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参数资料
| 型号： | TFP101ACPZP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封装： | 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, POWER, THERMALLY ENHANCED, PLASTIC, TQFP-100 |
| 文件页数： | 4/22页 |
| 文件大小： | 285K |
| 代理商： | TFP101ACPZP |
TFP101, TFP101A
TI PanelBus
DIGITAL RECEIVER
SLDS119 - MARCH 2000
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
TFP101/101A clocking and data synchronization
The TFP101/101A receives a clock reference from the DVI transmitter that has a period equal to the pixel time,
Tpix. The frequency of this clock is also referred to as the pixel rate. Since the TMDS encoded data on Rx[2:0]
contains 10 bits per 8 bit pixel it follows that the Rx[2:0] serial bit rate is 10 times the pixel rate. For example,
the required pixel rate to support an XGA resolution with 60 Hz refresh rate is 86 MHz. The TMDS serial bit rate
is 10x the pixel rate or 860 Mb/s. Due to the transmission of this high-speed digital bit stream, on three separate
channels (or twisted-pair wires) of long distances (3-5 meters), phase synchronization between the data steams
and the input reference clock is not guaranteed. In addition, skew between the three data channels is common.
The TFP101/101A uses a 4x oversampling scheme of the input data streams to achieve reliable synchronization
with up to 1-Tpix channel-to-channel skew tolerance. Accumulated jitter on the clock and data lines due to
reflections and external noise sources is also typical of high speed serial data transmission, hence the
TFP101/101A’s design for high jitter tolerance.
The input clock to the TFP101/101A is conditioned by a phase-locked-loop (PLL) to remove high frequency jitter
from the clock. The PLL provides four 10x clock outputs of different phase to locate and sync the TMDS data
streams (4x oversampling). During active display the pixel data is encoded to be transitioned minimized,
whereas in blank, the control data is encoded to be transition maximized. (See TMDS encodings in
Appendix
A) A DVI compliant transmitter is required to transmit in blank for a minimum period of time, 128-Tpix, to ensure
sufficient time for data synchronization when the receiver sees a transition maximized code. Synchronization
during blank, when the data is transition maximized, ensures reliable data bit boundary detection. Phase
synchronization to the data streams is unique for each of the three input channels and is maintained as long
as the link remains active.
TFP101/101A TMDS input levels and input impedance matching
The TMDS inputs to the TFP101/101A receiver have a fixed single-ended termination to AVDD The
TFP101/101A is internally optimized using a laser trim process to precisely fix the impedance at 50
. The
device will function normally with or without a resistor on the EXT_RES pin, so it remains drop-in compatible
with current sockets. The fixed impedance eliminates the need for an external resistor while providing optimum
impedance matching to standard 50-
DVI cables.
Figure 15 shows a conceptual schematic of a DVI transmitter and TFP101/101A receiver connection. A
transmitter drives the twisted pair cable via a current source, usually achieved with an open drain type output
driver. The internal resistor, which is matched to the cable impedance, at the TFP101/101A input provides a
pullup to AVDD . Naturally, when the transmitter is disconnected and the TFP101/101A DVI inputs are left
unconnected, the TFP101/101A receiver inputs pullup to AVDD. The single ended differential signal and full
differential signal is shown in Figure 15. The TFP101/101A is designed to respond to differential signal swings
ranging from 150 mV to 1.56 V with common mode voltages ranging from (AVDD-300 mV) to (AVDD-37 mV).
ADV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TFP101APZP | 功能描述:显示接口集成电路 PanelBus DVI Rcvr 86MHz HSYNC fix RoHS:否 制造商:Texas Instruments 电源电流:125 mA 工作温度范围:- 40 C to + 105 C 封装 / 箱体:WQFN-60 封装:Reel |
| TFP101APZPG4 | 功能描述:显示接口集成电路 PanelBus DVI Rcvr RoHS:否 制造商:Texas Instruments 电源电流:125 mA 工作温度范围:- 40 C to + 105 C 封装 / 箱体:WQFN-60 封装:Reel |
| TFP101PZP | 功能描述:显示接口集成电路 PanelBus DVI Receiver 86MHz RoHS:否 制造商:Texas Instruments 电源电流:125 mA 工作温度范围:- 40 C to + 105 C 封装 / 箱体:WQFN-60 封装:Reel |
| TFP101PZPG4 | 功能描述:显示接口集成电路 PanelBus DVI Rcvr RoHS:否 制造商:Texas Instruments 电源电流:125 mA 工作温度范围:- 40 C to + 105 C 封装 / 箱体:WQFN-60 封装:Reel |
| TFP101SS | 制造商:Pentair Technical Products / Hoffman 功能描述:115V,50/60Hz,64/80W,0.58/0.70A |
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