GS1503-CFZ Gennum Corp., GS1503-CFZ Datasheet - Page 34

• Manufacturer Part Number: GS1503-CFZ
• Description: HD EMBEDDED AUDIO CODEC
• Manufacturer: Gennum Corp.

Table 8: Multiplex Mode Host Interface Registers
CONTROL
Video
ITEM
CRC_CNT[11:0]
SW_LNB[12:0]
SW_LNA[12:0]
DSCBYPASS
SCRBYPASS
VIDEO_DET
CRC_ERR
VBLK_INS
LIMIT_ON
CRC_INS
8BIT_SEL
EXT_SEL
VM_SEL
VM[3:0]
NAME
RSV
Video input format (external pin/internal register)
configuration select. When set LOW, the video
input format is configured via the VM[3:0] pins.
When set HIGH, the video input format is
configured via the "VM[3:0]" bits.
Video signal detection flag. Set HIGH when 3
consecutive TRS are detected in the input video
signal.
Video input signal CRC error detection. Set HIGH
when a CRC error is detected in the input video
signal. This register is refreshed on every video
frame.
Video CRC insertion. When set HIGH, the Luma
and Chroma line CRC words are re-calculated
and inserted into the output video signal.
Video input format selection. See Table 2. Valid
when "VM_SEL" is HIGH.
External EXTH/EXTF input select. When set LOW,
the EXTH and EXTF pins are configured as
outputs. When set HIGH, the GS1503 will insert
TRS and Line Numbers based on signals input at
the EXTH and EXTF pins.
Scramble processing bypass select. When set
HIGH, the internal scrambler and NRZ(I) encoder
is bypassed.
NOTE: The status of the SCRBYPASS external pin
is not updated in this register. The value
programmed in this register is logical OR'd with
the SCRBYPASS external pin setting.
8-bit input selection. When set HIGH, the GS1503
will accept an 8-bit input video signal.
Descramble process bypass select. When set
HIGH, the internal SMPTE 292M descrambler is
bypassed.
NOTE: The status of the DSCBYPASS external pin
is not updated in this register. The value
programmed in this register is logical OR'd with
the DSCBYPASS external pin setting.
Video Field 2 switching line setting. Designates
the video switching point for field 2. The default
line number is 569, as defined by SMPTE 299M.
Video Field 1 switching line setting. Designates
the video switching point for field 1. The default
line number is 7, as defined by SMPTE 299M.
CRC error accumulation. Reports the
accumulated number of CRC errors in one video
frame.
Not used.
Illegal code re-mapping select. When set HIGH,
input video words between 000-003 are re-
mapped to 004, and values between 3FC-3FF are
re-mapped to 3FB. Valid only when "EXT_SEL" is
set HIGH.
Vertical blanking enable. When set HIGH, the
output video vertical blanking will be set to 040h
for the Luma channel and 200h for the Chroma
channel.
DESCRIPTION
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ADDRESS
000
001
002
003
004
005
006
007
008
BIT
3-0
4-0
7-0
4-0
7-0
3-0
7-0
7-5
7
6
5
4
3
2
1
0
4
3
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
-
DEFAULT
15879 - 4
569d
7d
0
0
0
1
0
0
0
0
0
0
0
0
0