Analog Devices Advantiv ADV7604 Hardware Manual page 91

CABLE_DET_C_RAW, 5 V Level Detect for Port C, IO Map, Address 0x6F, [2]
Function
CABLE_DET_C_RAW
0
1
CABLE_DET_D_RAW, 5 V Level Detect for Port D, IO Map, Address 0x6F, [1]
Function
CABLE_DET_D_RAW
0
1
The ADV7604 provides a digital glitch filter on the +5 V power signals from the HDMI ports. The
output of this filter is used to reset the HDMI block (refer to Section 7.24).
The +5 V power signal must be constantly high for the duration of the timer in two crystal clock
cycles, otherwise the output of the filter is low. The output of the filter returns low as soon as any
change in the +5 V power signal is detected.
FILT_5V_DET_DIS, 5 V Detect Filter Disable, HDMI Map, Address 0x56, [7]
Function
FILT_5V_DET_DIS
0
1
FILT_5V_DET_TIMER[6:0], 5 V Detect Filter Timer, HDMI Map, Address 0x56, [6:0]
Function
FILT_5V_DET_TIMER[6:
0]
xxxxxxx
1011000
Note: If the 5 V pins are not used and left unconnected, the 5 V detect circuitry should be
disconnected from the HDMI reset signal by setting
holding the HDMI section in reset.
DIS_CABLE_DET_RST, HDMI Map, Address 0x48, [6]
The signals from the 5 V input pins of the HDMI port selected through
RXA_5V for port A) are used to reset the HDMI section when the 5 V input pin is low.
DIS_CABLE_DET_RST
Function
DIS_CABLE_DET
_RST
0
1
Rev. F August 2010
Description
No 5 V level detected on port C
5 V level detected on port C
Description
No 5 V level detected on port D
5 V level detected on port D
Description
Enabled
Disabled
Description
Time duration of 5 V deglitch filter. It is two crystal clock cycles
for XTAL clock of 28.6363 MHz.
Reset value.
is set to 1 if these 5 V pins are unused and left unconnected.
Description
Resets the HDMI section if the 5 V input pin corresponding to the
selected HDMI port (e.g. RXA_5V for port A) is inactive
Does not use the 5 V input pins as reset signal for the HDMI section
DIS_CABLE_DET_RST
91
ADV7604
to 1. This avoids
HDMI_PORT_SELECT (e.g.