Reset Control; Crystal Frequencies Operation - Analog Devices Advantiv ADV7604 Hardware Manual

3.3

Reset Control

The ADV7604 can be reset by a low pulse on the RESET pin (i.e. a hardware reset) with a
minimum width of 5 ms. The EDID/Repeater controller in the HDMI block is not affected by this
reset. It is recommended to wait 5 ms after the low pulse before an I
ADV7604.
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. The
EDID/Repeater controller in the HDMI block is not affected by this reset.
is set to 1 if these 5 V pins are unused and left unconnected.
Function
DIS_CABLE_DET
_RST
0
1
3.4

Crystal Frequencies Operation

XTAL_FREQ_SEL[1:0], IO Map, Address 0x04, [2:1]
The ADV7604 can operate on three different base crystal frequencies. Selecting one over the other
can be desirable in systems where board crosstalk between different components leads to undesirable
interference between video signals.
Function
XTAL_FREQ_SEL
00
01
10
11
Rev. F August 2010
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
Description
Reserved
Xtal frequency is 28.63636 MHz (8 x FSC for NTSC)
Reserved
Reserved
2
36
C write is performed to the
HDMI_PORT_SELECT
DIS_CABLE_DET_RST
ADV7604
(e.g.