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GS7000
Serial Digital Video Transceiver
PRELIMINARY DATA SHEET
FEATURES
鈥?fully integrated 270Mb/s SDI receiver or transmitter
鈥?fully compliant with SMPTE 259M-C
鈥?lock and carrier detect output indication
鈥?performance from 0 - 85擄C
RECEIVER FUNCTION
鈥?accepts SMPTE 259M-C 270Mb/s serial digital video
and outputs SMPTE 125M compliant 27Mb/s parallel
digital video and clock
鈥?integrated cable equalization (beyond 100m Belden
8281)
鈥?ease of design use and adjustment free operation
鈥?H timing signal output
TRANSMITTER FUNCTION
鈥?accepts SMPTE 125M (27Mb/s) parallel video data and
clock, outputs SMPTE 259M-C 270Mb/s serial digital
video
鈥?integrated cable driver provides one differential output
(or two single-ended outputs)
APPLICATIONS
Space limited, low power 270Mb/s serial to parallel or
parallel to serial interfaces; Alternate, broadcast quality
uncompressed video interface for industrial and
professional video equipment using the IEEE P1394
interface.
ORDERING INFORMATION
PART NUMBER
GS7000-CQT
GS7000-CTT
PACKAGE
52 pin MQFP
52 pin MQFP Tape
TEMPERATURE
0擄C to 85擄C
0擄C to 85擄C
DESCRIPTION
The GS7000 is a dual function IC capable of operating as
either a 270Mb/s Serial Digital Video receiver or a 270Mb/s
Serial Digital Video transmitter. The GS7000 is designed so
that it can be programmed to operate in either receive or
transmit mode via a mode select pin.
When operating as a receiver, the serial data input accepts
SMPTE 259M-C compliant signals. Line terminations are on
the device. An on-chip by-passable fixed gain equalizer
provides cable equalization beyond 100m of high quality
co-axial cable. The clock recovery is performed on chip
with minimal external components. Incoming Serial Digital
Video data is decoded using a NRZI decoder and SMPTE
descrambler to provide clocked SMPTE 125M compliant
parallel output. The SMPTE descrambler and NRZI
decoding functions can be disabled.
When operating as a transmitter, the GS7000 accepts
parallel SMPTE 125M compliant ten bit video. An on-chip
scrambler and NRZI encoder converts the parallel data into
a bit serial SMPTE 259M-C compliant NRZI output signal
suitable for driving co-axial cable. Through the SMPTE
select pin, the SMPTE scrambler and NRZI coding functions
can be disabled.
GS7000
SMPTE
C
1
C
2
D
IN (0,9)
10
SCRAMBLER
P to S
NRZI
ENCODER
SDO
SDO
SIGNAL
LOCK
DETECT
f/10
PCLK
OUT
H
PLL
LOCK
CD
PCLK
IN
MUX
D
OUT(0,9)
10
S to P
TRS
DETECTOR
DESCRAMBLER
NRZI
DECODER
SLICER
EQUALIZER
SDI
SDI
SMPTE
Rx/Tx
EQ
BLOCK DIAGRAM
Revision Date: August 1999
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: info@gennum.com
www.gennum.com
Document No. 522 - 06 - 02