Demo Board Connections
11
SNLU232 – August 2018
Copyright © 2018, Texas Instruments Incorporated
DS90UH949A-Q1EVM User's Guide
Table 1-9. GPIO/Audio Interface
Designator
Signal
Description
J26.18
SDIN/GPIO0
Aux I2S Data Input / Remote or Local I/O
J26.20
SWC/GPIO1
Aux I2S Word Clock Output / Remote or Local I/O
J26.2
I2S_DC/GPIO2
I2S Data Input / Remote or Local I/O
J26.4
I2S_DD/GPIO3
I2S Data Input / Remote or Local I/O
J26.8
I2S_DB/GPIO5_RE
G
I2S Data Input / Local only I/O
J26.10
I2S_DA/GPIO6_RE
G
I2S Data Input / Local only I/O
J26.12
I2S_WC/GPIO7_RE
G
I2S Word Clock Input / Local only I/O
J26.14
I2S_CLK/GPIO8_RE
G
I2S Clock Input / Local only I/O
J26.24
MCLK
I2S System Clock Output
Table 1-10. SPI/D_GPIO Interface
Designator
Signal
Description
J26.32
D_GPIO3/SS
I/O in Dual FPD-Link III mode / Slave Select
J26.30
D_GPIO2/SCLK
I/O in Dual FPD-Link III mode / Serial Clock
J26.28
D_GPIO1/MISO
I/O in Dual FPD-Link III mode / Master In, Slave Out
J26.26
D_GPIO0/MOSI
I/O in Dual FPD-Link III mode / Master Out, Slave In
Configuration of the device may be done via the MODE_SEL[1:0]. These modes are latched into register
location during power-up:
Table 1-11. MODE_SEL[1:0] Settings
Mode
Setting
Function
EDID_SEL: Display ID Select
0
Look for remote EDID, if none found, use internal SRAM EDID. Can be
overridden from register. Remote EDID address may be overridden from
default 0xA0.
1
Use external local EDID.
AUTO-SS: Auto Sleep-State
0
Disable.
1
Enable.
AUX_I2S: AUX Audio
Channel
0
HDMI audio.
1
HDMI + AUX audio channel.
EXT_CTL: External Controller
Override
0
Internal HDCP/HDMI control.
1
External HDCP/HDMI control from I2C interface pins.
COAX: Cable Type
0
Enable FPD-Link III for twisted pair cabling.
1
Enable FPD-Link III for coaxial cabling.
REM_EDID_LOAD: Remote
EDID Load
0
Use internal SRAM EDID.
1
If available, remote EDID is copied into internal SRAM EDID.
(1)
Only set one high.
Table 1-12. Configuration Select (MODE_SEL0) -- SW-DIP8 - S2
(1)
MODE #
EDID_SEL
AUX_I2S
1
0
0
2
0
1
3
1
0
4
1
1