DS90UB949-Q1 Datasheet, PDF (55/82 Pages) Texas Instruments – 1080p HDMI to FPD-Link III Bridge Serializer

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DS90UB949-Q1
SNLS452 – NOVEMBER 2014
Register Maps (continued)
ADD
(dec)
84
ADD
(hex)
0x54
Register Name
BRIDGE_CFG
Bit(s)
7
6
5
4
3
2
1
0
Table 10. Serial Control Bus Registers (continued)
Register
Type
RW
RW
RW
RW
RW
RW
RW
Default
(hex)
Strap
0x00
Strap
0x00
0x00
Strap
Function
Description
EXT_CTL
External Control: When this bit Is set, the internal bridge control function is disabled. This
disables initialization of the HDMI Receiver. These operations must be controlled by an
external controller attached to the I2C interface. This value is loaded from the
MODE_SEL1 pin at power-up.
HDMI_INT_EN HDMI Interrupt Enable: When this bit is set, Interrupts from the HDMI Receive controller
will be reported on the INTB pin. Software may check the BRIDGE_STS register to
determine if the interrupt is from the HDMI Receiver.
DIS_REM_EDI
D
Disable Remote EDID load: Disables automatic load of EDID SRAM from a remote EDID
EEPROM. By default, the device will check the remote I2C bus for an EEPROM with a
valid EDID, and load the EDID data to local EDID SRAM. If this bit is set to a 1, the
remote EDID load will be bypassed. This value is loaded from the MODE_SEL1 pin at
power-up.
AUTO_INIT_DI Disable Automatic initialization: The Bridge control will automatically initialize the HDMI
S
Receiver for operation. Setting this bit to a 1 will disable automatic initialization of the
HDMI Receiver. In this mode, initialization of the HDMI Receiver must be done through
EEPROM configuration or via external control.
Reserved.
AUDIO_TDM Enable TDM Audio: Setting this bit to a 1 will enable TDM audio for the HDMI audio.
AUDIO_MODE
Audio Mode: Selects source for audio to be sent over the FPD-Link III downstream link.
0 : HDMI audio.
1 : Local/DVI audio.
Local audio is sourced from the device I2S pins rather than from HDMI, and is useful in
modes such as DVI that do not include audio.
AUX_AUDIO_ AUX Audio Channel Enable: Setting this bit to a 1 will enable the AUX audio channel.
EN
This allows sending additional 2-channel audio in addition to the HDMI or DVI audio. This
bit is loaded from the MODE_SEL0 pin at power-up.
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