Samsung DSB-S300G Service Manual page 89

Circuit Operating Descriptions
ˇ
Block Diagram – 28F640J3
VCCQ
A(MAX:MIN Input Buffer
Address
Latch
Address
Counter
2) HDD
This saves the video files which are received from broadcasting and
MP3&JPEG files from external memory (USB Interface).
13-14
Output
Buffer
A(2:0)
Y-Decoder
X-Decoder
D(15:0)
Intput Buffer
Query
Identifier
Register
Status
Register
Multiplexer
Data
Comparator
Y-Gating
32-Mbit: Thirty-two
64-Mbit: Sixty-four
128-Mbit: One-hundred
twenty-eight
128-Kbyte Blccks
fig. 13-6
I/O Logic
CE
Commend
Logic
User
Interface
Write Shate
Program/Erase
Machine
Vdtage Switch
Samsung Electronics
VCC
BYTE#
CE0
CE1
CE2
WE#
OE#
RP#
STS
VPEN
VCC
GND