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| 型號： | TMDS351PAGR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 多路復(fù)用及模擬開關(guān) |
| 英文描述： | 3-CHANNEL, AUDIO/VIDEO SWITCH, PQFP64 |
| 封裝： | GREEN, PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大小： | 549K |
| 代理商： | TMDS351PAGR |
HPD1
SDA1
SCL1
HPD2
SDA2
SCL2
HPD3
SDA3
SCL3
EQ
S1
S2
HPD_SINK
SDA_SINK
SCL_SINK
Y1/Z1
Y2/Z2
Y3/Z3
Y4/Z4
VSADJ
E-EDID
HDMIRX
DDC_SDA
DDC_SCL
5V
47kW
mController
3.3V
4.7kW
CEC
4.02 kW 10%
GND
1kW
HPD
5V
SDA
SCL
CEC
CLK
D 0
HPD
5V
SDA
SCL
CEC
CLK
D0
D1
D2
HPD
5V
SDA
SCL
CEC
CLK
D0
D1
D2
SINK
HPD
5V
SDA
SCL
CEC
CLK
D0
D1
D2
SOURCE1
HPD
5V
SDA
SCL
CEC
CLK
D0
1
D
D2
D1
D2
SOURCE2
HPD
5V
SDA
SCL
CEC
CLK
D0
D1
D2
SOURCE3
A11/B11
A12/B12
A13/B13
A14/B14
VDD
(5V)
VCC
(3.3V)
A21/B21
A22/B22
A23/B23
A24/B24
A31/B31
A32/B32
A33/B33
A34/B34
Y1/Z1
Y2/Z2
Y3/Z3
Y4/Z4
A DTV Supporting an Active CEC Link
Case 1 – AC Coupled Source (See Figure 19, Port 1)
Case 2 – DC Coupled Source (See Figure 19, Port 2)
www.ti.com .......................................................................................................................................................... SLLS840A – MAY 2007 – REVISED AUGUST 2007
Figure 18. Three-Port HDMI Enabled DTV with TMDS351 – CEC Commands Passing Through
In Figure 19, the CEC PHY and CEC LOGIC functions are added. The DTV can initiate and/or react to CEC
signals from its remote control or other audio/video products on the same CEC bus. All sources must have their
own CEC physical address to support the full functionality of the CEC link.
A source reads its CEC physical address stored its E-EDID memory after receiving a logic-high from the HPD
feedback. When HPD is high, the sink-assigned CEC physical address should be maintained. Otherwise, when
HPD is low the source sets CEC physical address value to (F.F.F.F).
When the source TMDS lines are AC coupled or when the source cannot detect the TMDS termination provided
in the connected sink, the indication of the source selection can only come from the HPD signal. The TMDS351
HPD1 pin should be applied directly as the HPD signal back to the source.
When the source TMDS lines are DC coupled, there are two methods to inform the source that it is the active
source to the sink. One is checking the HPD signal from the sink, and the other is checking the termination
condition in the sink.
In a full CEC operation mode, the HPD signal is set high whether the port is selected or not. The source loads
and maintains the CEC physical address when HPD is high. As soon as HPD goes low, the source loses the
CEC physical address. To keep the CEC physical address to the source, the HPD signal is looping back from the
source provided 5-V signal through a 1-k
pull-up resistor in the sink. This method is acceptable in application
where the HDMI transmitter can detect the receiver termination by current sensing, and the receiver has
switchable termination on the TMDS inputs. The internal termination resistors are connected to the termination
voltage when the port is selected, or they are disconnected when the port is not selected. The TMDS351
features switchable termination on the TMDS inputs.
Copyright 2007, Texas Instruments Incorporated
19
Product Folder Link(s): TMDS351
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| TMDS351PAGRG4 | 功能描述:視頻開關(guān) IC 3-to-1 HDMI Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| TMDS361 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1080p - Deep Color 3-to-1 HDMI/DVI Switch with Adaptive Equalization |
| TMDS361APAGR | 制造商:Texas Instruments 功能描述: |
| TMDS361BPAG | 功能描述:視頻開關(guān) IC 3 to 1 HDMI switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| TMDS361BPAGR | 功能描述:視頻開關(guān) IC 3 to 1 HDMI switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
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