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參數(shù)資料
| 型號(hào)： | SY58626L |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing |
| 中文描述： | DC至到6.4Gbps背板發(fā)送緩沖器的可選輸出預(yù)加重的I / O DCOffset控制和200mV的，3.0VPP輸出擺幅 |
| 文件頁(yè)數(shù)： | 11/18頁(yè) |
| 文件大小： | 830K |
| 代理商： | SY58626L |
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Micrel, Inc.
SY58626L
March 2006
11
M9999-030206-B
hbwhelp@micrel.com
or (408) 955-1690
Detailed Description
The SY58626L is a high speed, low jitter transmit
buffer with integrated loopback capability. Adjustable
pre-emphasis amplitudes and selectable pre-emphasis
durations are included with the transmitter. The
SY58626L also includes disable and shutdown control
for the transmitter output.
Transmitter
The SY58626L transmitter includes the VTTIN and
VTTOUT pin for maximum interface flexibility and DC-
offset capability for the input and output, respectively.
This feature allows for interfacing with different logic
families without the use of AC-coupling. The output
buffer has internal 50
source terminated CML
outputs for minimizing round-trip reflections.
Figure 1. Variable Output Swing Circuit
Transmitter Variable-Swing Output Buffer
Connecting VREF-CTRL to TXVCTRL sets the
transmitter output buffer to max swing 1.5V
PK
(3.0V
PP
).
Connecting VCC to TXVCTRL sets the
transmitter output buffer to minimum swing
100mV
PK
(200mV
PP
).
Connecting VREF-FIXED to TXVCTRL sets
the transmitter output buffer to 400mV
PK
(800mV
PP
).
Control of the transmitter output swing buffer
can be obtained by using a variable resistor
connected between VREF-CTRL and VCC
with the wiper driving TXVCTRL. Please refer
to Figure 1 for more details.
Transmitter Disable and Shutdown
The SY58626L provides two methods to turn off the
output when desired. When /TXEN is pulled HIGH, the
transmitter output pair is disabled. TXQ goes to a LOW
state and /TXQ goes to a HIGH state. When
/TXQSHDN is pulled LOW, the transmitter output pair
is in shutdown mode. TXQ and /TXQ output currents
are shut off and the TXQ and /TXQ outputs are set to
the same potential. The threshold for the /TXEN and
/TXQSHDN pins is set with the VTH pin. Please refer
to the “Typical Operating Characteristics” for more
details.
Loopback
The SY58626L features a loopback test mode,
activated by setting LBSEL to logic HIGH. Using the
SY58626L with the SY58627L enables local loopback
and link side loopback, shown in Figures 2b and 2c.
This mode enables an external loopback path,
bypassing circuitry on both local and link side. Please
refer to Table 1 and Figure 3 for Loopback Control
information.
Figure 2a. Normal Operation
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SY58626LMH | DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing |
| SY58626LMHTR | DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing |
| SY58627L | DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control |
| SY58627LMG | DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control |
| SY58627LMGTR | DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY58626L_10 | 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with |
| SY58626LMH | 功能描述:總線發(fā)射器 6.4Gbps Transmitter w/ Pre-emphasis (Green) RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:135 Mpps 接口: 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-56 封裝:Reel |
| SY58626LMH TR | 功能描述:總線發(fā)射器 6.4Gbps Transmitter w/ Pre-emphasis (Green) RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:135 Mpps 接口: 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-56 封裝:Reel |
| SY58626LMHTR | 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing |
| SY58627L | 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control |
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