GS2972 Datasheet, PDF (23/125 Pages) Semtech Corporation – 3G/HD/SD-SDI Serializer with Complete SMPTE Audio & Video Support

2.4 AC Electrical Characteristics
Table 2-4: AC Electrical Characteristics
V_CC = +3.3V ±5%, T_A = -20°C to +85°C, unless otherwise shown
Parameter
Symbol
Conditions
System
Device Latency
Reset Pulse Width
Parallel Input
Parallel Clock Frequency
Parallel Clock Duty Cycle
Input Data Setup Time
Input Data Hold Time
Serial Digital Output
–
–
–
–
–
–
–
–
–
–
–
–
–
t_reset
3G bypass
(PCLK = 148.5 MHz)
3G SMPTE without
audio
(PCLK = 148.5 MHz)
3G SMPTE with
audio
(PCLK = 148.5 MHz)
3G IOPROC
disabled 20-bit
mode
(PCLK = 148.5MHz)
HD bypass
(PCLK = 74.25 MHz)
HD SMPTE without
audio
(PCLK = 74.25 MHz)
HD SMPTE with
audio
(PCLK = 74.25 MHz)
HD IOPROC
disabled 10-bit
mode
(PCLK = 74.25MHz)
SD bypass
(PCLK = 27 MHz)
SD SMPTE without
audio
SD SMPTE with
audio
SD IOPROC
disabled 10-bit
mode
(PCLK = 27MHz)
DVB-ASI
–
f_PCLK
DC_PCLK
t_su
t_ih
–
–
50% levels;
+3.3V or +1.8V
operation
Min
–
–
–
–
–
–
–
–
–
–
–
–
1
13.5
40
1.2
0.8
Typ
Max Units Note
54
95
1106
–
PCLK
–
–
PCLK
–
–
PCLK
–
94
54
95
1106
–
PCLK
–
–
PCLK
–
–
PCLK
–
–
PCLK
–
98
54
–
PCLK
–
112
–
PCLK
–
638
–
PCLK
–
94
–
PCLK
–
52
–
PCLK
–
–
–
ms
–
–
148.5
MHz
–
–
60
%
–
–
–
ns
1
–
–
ns
1
GS2972 3G/HD/SD-SDI Serializer with Complete
SMPTE Audio & Video Support
Final Data Sheet Rev. 9
GENDOC-047479 September 2013
www.semtech.com
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