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參數資料
| 型號： | TMDS261PAGR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | GREEN, PLASTIC, TQFP-64 |
| 文件頁數： | 2/43頁 |
| 文件大?。?/td> | 2160K |
| 代理商： | TMDS261PAGR |
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DEVICE POWER
ELECTRICAL CHARACTERISTICS
HOT-PLUG DETECT
ELECTRICAL CHARACTERISTICS
SLLS953 – DECEMBER 2008............................................................................................................................................................................................ www.ti.com
The TMDS261 is designed to operate from a single 3.3-V supply voltage. The TMDS261 has three power modes
of operation. These three modes are referred to as normal mode, standby mode, and low-power mode.
Normal mode is designed to be used during typical operating conditions. In normal mode, the device is fully
functional and consumes the greatest amount of power.
Standby mode is designed to be used when reduced power is desired, but DDC and HPD communication must
be maintained. Standby mode can be enabled via the I2C interface (See Table 8 through Table 11). or GPIO
interface (See Table 1). In standby mode, the high-speed TMDS data and clock channels are disabled to reduce
power consumption. The internal I2C logic and DDC function normally. HPD[1:3] follow HPD_SINK.
Low-power mode is designed to consume the least possible amount of power while still applying 3.3 V to the
device. Low-power mode can be enabled by either the LP pin or by local I2C (See Table 8 through Table 11). In
low-power mode, all of the inputs and outputs are disabled with the exception of the internal I2C logic and LP pin.
The clock-detect feature in the TMDS261 provides an automatic power-management feature in normal mode. if
no valid TMDS clock is detected, the terminations on the input TMDS data lines are disconnected, and the TMDS
outputs are high-Z. As soon as a valid TMDS clock is detected, the terminations on the TMDS data lines are
connected, the TMDS outputs come out of high-Z, and the device is fully functional and consumes the greatest
amount of power.
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ICC
Normal-mode supply current
LP = HIGH TMDS: VID(pp) = 1200 mV, 3 Gbps TMDS data
170
216
mA
pattern; HPD_SINK = HIGH, S1/S2 = LOW/HIGH, HIGH/HIGH
ISTBY
Standby supply current
LP = HIGH, TMDS: VID(pp) = 1200 mV, 3 Gbps TMDS data
3
5.5
mA
pattern; HPD_SINK = HIGH, S1 = HIGH, S2 = LOW
ISD
Shutdown current
LP = LOW
300
555
A
Normal-mode supply current,
LP = HIGH, No TMDS input clock, HPD_SINK = HIGH, S1/S2
INCLK
12
18
mA
with no active TMDS input cloc
= LOW/HIGH, HIGH/HIGH
The TMDS261 is designed to support the hot-plug indication to the input ports (HDMI/DVI sources connected to
TMDS261) via the HPD[1:2] output pins. The state of the hot-plug output of the selected source follows the state
of the hot-plug input (HPD_SINK input pin) from the sink side. The state of the hot-plug output for the
non-selected source goes low (See Table 1).
The maximum VOH of the HPD depends on VCC. It is recommended that if VOH greater than 3.6 V is needed on
HPD, then an external circuit can be used to drive the VOH off of the +5 V from the HDMI source connected (as
shown in Figure 33).
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH(HPD)
High-level output voltage
IOH = 100 A
2
VCC
V
VOL(HPD)
Low-level output voltage
IOL = 100 A
0
0.4
V
IH
High-level input current
VIH = 2 V, VCC = 3.6 V
–10
10
A
IL
Low-level input current
VIL = 0.8 V, VCC = 3.6 V
–10
10
A
RL
Output source impedance
800
1000
1200
10
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s) :TMDS261
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