參數(shù)資料
型號(hào)： GS1560ACFE3
廠商： Gennum Corporation
英文描述： GS1560A/GS1561 HD-LINX-R II Dual-Rate Deserializer
中文描述： GS1560A/GS1561的HD - LINX進(jìn)程- R的第二雙率解串器
文件頁(yè)數(shù)： 33/80頁(yè)
文件大?。?/td> 842K
代理商： GS1560ACFE3
GS1560A/GS1561 Data Sheet
27360 - 8
September 2005
33 of 80
3.4 Serial Digital Loop-Through Output (GS1560A only)
The GS1560A contains an integrated current mode differential serial digital cable
driver with automatic slew rate control. When enabled, this serial digital output
provides an active loop-through of the input signal.
To enable the loop-through output, SDO_EN/DIS must be set HIGH by the
application layer. Setting the SDO_EN/DIS signal LOW will cause the SDO and
SDO output pins to become high impedance, resulting in reduced device power
consumption.
With suitable external return loss matching circuitry, the GS1560A's loop-through
outputs will provide a minimum output return loss of -15dB at SD rates. Gennum
recommends using the GS1528 SDI Dual Slew-Rate Cable Driver to meet output
return loss specifications at HD rates.
The integrated cable driver uses a separate power supply of +1.8V DC supplied via
the CD_VDD and CD_GND pins.
3.4.1 Output Swing
Nominally, the voltage swing of the serial digital loop-through output is 800mV
p-p
single-ended into a 75
Ω
load. This is set externally by connecting the RSET pin to
CD_VDD through 281
Ω
.
The loop-through output swing may be decreased by increasing the value of the
RSET resistor. The relationship is approximated by the curve shown in
Figure 3-1
.
Alternatively, the serial digital output can drive 800mVp-p into a 50
Ω
load. Since
the output swing is reduced by a factor of approximately one third when the smaller
load is used, the RSET resistor must be 187
Ω
to obtain 800mVp-p.
Figure 3-1: Serial Digital Loop-Through Output Swing
300
400
500
600
700
800
900
1000
250
300
350
400
450
500
550
600
650
700
750
RSET(
Ω
)
Δ
V
S
(
p
)
相關(guān)PDF資料
PDF描述
GS1561-CF GS1560A/GS1561 HD-LINX-R II Dual-Rate Deserializer
GS1561-CFE3 GS1560A/GS1561 HD-LINX-R II Dual-Rate Deserializer
GS1574A GS1574A HD-LINX-R II Adaptive Cable Equalizer
GS1574ACNE3 GS1574A HD-LINX-R II Adaptive Cable Equalizer
GS1574 GS1574 HD-LINX -TM II Adaptive Cable Equalizer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
GS1561 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HD-LINX II Dual-Rate Deserializer
GS1561-CF 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述:
GS1561-CFE3 制造商:Semtech Corporation 功能描述:Receiver for HD/SD/ASI w/out loop thru
GS1561-CFT 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述:
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