Analog Devices ADV8003, Hardware Manual

Page: 247 / 440

ADV8003 Hardware Manual
Rev. B, August 2013 247
Function
hpd_override[1:0] Description
00  HPD from HPD pin and CDC HPD
01 HPD from CDC HPD
10 HPD from HPD pin
11 HPD set to 1
rx_sense_state , TX2 Main Map, Address 0xF442[5] (Read Only)
This bit is used to readback the state of the Rx sense.
Function
rx_sense_state Description
0  HDMI clock termination not detected
1 HDMI clock termination detected
rx_sense_pd
, TX2 Main Map, Address 0xF4E6[2]
This bit is used to enable the termination sense power down.
Function
rx_sense_pd Description
0  Termination Sense Monitoring Enabled
1 Termination Sense Monitoring Disabled
Note
: rx_sense_pd should not be applied during the configuration of the HDMI Tx as it disables an oscillator required to complete the
configuration of the TMDS output clock channel. It is recommended to use rx_sense_pd when the HDMI Tx has been completely
configured.
6.2. RESET STRATEGY
The HDMI Tx, and subsections of it, can be reset in a number of ways. Table 46 , Table 47 and Table 48 describe how each of the HDMI Tx
maps are reset in response to a number of different events.
Table 46: HDMI Tx Main Map Reset Strategy
IO Map IO Map IO Map TX Main
Map TX Main
Map Event Event
tx1_reset 0x1AFC[7] main_reset system_pd 0xEC98[4]
0xF498[4] Tx Hot Plug Reset Pin
0x00 – 0x91 Reset Reset Reset Reset Reset
0x92 – 0x97 Reset Reset Reset
0x98 – 0xAE Reset Reset Reset
0xAF – 0xBD Reset Reset Reset Reset
0xBE – 0xCF Reset Reset Reset Reset
0xD0 – 0xFE Reset Reset Reset
Table 47: HDMI Tx CEC Map Reset Strategy
IO Map IO Map IO Map TX Main
Map TX Main
Map Event Event
tx1_reset
0x1AFC[7]
main_reset system_pd
0xEC98[4]
0xF498[4] Tx Hot Plug Reset Pin
0x00 – 0xFF Reset Reset Reset Reset