SAA7104E Datasheet, PDF (45/70 Pages) NXP Semiconductors – Digital video encoder

Philips Semiconductors
Digital video encoder
Product specification
SAA7104E; SAA7105E
Table 89 Subaddress D0H
DATA BYTE
HLCA
HLC
HLT
DESCRIPTION
RAM start address for the HD sync line count array; the byte following subaddress D0 points to the
first cell to be loaded with the next transmitted byte; succeeding cells are loaded by auto-incrementing
until stop condition. Each line count array entry consists of 2 bytes; see Table 90. The array has
15 entries.
HD line counter. The system will repeat the pattern described in ‘HLT’ HLC times and then start with
the next entry in line count array.
HD line type pointer. If not 0, the value points into the line type array, index HLT − 1 with the
description of the current line. 0 means the entry is not used.
Table 90 Layout of the data bytes in the line count array
BYTE
0
1
HLC7
HLT3
HLC6
HLT2
HLC5
HLT1
DESCRIPTION
HLC4
HLC3
HLT0
0
HLC2
0
HLC1
HLC9
HLC0
HLC8
Table 91 Subaddress D1H
DATA BYTE
HLTA
HLP
DESCRIPTION
RAM start address for the HD sync line type array; the byte following subaddress D1 points to the first
cell to be loaded with the next transmitted byte; succeeding cells are loaded by auto-incrementing
until stop condition. Each line type array entry consists of 4 bytes; see Table 92. The array has
15 entries.
HD line type; if not 0, the value points into the line pattern array. The index used is HLP − 1. It consists
of value-duration pairs. Each entry consists of 8 pointers, used from index 0 to 7. The value 0 means
that the entry is not used.
Table 92 Layout of the data bytes in the line type array
BYTE
0
1
2
3
DESCRIPTION
0
HLP12
HLP11
HLP10
0
0
HLP32
HLP31
HLP30
0
0
HLP52
HLP51
HLP50
0
0
HLP72
HLP71
HLP70
0
HLP02
HLP22
HLP42
HLP62
HLP01
HLP21
HLP41
HLP61
HLP00
HLP20
HLP40
HLP60
Table 93 Subaddress D2H
DATA BYTE
HLPA
HPD
HPV
DESCRIPTION
RAM start address for the HD sync line pattern array; the byte following subaddress D2 points to the
first cell to be loaded with the next transmitted byte; succeeding cells are loaded by auto-incrementing
until stop condition. Each line pattern array entry consists of 4 value-duration pairs occupying 2 bytes;
see Table 94. The array has 7 entries.
HD pattern duration. The value defines the time in pixel clocks (HPD + 1) the corresponding value
HPV is added to the HD output signal. If 0, this entry will be skipped.
HD pattern value pointer. This gives the index in the HD value array containing the level to be inserted
into the HD output path. If the MSB of HPV is logic 1, the value will only be inserted into the Y/GREEN
channel of the HD data path, the other channels remain unchanged.
2004 Mar 04
45