GS1501 Datasheet, PDF (1/15 Pages) Gennum Corporation – HDTV Serial Digital Formatter with ANC FIFOs

KEY FEATURES
• SMPTE 292M compliant
• NRZ(I) encoding
• SMPTE 292M scrambler with BYPASS option
• internal FIFOs for ANC data insertion
(1024 Bytes on Y and C channels)
• selectable TRS insertion
• selectable line number insertion
• selectable line based CRC insertion
• selectable active picture illegal code re-mapping
• 20 bit 3.3V CMOS compatible input data bus
• optimized output interface to GS1522
• single +3.3V power supply
• 5V tolerant I/O
APPLICATIONS
• SMPTE 292M Serial Digital Interfaces
+'/,1; ^™ GS1501
HDTV Serial Digital Formatter
with ANC FIFOs
DATA SHEET
DESCRIPTION
The GS1501 HDTV Serial Digital Formatter formats the
HDTV Luma and Chroma data according to SMPTE 292M
prior to serialization by the GS1522 HDTV Serializer. The
GS1501 optionally inserts TRS and line number signals
based on externally supplied H, V and F signals. The
device also allows the insertion of CRCs based on TRS
signals embedded in the input data streams, should the
user choose not to supply external HVF signals.
Following the insertion of TRS, Line Number, and CRC,
protected words of 000-003 and 3FC to 3FF occurring
during the active video period are optionally re-mapped to
004 and 3FB respectively. In addition, ANC data may be
inserted into the video stream through an internal FIFO
interface. Prior to exiting the device SMPTE 292M compliant
NRZ(I) encoding and scrambling may be performed on the
data stream.
TRS_Y/C
DET_TRS
2
FOEN
FM_I/E
ANC_Y/C
FFRST
2
CODE
PROTECT
TRS_INS
LN_INS
CRC_INS
3
DATA_IN
[19:10]
(LUMA)
DATA_IN
[9:0]
(CHROMA)
PCLK_IN
INPUT
BUFFER
and
BLANKER
BLANK
TRS
and
LINE NUMBER
DETECTION
ANC DATA
INSERTION
FIFOS
ILLEGAL CODE
REMAPPING
TRS
INSERTION
LINE NUMBER
INSERTION
CRC INSERTION
3
10
2
[H:V:F]
RSTLN
ANC_IN[9:0] W_CLK
FM_I/E
3
2
REN
WEN
FF_STA
[2:0]
GS1501 FUNCTIONAL BLOCK DIAGRAM
BP_SC
NRZI
ENCODER
SMPTE
SCAMBLER
DATA_OUT
[19:0]
SRST OEN
Revision Date: July 2002
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. [phone] Fax. [phone] E-mail: [e-mail]
www.gennum.com
Document No. 52234 - 4