GS2972 datasheet(23/125 Pages) SEMTECH

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GS2972 3G/HD/SD-SDI Serializer with Complete

SMPTE Audio & Video Support

Final Data Sheet

Rev. 9

GENDOC-047479

September 2013

23 of 125

www.semtech.com

2.4 AC Electrical Characteristics

Table 2-4: AC Electrical Characteristics

VCC = +3.3V ±5%, TA = -20°C to +85°C, unless otherwise shown

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Note

System

Device Latency

–

3G bypass

(PCLK = 148.5 MHz)

–54

–

PCLK

–

3G SMPTE without

audio

(PCLK = 148.5 MHz)

–95

–

PCLK

–

3G SMPTE with

audio

(PCLK = 148.5 MHz)

–

1106

–PCLK

–

3G IOPROC

disabled 20-bit

mode

(PCLK = 148.5MHz)

–94

–

PCLK

–

HD bypass

(PCLK = 74.25 MHz)

–54

–

PCLK

–

HD SMPTE without

audio

(PCLK = 74.25 MHz)

–95

–

PCLK

–

HD SMPTE with

audio

(PCLK = 74.25 MHz)

–

1106

–PCLK

–

HD IOPROC

disabled 10-bit

mode

(PCLK = 74.25MHz)

–

SD bypass

(PCLK = 27 MHz)

–54

–

PCLK

–

SD SMPTE without

audio

–

112

–

PCLK

–

SD SMPTE with

audio

–

638

–

PCLK

–

SD IOPROC

disabled 10-bit

mode

(PCLK = 27MHz)

–94

–

PCLK

–

–DVB-ASI–

–

PCLK

–

Reset Pulse Width

treset

–1

–

Parallel Input

Parallel Clock Frequency

fPCLK

–

13.5

–

148.5

MHz

–

Parallel Clock Duty Cycle

DCPCLK

–40

–

60%

–

Input Data Setup Time

tsu

50% levels;

+3.3V or +1.8V

operation

1.2

–

Input Data Hold Time

tih

0.8

–

Serial Digital Output

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