gs9076 Gennum Corporation, gs9076 Datasheet - Page 5

• Manufacturer Part Number: gs9076
• Description: Sd-sdi Automatic Reclocker With Dual Differential Outputs
• Manufacturer: Gennum Corporation

1.2 GS9076 Pin Descriptions
Table 1-1: Pin Descriptions
Pin Number
4, 8, 12,16, 32,
24, 25, 26
43, 49
13, 15
17, 18
9, 11
1, 3
5, 7
10
14
19
20
21
22
23
27
28
2
6
DDI0, DDI0
DDI0_VTT
DDI1,DDI1
DDI1_VTT
DDI2, DDI2
DDI2_VTT
DDI3, DDI3
DDI3_VTT
DDI_SEL[1:0]
AUTOBYPASS
AUTO
VCC_VCO
NC
Name
GND
BYPASS
VEE_VCO
SS[2:0]
LOCKED
44617 - 1
Type
Input
Passive
Passive
Input
Passive
Input
Passive
Input
Passive
Logic Input
Logic Input
Logic Input
Logic Input
Power
Power
Bi-directional
No Connect
Output
January 2008
Description
Serial digital differential input 0.
Center tap of two 50Ω on-chip termination resistors between DDI0 and DDI0.
Recommended connect to GND.
Serial digital differential input 1.
Center tap of two 50Ω on-chip termination resistors between DDI1 and DDI1.
Serial digital differential input 2.
Center tap of two 50Ω on-chip termination resistors between DDI2 and DDI2.
Serial digital differential input 3.
Center tap of two 50Ω on-chip termination resistors between DDI3 and DDI3.
Serial digital input select.
Bypass the reclocker stage.
When BYPASS is HIGH, it overwrites the AUTOBYPASS setting.
Automatically bypasses the reclocker stage when the PLL is not locked
This pin is ignored when BYPASS is HIGH.
Auto select.
This pin should be set HIGH for automatic SD-SDI and DVB-ASI standard
detection.
Most positive power supply connection for the internal VCO section.
Connect to 3.3V.
Most negative power supply connection for the internal VCO section.
Connect to GND.
The SS[2:0] pins will display 010 when the internal PLL has locked to a 270Mb/s
input data rate.
Not connected internally.
Lock Detect.
This pin is set HIGH by the device when the PLL is locked.
DDI_SEL1
0
0
1
1
DDI_SEL0
0
1
0
1
GS9076 Data Sheet
INPUT SELECTED
DDI0
DDI1
DDI2
DDI3
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