DS90UB947-Q1 Datasheet, PDF (32/81 Pages) Texas Instruments – 1080p OpenLDI to FPD-Link III Serializer

DS90UB947-Q1
SNLS454 – NOVEMBER 2014
Device Functional Modes (continued)
Mode
MAPSEL: OpenLDI Bit Mapping
COAX: Cable Type
Table 6. MODE_SEL[1:0] Settings (continued)
Setting
0
1
0
1
Function
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
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#
Ratio
V_R4/V_DD18
1
0
2
0.213
3
0.328
4
0.444
5
0.560
6
0.676
7
0.792
8
1
Target V_R4
(V)
0
0.383
0.591
0.799
1.008
1.216
1.425
1.8
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
51.1
107
30.9
118
40.2
OPEN
OLDI_DUAL
0
0
0
0
1
1
1
1
AUTO_SS
0
0
1
1
0
0
1
1
#
Ratio
V_R6/V_DD18
1
0
2
0.213
3
0.328
4
0.444
5
0.560
6
0.676
7
0.792
8
1
Table 8. Configuration Select (MODE_SEL1)
Target V_R6
(V)
0
0.383
0.591
0.799
1.008
1.216
1.425
1.8
Suggested Resistor Suggested Resistor
Pull-Up R5 kΩ (1% Pull-Down R6 kΩ
tol)
(1% tol)
OPEN
40.2
115
30.9
107
52.3
113
90.9
82.5
105
51.1
107
30.9
118
40.2
OPEN
MAPSEL
0
0
0
0
1
1
1
1
The strapped values can be viewed and/or modified in the following locations:
• OLDI_DUAL : Latched into OLDI_IN_MODE (0x4F[6], inverted from strap value).
• AUTO_SS : Latched into SOFT_SLEEP (0x01[7]).
• REPEATER : Latched into TX_RPTR (0xC2[5]).
• MAPSEL : Latched into OLDI_MAPSEL (0x4F[7]).
REPEATER
0
1
0
1
0
1
0
1
COAX
0
0
1
1
0
0
1
1
32
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