ZHCSUT0D October 2001 – February 2024 TFP410
PRODUCTION DATA
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TFP410 supports hot plug/unplug (auto connect/disconnect detection) for the DVI link. The receiver sense input (RSEN) bit indicates if a DVI receiver is connected to TXC+ and TXC–. The HTPLG bit reflects the current state of the HTPLG pin connected to the monitor via the DVI connector. When I2C is disabled (ISEL=0), the RSEN value is available on the MSEN pin. When I2C is enabled, the connection status of the DVI link and HTPLG sense pins are provided by the CTL_2_MODE register. The MSEL bits of the CTL_2_MODE register can be used to program the MSEN to output the HTPLG value, the RSEN value, an interrupt, or be disabled.
The source of the interrupt event is selected by TSEL in the CTL_2_MODE register. An interrupt is generated by a change in status of the selected signal. The interrupt status is indicated in the MDI bit of CTL_2_MODE and can be output via the MSEN pin. The interrupt continues to be asserted until a 1 is written to the MDI bit, resetting the bit back to 0. Writing 0 to the MDI bit has no effect.