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GS2985 数据表(PDF) 8 Page - Semtech Corporation

部件名 GS2985
功能描述  Multi-Rate SDI Reclocker with Equalization & De-emphasis
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

GS2985 数据表(HTML) 8 Page - Semtech Corporation

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GS2985 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
36663 - 5
July 2012
8 of 45
Proprietary & Confidential
33
SD/HD
Output
This signal will be LOW for all rates other than 270Mb/s.
This signal is HIGH for 270Mb/s.
34
KBB
Analog Input
Controls the loop bandwidth of the PLL. Leave this pin
floating for serial reclocking applications.
35
DDO1_DISABLE
Logic Input
Disables the DDO1/RCO and DDO1/RCO outputs
when LOW.
See Section 4.14.
36
DATA_MUTE
Logic Input
Mutes the DDO0/DDO0 and DDO1/DDO1 (if data is selected) outputs when
LOW.
Set HIGH for normal operation.
37
DATA/CLOCK
Logic Input
DATA/CLOCK select.
See Section 4.14.
38, 40
DDO1/RCO,
DDO1/RCO
Output
Differential serial clock or data outputs.
39
DE1_EN
Logic Input
De-emphasis on/off pin for serial digital output 1.
HIGH = de-emphasis on
LOW = de-emphasis off
41
VCC_DDO1
Power
Most positive power supply connection for the DDO1/DDO1 output driver.
Connect to 3.3V or 2.5V.
42
VEE_DDO1
Power
Most negative power supply connection for the DDO1/DDO1 output
driver. Connect to GND.
43
GND_DRV
Power
Connect to GND.
44, 46
DDO0, DDO0
Output
Differential Serial Digital Outputs.
45
DE0_EN
Logic Input
De-emphasis on/off pin for serial digital output 0.
HIGH = de-emphasis on
LOW = de-emphasis off
47
VCC_DDO0
Power
Most positive power supply connection for the DDO0/DDO0 output driver.
Connect to 3.3V or 2.5V.
48
VEE_DDO0
Power
Most negative power supply connection for the DDO0/DDO0 output
driver.
Connect to GND.
51
XTAL_BUF_OUT
Output
Buffered output of the reference oscillator.
52
XTAL+
Output
Reference crystal output.
53
XTAL-
Input
Reference crystal input.
55
CS/EQ3_EN
Input/Logic
Input
In host mode (HIF set LOW):
Chip select input for SPI serial host interface. Active-low input.
In non-host mode (HIF set HIGH):
Trace equalization on/off pin for Serial Digital Differential Input 3.
Active-high input.
Table 1-1: GS2985 Pin Descriptions
Pin Number
Name
Type
Description


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