Samsung VP-D353, Service Manual

Page: 139 / 168

Circuit Operating Description
Samsung Electronics 13-9
13-4-4 DV-1 Chip Block H/W demand matter
DV_1 CHIP BLOCK is AV I/F BLOCK to a CAMERA circuit or a VIDEO signal at the time of Record MODE.
Function . which inputs by ITU-R 656 FORMAT, SHUFFLING(s), and sends RECODING DATA by PREAMP
Block.
At the time of TAPE reproduction, PRML BLOCK to 41.5 Mhz PB_CLK and PB_DATA are inputted, and ECC
DECODING, DECOMPRESSION, and a DESHUFFLE function are carried out, and it is again inputted into the
CAMERA circuit BLOCK after output VIDEO DATA by ITU-R 656 FORMAT, and is with VIDEO Y/C SIGNAL
to AV I/F BLOCK. You have to carry out the DATA communication function which sent and carried out
IEEE1394 PROTOCOL EWI of AUDIO CLOCK/DATA.
DV1 CHIP
(GLOB ALi)
IC201
BU7806
(IC601)
IC-AUDIO I/F
NJM25 38
(IC301)
IC-VIDEO I/F
S5C7376X
(ICM01)
DSP6
LDV5000
(IC101)
IC-PRML
LD3502
(IC101)
IC-PREAMP
41.85MHz
TMP1962
(IC501)
MICOM
ITU-R656
54MHz/
27MHz
Y/C
CLK/DATA
TSB41AB 1
(IC204)
PHY. LAYER
54MHz
REC DATA
PB CLK/ DATA
Fig. 13-7 DV-1 Chip Block Diagram