DS90UH947-Q1 Datasheet, PDF (32/87 Pages) Texas Instruments – 1080p OpenLDI to FPD-Link III Serializer with HDCP

DS90UH947-Q1
SNLS455 – NOVEMBER 2014
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8.3.16.6 Auto Scrolling
The Pattern Generator supports an Auto-Scrolling mode, in which the output pattern cycles through a list of
enabled pattern types. A sequence of up to 16 patterns may be defined in the registers. The patterns may
appear in any order in the sequence and may also appear more than once.
8.3.16.7 Additional Features
Additional pattern generator features can be accessed through the Pattern Generator Indirect Register Map. It
consists of the Pattern Generator Indirect Address (PGIA reg_0x66 — Table 10) and the Pattern Generator
Indirect Data (PGID reg_0x67 — Table 10). See Application Note AN-2198.
8.4 Device Functional Modes
8.4.1 Mode Select Configuration Settings (MODE_SEL[1:0])
Configuration of the device may be done via the MODE_SEL[1:0] input pins, or via the configuration register bits.
A pull-up resistor and a pull-down resistor of suggested values may be used to set the voltage ratio of the
MODE_SEL[1:0] inputs. See Table 7 and Table 8. These values will be latched into register location during
power-up:
Mode
OLDI_DUAL: OpenLDI Interface
AUTO_SS: Auto Sleep-State
REPEATER: Configure
Repeater
MAPSEL: OpenLDI Bit Mapping
COAX: Cable Type
Table 6. MODE_SEL[1:0] Settings
Setting
0
1
0
1
0
1
0
1
0
1
Function
Single-pixel OpenLDI interface.
Dual-pixel OpenLDI interface.
Disable.
Enable.
Disable repeater mode.
Enable repeater mode.
OpenLDI bit mapping.
SPWG bit mapping.
Enable FPD-Link III for twisted pair cabling.
Enable FPD-Link III for coaxial cabling.
1.8V
R₃
VR4
1.8V
R₄
R5
VR6
R₆
MODE_SEL0
MODE_SEL1
Serializer
Figure 30. MODE_SEL[1:0] Connection Diagram
#
Ratio
V_R4/V_DD18
1
0
2
0.213
3
0.328
4
0.444
5
0.560
Target V_R4
(V)
0
0.383
0.591
0.799
1.008
Table 7. Configuration Select (MODE_SEL0)
Suggested
Resistor Pull-Up
R3 kΩ (1% tol)
Suggested
Resistor Pull-
Down R4 kΩ (1%
tol)
OPEN
40.2
115
30.9
107
52.3
113
90.9
82.5
105
OLDI_DUAL
0
0
0
0
1
AUTO_SS
0
0
1
1
0
REPEATER
0
1
0
1
0
32
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