Read Sony DVP-M35 / DVP-S300 / DVP-S305 / DVP-S315 / DVP-S500D / DVP-S505D / DVP-S715 Service Manual online
– 20 –
2-3. RF Signal Processing Block
The block is composed of the IC806 ARP (CXD1865R) and IC810 4Mbit DRAM (µPD424260)
of the MB-78 board.
In the case of the DVD, the ARP is input with the AGC and RF equalize-processed DVD-RF
signal at the IC006 analog front end (SSI33P3720) of the TK-47 board. In the case of the CD-
DA and video-CD, it is input with the CD-RF signal from IC005 of the TK-47 board.
In the ARP, first RF signal processing such as asymmetry correction, adaptive equalization, and
sync clock extraction by the RF-PLL are carried out so that the signal becomes binary data
synchronized with the PLL clock. This data is EFMPlus demodulated (DVD)/EFM demodulated
(CD-DA and video-CD) in the demodulator, subjected to frame/sector sync detection, address
detection, and protection, and sent to the buffer memory controller.
In the case of the DVD and video-CD, the ARP is linked to the ECC core, built-in and external
memories, and output controller to carry out error correction, descrambling, EDC detection,
navigation information detection (DVD only), and output data flow control, etc. The data output
in this way is then sent to the decrypt block in the next stage.
This is the same for the CDDA. The ARP is linked to the built-in and external memories, and
CDDA signal processing block to carry out error correction, output data flow control, etc. The
signal is then muted and corrected by the CDDA signal processing block, and then sent to the
IC203AV decoder (L64020).
For all of these disks, RF jitter is calculated by the RF signal processing block, and this
information is used for adaptive control of the servo DSP via the CPU.
Figure 2-9. MB-78 board RF processor, decrypt
96
|
99
•
101
|
104
1
•
3
•
74
|
77
•
79
•
80
62
•
64
|
66
•
68
|
71
90
|
94
106
|
109
4
|
8
56
•
58
|
61
10
12
DVD-RF
CD-RF
From TK-47 board
IC006
P
IC006
P
52
From TK-47 board
IC005
P
IC005
P
21
22
SDEF
SAK
SRQ
SD 0 – 7
SHD
SDCK
SPDIF
CD LRCK
CD BCK
CD DATA
98
99 101 102
To AV decoder IC203
, , ,
MA 0 – 8
IC806
CXD1865R
IC811
CXD1904G
ARP
DECRYPT
DCRSD 0 – 7
To AV decoder IC203
TOS
ERROR
AVALID
DCK
AREQ
ERROR
AVALID
DCK
AREQ
IC810
4M DRAM
µ
PD424260
MD 0 – 15
Click on the first or last page to see other DVP-M35 / DVP-S300 / DVP-S305 / DVP-S315 / DVP-S500D / DVP-S505D / DVP-S715 service manuals if exist.