DS90UH927Q-Q1 Datasheet, PDF (4/68 Pages) Texas Instruments – 5-MHz to 85-MHz 24-Bit Color FPD-Link III Serializer with HDCP

DS90UH927Q-Q1
SNLS433C – NOVEMBER 2012 – REVISED JANUARY 2015
www.ti.com
Pin Functions (continued)
NAME
I2S_DA
I2S_DB
I2S_DC
I2S_DD
I2S_WC
I2S_CLK
PIN
NO.
3
4
5
6
1
2
I/O, TYPE
DESCRIPTION
I, LVCMOS Digital Audio Interface I²S Data Inputs
w/ pull down Shared with GPIO_REG6, GPIO_REG5, GPIO2, GPIO3
I, LVCMOS Digital Audio Interface I²S Word Clock and I²S Bit Clock Inputs
w/ pull down Shared with GPIO_REG7 and GPIO_REG8
Table 3
LFMODE
25
I, LVCMOS Low Frequency Mode Select
w/ pull down LFMODE = 0, 15 MHz ≤ RxCLKIN ≤ 85 MHz (Default)
LFMODE = 1, 5 MHz ≤ RxCLKIN < 15 MHz
Requires a 10-kΩ pullup if set HIGH
MAPSEL
23
I, LVCMOS FPD-Link Input Map Select
w/ pull down MAPSEL = 0, LSBs on RxIN3± (Default)
MAPSEL = 1, MSBs on RxIN3±
See Figure 19 and Figure 20
Requires a 10-kΩ pullup if set HIGH
REPEAT
21
I, LVCMOS Repeater Mode Select
w/ pull down REPEAT = 0, Repeater Mode disabled (Default)
REPEAT = 1, Repeater Mode enabled
Requires a 10-kΩ pullup if set HIGH
OPTIONAL PARALLEL INTERFACE
GPIO[3:2]
6, 5
I/O, LVCMOS General Purpose I/O
w/ pull down Shared with I2S_DD and I2S_DC
See Table 1
GPIO_REG[
8:5]
2, 1, 3, 4
I/O, LVCMOS Register-Only General Purpose I/O
w/ pull down Shared with I2S_CLK, I2S_WC, I2S_DA, I2S_DB
See Table 2
CONTROL AND CONFIGURATION
IDx
11
I, Analog
I²C Address Select
External pullup to V_DD33 is required under all conditions. DO NOT FLOAT.
Connect to external pullup to V_DD33 and pulldown to GND to create a voltage divider.
See Figure 25 and Table 4
PDB
SCL
SDA
18
I, LVCMOS Power-down Mode Input Pin
w/ pulldown Must be driven or pulled up to V_DD33. Refer to Power Supply Recommendations.
PDB = H, device is enabled (normal operation)
PDB = L, device is powered down.
When the device is in the powered down state, the Driver Outputs are both HIGH, the PLL is
shutdown, and I_DD is minimized. Control Registers are RESET.
9
I/O, LVCMOS I²C Clock Input / Output Interface
Open Drain Must have an external pullup to V_DD33. DO NOT FLOAT.
Recommended pullup: 4.7 kΩ.
10
I/O, LVCMOS I²C Data Input / Output Interface
Open Drain Must have an external pullup to V_DD33. DO NOT FLOAT.
Recommended pullup: 4.7 kΩ.
STATUS
INTB
27
O, LVCMOS
Open Drain
FPD-LINK III SERIAL INTERFACE
HDCP Interrupt
INTB = H, normal
INTB = L, Interrupt request
Recommended pullup: 4.7 kΩ to V_DDIO. DO NOT FLOAT.
CMF
20
Analog Common Mode Filter.
Connect 0.1 µF to GND (required)
DOUT-
16
I/O, LVDS Inverting Output
The output must be AC-coupled with a 0.1-µF capacitor.
DOUT+
17
I/O, LVDS True Output
The output must be AC-coupled with a 0.1-µF capacitor.
4
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