cxd2589q Sony Electronics, cxd2589q Datasheet - Page 45

• Manufacturer Part Number: cxd2589q
• Description: Cd Digital Signal Processor
• Manufacturer: Sony Electronics

4-5. Digital Out
4-6. Servo Auto Sequencer
There are three Digital Out formats: 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 CXD2589Q 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 (bit 0 to 3)
of the channel status.
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 jumps, and N-track move are
executed automatically.
SSP (servo signal processor LSI) is used in an exclusive manner during the auto sequence execution (when
XBUSY = low), so that commands from the CPU are not transferred to the SSP, but can be sent to the
CXD2589Q.
Connect the CPU, RF and SSP as shown in Fig. 4-2.
When CLOK goes from low to high while XBUSY is low, XBUSY does not become high for a maximum of
100µs after that point. This is to prevent the transfer of erroneous data to the SSP when XBUSY changes
from low to high by the monostable multivibrator, which is reset by CLOK being low (when XBUSY is low).
176
16
32
48
0
Digital Out C bit
ID0
0
0
ID1 COPY Emph
From sub Q
0
1
2
0
0
3
0
0
4
0
0
5
0
0
6
Table 4-2.
– 45 –
0
0
Bits 0 to 3...Sub Q control bits that matched twice with CRCOK
Bit 29..........1 when VPON is 1
7
0
8
1
0
9
0
0
10
0
0
11
0
0
12
0
0
0/1
13
0
14
0
0
15
0
0
CXD2589Q