Manual Hot Plug Assert; Clock Termination; Free-Run Operation - Analog Devices ADV7619 Reference Manual

ADV7619 Reference Manual

6 MANUAL HOT PLUG ASSERT

To manually assert a hot plug, to replicate a downstream hot plug in a repeater application for example, the writes below should be used.
• Port A:
To manually assert hot plug on port A, the following writes should be used.
• Port B:
To manually assert hot plug on port A, the following writes should be used.
When a hot plug was asserted manually, it must also be de-asserted manually.

7 CLOCK TERMINATION

The clock termination on both Port A and Port B can be enabled manually by the following writes:
HDMI Map
68 01 00
68 83 FC
The clock termination can also be enabled automatically. This can be done by setting TERM_AUTO (HDMI Map, Register 0x01[0]) to 1.

8 FREE-RUN OPERATION

For better control in free-run mode, the free-run resolution can be set manually. This can be achieved by following the steps below:
•
Set PRIM_MODE[3:0] to the desired free-run standard (IO Map, Register 0x01[3:0])
• Set VID_STD[5:0] to the desired free-run standard (IO Map, Register 0x00[5:0])
• Set V_FREQ[2:0] to the desired free-run frame rate (IO Map, Register 0x01[6:4])
•
Set DIS_AUTO_PARAM_BUFF to 1 (CP Map, Register 0xC9[0]) for the free-run resolution to be defined by PRIM_MODE[3:0],
VID_STD[5:0] and V_FREQ[2:0]
The free-run output defined by PRIM_MODE[3:0], VID_STD[5:0] and V_FREQ[2:0] is generated by the CP core. It is possible to force the
CP core to free-run. This can be done by setting CP_FORCE_FREERUN to 1 (CP Map, Register 0xBF[0]).
Note: It is not possible to set the free-run resolution manually for input video resolutions with a pixel clock of greater than170 MHz. For these
modes, the CP core is bypassed.
HDMI Map and IO Map
68 6C A3
98 20 B0
HDMI Map and IO Map
68 6C A3
98 20 70
TERM_AUTO set to 0. Automatic clock termination control disabled (default)
Enable clock termination manually on both part A and port B
ADV7619 Required Settings Manual
Hot plug assert controlled manually
Manually assert hot plug on port A
Hot plug assert controlled manually
Manually assert hot plug on port B
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