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參數資料
| 型號： | TMDS461PZTR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, TQFP-100 |
| 文件頁數： | 9/43頁 |
| 文件大小： | 3111K |
| 代理商： | TMDS461PZTR |
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Port 4 isselected
Port 1 isselected
Port 2 isselected
Port 3 isselected
[5V_PWR4 = LOW &
5V_PWR1 = LOW &
5V_PWR2 = LOW &
5V_PWR3 = HIGH ]
[5V_PWR4 = LOW &
5V_PWR1 = LOW &
5V_PWR2 = HIGH &
5V_PWR3 = X ]
[5V_PWR4 = LOW &
5V_PWR1 = HIGH &
5V_PWR2 = X &
5V_PWR3 = X ]
[5V_PWR4 = LOW &
5V_PWR1 = LOW &
5V_PWR2 = HIGH &
5V_PWR3 = X ]
[5V_PWR4 = LOW &
5V_PWR1 = HIGH &
5V_PWR2 = X &
5V_PWR3 = X ]
[5V_PWR4 = HIGH &
5V_PWR1 = X &
5V_PWR2 = X &
5V_PWR3 = X ]
[5V_PWR4 = LOW &
5V_PWR1 = HIGH &
5V_PWR2 = X &
5V_PWR3 = X ]
TMDS461 configuredin Automatic
PortSelectionModewith
Port 4 asPriorityPort
[5V_PWR4 =High &
5V_PWR1 = X &
5V_PWR2 = X &
5V_PWR3 = X ]
TMDS DDC and Local I
2C Pins
www.ti.com ............................................................................................................................................................................................... SLLS915 – JANUARY 2009
Figure 7. TMDS461 Configured in AutoSelect Mode, with Port 4 as Priority Port
DDC I2C Buffer or Repeater: The TMDS461 provides buffering on the DDC I2C interface for each of the input
ports connected. This feature isolates the capacitance on the source side from the sink side and thus helps in
passing system-level compliance. See the DDC I2C Function Description section for a detailed description on
how the DDC I2C buffer operates. Note that a key requirement on the sink side is that the VIL(Sink) (input to
TMDS461) should be less than 0.4 V. This requirement should be met for the DDC I2C buffer to function
properly. There are three settings of VIL(Sink) and VOL(Sink) that can be chosen based on OVS settings (See
Table 9).
Local I2C Interface: The TMDS461 includes a slave I2C interface to control device features like TMDS input port
selection, TMDS output edge-rate control, power management, DDC buffer OVS settings, etc. See Table 7
through Table 13. The TMDS461 is designed to be controlled via a local I2C interface or GPIO interface, based
on the status of the I2C_SEL pin. The local I2C interface in the TMDS461 is only a slave I2C interface. See the
Copyright 2009, Texas Instruments Incorporated
17
Product Folder Link(s) :TMDS461
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