channel N-1 | | x | x | x |
1 | IOD N | x | x | x | x |
2 | Channel N+1 | x | x | x | |
Table 8-5 Integer Divider Input SelectionNO. | SOURCE |
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0 | Pre-scaler A |
1 | Pre-scaler B |
3 | Bypass |