GS4910B GENNUM [Gennum Corporation], GS4910B Datasheet - Page 32

• Manufacturer Part Number: GS4910B
• Description: HD/SD/Graphics Clock and Timing Generator with GENLOCK
• Manufacturer: GENNUM [Gennum Corporation]

Table 2-2: AC Electrical Characteristics (Continued)
V
Parameter
PCLK1 & PCLK2 Rise/Fall Times
15pF load
20% - 80%
PCLK3 Rise/Fall Time
20% - 80%
PCLK Outputs Relative Timing
Skew
ACLK Frequency
(GS4911B only)
ACLK Duty Cycle
(GS4911B only)
ACLK1-3 Rise/Fall Times
15pF load
20% - 80%
(GS4911B only)
ACLK Outputs Relative
Timing Skew
(GS4911B only)
Digital Timing Output Delay Time
Digital Timing Output Hold Time
DD
= 1.8V, T
A
= 0°C to 70°C, unless otherwise specified.
Symbol
–
–
–
–
–
–
–
–
–
–
–
–
–
t
t
OD
OH
36655 - 2
April 2006
Condition
IO_VDD = 1.8V
current drive = LOW
IO_VDD = 3.3V
current drive = LOW
IO_VDD = 1.8V
current drive =
HIGH
IO_VDD = 3.3V
current drive =
HIGH
100Ω differential
load
10pF to ground per
pin
default PCLK phase
delay of zero
–
–
IO_VDD = 1.8V
current drive = LOW
IO_VDD = 3.3V
current drive = LOW
IO_VDD = 1.8V
current drive =
HIGH
IO_VDD = 3.3V
current drive =
HIGH
–
–
–
0.0097
Min
40
-3
-3
–
–
–
–
–
–
–
–
–
–
1
GS4911B/GS4910B Data Sheet
Typ
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
49.152
Max
850
1.7
1.5
1.1
0.9
3.0
1.5
2.5
1.4
4.3
60
3
3
–
Units
MHz
ns
ns
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
%
32 of 113
Notes
–
–
–
–
–
4
–
5
–
–
–
–
4
6
6