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GS2985 Datasheet, PDF (11/45 Pages) Gennum Corporation – Uses standard 27MHz crystal | |||
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Table 2-1: DC Electrical Characteristics (Continued)
Parameter
VIH (2.5V operation)
Symbol
Conditions
â
VOUTâ¥VOH, min
VIH (3.3V operation)
VOUTâ¥VOH, min
IIN
VOL (2.5V operation)
VOL (3.3V operation)
VOH (2.5V operation)
VOH (3.3V operation)
â
VIN = 0V or VIN = VDD
â
VDD = min, IOL = 100μA
VDD = min, IOL = 100μA
â
VDD = min, IOH = -100μA
VDD = min, IOH = -100μA
Hysteresis Voltage (SPI inputs)
â
2.5V operation
3.3V operation
2.3 AC Electrical Characteristics
Min
1.7
2
â
â
â
2.1
VDD
-0.4
â
â
Typ
â
â
+/-10
â
â
â
â
350
420
Max
VDD
+0.3
VDD
+0.3
+/-20
0.4
0.4
â
â
Units
V
V
μA
V
V
V
V
â
mV
â
mV
Table 2-2: AC Electrical Characteristics
Parameter
Serial Input Data Rate
(for reclocking)
Serial Input Data Rate
(bypass)
SPI Operating Speed
Input Voltage Swing
Symbol
DRSDO
â
ÎVSDI
Output Voltage Swing
ÎVOD
Input Trace Equalization
â
Conditions
â
â
â
set ATTEN_EN = 1 for
ÎVSDI>1Vpp
default
see DRIVER_1 register
(0x01) addresses 8 & 9 in
4.15.14 Host Register
Map.
LOW
MED
HIGH
Min Typ Max Units Notes
0.27
â
2.97
Gb/s
â
DC
â
2.97
Gb/s
â
â
â
10
MHz
â
100
2000 mVp-pd
â
300
400
500
mVp-pd
â
600
800
1000 mVp-pd
â
Recommended setting for 0 to 10
â
inches of FR4
Recommended setting for 10 to 20
â
inches of FR4
Recommended setting for >20 inches
â
of FR4
GS2985 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
36663 - 5
July 2012
11 of 45
Proprietary & Confidential
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