GS2972 Datasheet, PDF (25/125 Pages) Semtech Corporation – 3G/HD/SD-SDI Serializer with Complete SMPTE Audio & Video Support

Table 2-4: AC Electrical Characteristics (Continued)
V_CC = +3.3V ±5%, T_A = -20°C to +85°C, unless otherwise shown
Parameter
Symbol
Conditions
Min
Typ
Max Units Note
Time between end of
PCLK
(MHz)
ns
command word (or data in
Auto-Increment mode) and
the first SCLK of the
t₅
following data word - read
50% levels
+3.3V or +1.8V
operation
unlocked
13.5
27.0
1187
297
148.4
–
cycle
74.25
53.9
–
ns
–
148.5
27
PCLK
(MHz)
ns
CS high after SCLK falling
edge
50% levels
unlocked 445
t₇
+3.3V or +1.8V
13.5
74.2
–
operation
27.0
37.1
–
ns
–
74.25
13.5
148.5
6.7
Notes:
1. Input setup and hold time is dependent on the rise and fall time on the parallel input. Parallel clock and data with rise time or fall time greater
than 500ps require larger setup and hold times.
2. Single Ended into 75Ω external load.
3. ORL depends on board design.
4. Alignment Jitter = measured from 100kHz to serial data rate/10.
5. Alignment Jitter = measured from 1kHz to 27MHz.
6. This is the maximum jitter for a BER of 10-12. The equivalent jitter value as per RP184 is 40ps max.
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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