Toshiba TDP-D1, Service Manual

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Figure 11 Lamp Power Supply Interface Timing
Power and Initialization Requirements
Power Good - PWRGOOD
DC supply voltages may be applied in any order at power-up and removed in any order at
power down. The PWRGOOD signal shall be driven high to the DDP1000 electronics when all the
input DC supply voltages are within the recommended operating limits. The DDP1000 electronics
requires that PWRGOOD be driven low in advance of the DC power supplies dropping out of the
recommended operating limits. This time is used to park the DMD.
RESETZ
When RESETZ is low the DDP1000 electronics goes into a reset default state and the DMD is
parked. When RESETZ transitions from low to high the DDP1000 will begin initialization.
Control Interface at Power-up
At power-up, the DDP1000 electronics Control Interface is not functional for some period until the
internal initialization is complete. Figure 12 indicates the requirements for the Control Interface
commands at power-up.