DS90C3202
DS90C3202 | (Continued) | |||||
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Address | R/W | RESET | Bit # | Description |
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26d/1ah | R/W | None | [7] | Reserved |
| 0000_0000 |
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| [6:4] | LVDS input skew control for RXE channel B, |
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| 000 (default) applies to no delay added, ONE buffer |
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| delay per step adjustment towards Thold improvements |
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| [3] | Reserved |
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| [2:0] | LVDS input skew control for RXE channel C, |
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| 000 (default) applies to no delay added, ONE buffer |
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| delay per step adjustment towards Thold improvements |
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27d/1bh | R/W | None | [7] | Reserved |
| 0000_0000 |
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| [6:4] | LVDS input skew control for RXE channel D, |
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| 000 (default) applies to no delay added, ONE buffer |
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| delay per step adjustment |
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| [3] | Reserved |
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| [2:0] | LVDS input skew control for RXE channel E, |
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| 000 (default) applies to no delay added, ONE buffer |
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| delay per step adjustment towards Thold improvements |
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28d/1ch | R/W | None | [7:3] | Reserved |
| 0000_0000 |
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| [2] | LVTTL output transition time control for CLK |
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| 0: Tr/Tf = 1.0ns (default) |
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| 1: Tr/Tf = 1.5ns |
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| [1] | LVTTL output transition time control for RXE |
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| 0: Tr/Tf = 1.5ns (default) |
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| 1: Tr/Tf = 2.5ns |
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| [0] | LVTTL output transition time control for RXO |
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| 0: Tr/Tf = 1.5ns (default) |
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| 1: Tr/Tf = 2.5ns |
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29d/1dh | R/W | None | [7:3] | Reserved |
| 0000_0000 |
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| [2:1] | LVTTL output setup and hold time control |
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| 00: balanced setup and hold time (default) |
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| 01: setup time is increased from default position by 1UI |
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| & hold time is reduced from default position by 1UI |
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| 10: setup time is decreased from default position by 1UI |
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| & hold time is reduced from default position by 1UI |
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| 11: setup time is increased from default position by 2UI |
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| & hold time is increased from default position by 2UI |
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| [0] | LVTTL output PTO control |
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| 1: PTO disabled, all outputs setup time are only |
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| controlled by contents of [2:1] |
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| 0: PTO enabled (default) |
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| Group1: CLK to latch Data is |
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| 0.5UI respect to the normal centered position if only |
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| PTO option enabled; but PTO option and (Tsetup or |
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| Thold) adjustment can |
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| Group2: CLK to latch Data stays as the normal |
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| centered position if only PTO option enabled; but PTO |
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| option and (Tsetup or Thold) adjustment can |
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