CXD3018Q/R
§4-5. Digital Out
There are three Digital Out: the type 1 format for broadcasting stations, the type 2 form 1 format for home use,
and the type 2 form 2 format for the manufacture of software.
The CXD3018Q/R supports type 2 form 1.
Sub Q data which are matched twice in succession after a CRC check are input to the first four bits (bits 0 to 3)
of the channel status.
When Mute = 1 in $AX commands, the previous value is held for the channel status.
Digital Out C bit
0
1
2
3
4
0
5
6
0
7
0
8
9
0
10
0
11
0
12
0
13
0
14
0
15
0
From sub Q
0
16
32
48
0
1
ID1
Emph
0
ID0
0
COPY
0
0
0
0
0
0
0
0
0
0
0
0/1
0
0
0
176
Bits 0 to 3 Sub Q control bits that matched twice with CRCOK
Bit 29
1 when VPON = 1
Table 4-5
§4-6. Servo Auto Sequence
This function performs a series of controls, including auto focus and track jumps. When the auto sequence
command is received from the CPU, auto focus, 1-track jump, 2N-track jump and N-track move are executed
automatically.
The commands which enable transfer to the CXD3018Q/R during the execution of auto sequence are $4X to
$EX.
When CLOK goes from low to high while XBUSY is low, XBUSY does not become high for a maximum of
100µs after that point.
– 69 –
ETC [ ETC ]
