GS1503B Gennum Corporation, GS1503B Datasheet - Page 45

• Manufacturer Part Number: GS1503B
• Description: Hd Embedded Audio Codec
• Manufacturer: Gennum Corporation

Table 4-33: Multiplex Mode Host Interface Registers (Continued)
Control
Item
CRC_CNT[11:0]
SW_LNB[12:0]
SW_LNA[12:0]
SCRBYPASS
DSCBYPASS
CRC_ERR
8BIT_SEL
LIMIT_ON
CRC_INS
EXT_SEL
VM[3:0]
Name
RSV
Description
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
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 GS1503B 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
GS1503B 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.
Proprietary and Confidential
Table
37953 - 0
4-1. Valid
Address
August 2006
000
000
000
001
001
001
001
002
003
004
005
006
007
008
008
Bit
7-5
4
GS1503B Data Sheet
3-0
4-0
7-0
4-0
7-0
3-0
7-0
5
4
3
2
1
0
R/W
–
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Default
0
0
45 of 88
569d
7d
0
1
0
0
0
0
0
0