Z8623012SSG Datasheet, PDF (32/61 Pages) Zilog, Inc. – ADVANCED PROGRAM BLOCKING AND NTSC LINE 21 XDS DECODER

CONTROL REGISTERS
REGISTERS SUMMARY
D₀-D₆. These bits hold the corresponding information recovered from the first
byte of the received Content Advisory Ratings packet.
D₇-B. This bit indicates the blocking status. When this bit is High, it indicates that
the data from the received Content Advisory packet matches the user selection
contained in one of the Content Advisory Ratings registers, and the PB pin is in
the blocking status.
6.1.12 Content Advisory Register 2
TABLE 23. CONTENT ADVISORY REGISTER 2 (ADDRESS = 0Dh)
Bit
7
6
5
4
3
2
1
0
P
1 (F)V S
L
g2
g1
g0
R/W
R
R
R
R
R
R
R
R
D₀-D₆. These bits hold the corresponding information recovered from the second
byte of the received Content Advisory Ratings packet.
D₇-P. This bit indicates the validity of the data in the recovered Content Advisory
packet. When this bit is High, it indicates that the data from the received Content
Advisory packet is valid. This bit clears if no Content Advisory packet is received
after 5 seconds.
6.1.13 Blocking Control Register 1
TABLE 24. BLOCKING CONTROL REGISTER 1 (ADDRESS = 0Eh)
Bit
7
6
5
4
3
2
BLEN
BTE
R/W
R/W R/W R/W R/W R/W R/W
1
R/W
0
R/W
D₀-D₆-BTE. These bits set the Block Timer which controls the duration of the hold
of the blocking signal on a change of channel. The default value of 0 has a hold
time of 2 seconds. The time is extended in 2 frames with each binary step.
D₇-BLEN. These bits enable the blocking capability. BLEN=0 enables blocking;
BLEN=1 disables blocking.
6.1.14 Content Advisory Ratings Select 5
This register holds the Canadian English Language Content Advisory selections
made by the viewer.
TABLE 25. CONTENT ADVISORY RATINGS SELECT REGISTER 5 (ADDRESS = 0Fh)
Bit
7
6
5
4
3
2
1
0
res 18+ 14+ PG
G C8+ C
E
R/W
R R/W R/W R/W R/W R/W R/W R/W
32
Z86230—PRELIMINARY
PS000401-TVC0699