Pioneer DVL-909 Service Guide - Page 34

VYW1536 DVDM ASSY : IC603DV-505 and DVL-909 only

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DV-505, DVL-909, DV-S9 VYW1536 (DVDM ASSY : IC603)(DV-505 and DVL-909 only) • Flash ROM • Block Diagram WE 43 BYTE 33 RESET 44 CE 12 OE 14 RY/BY 1 RY/BY BUFFER RY/BY ERASE CIRCUIT DQ0-DQ15 15-22, 24-31 INPUT/OUTPUT BUFFER CONTROL CIRCUIT WRITE CIRCUIT CHIP ENABLE STB OUTPUT ENABLE CIRCUIT DATA LATCH A0-A18 2-11, 34-42 A-1 31 LOW VCC DET. CIRCUIT STB WRITE/ERASE PULSE TIMER ADDRESS LATCH Y DECODER X DECODER Y GATE 8,388,608 CELL MATRIX • Pin Function No. Pin Name Function 1 RY/BY 2 A18 Ready / Busy output 3 A17 4 A7 5 A6 6 A5 7 A4 Address input 8 A3 9 A2 10 A1 11 A0 12 CE 13 VSS Chip enable Ground 14 OE 15 DQ0 Output enable 16 DQ8 17 DQ1 18 DQ9 19 DQ2 Data input/output 20 DQ10 21 DQ3 22 DQ11 34 No. Pin Name 23 VCC 24 DQ4 25 DQ12 26 DQ5 27 DQ13 28 DQ6 29 DQ14 30 DQ7 31 DQ15/A-1 32 VSS 33 BYTE 34 A16 35 A15 36 A14 37 A13 38 A12 39 A11 40 A10 41 A9 42 A8 43 WE 44 RESET Function Power supply (+5.0V ± 10% or ± 5%) Data input / output Data input/output / address input Ground Switch the 8 bit and 16 bit modes Address input Write enable Hardware reset

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34
DV-505, DVL-909, DV-S9
VYW1536 (DVDM ASSY : IC603)(DV-505 and DVL-909 only)
• Flash ROM
•
Block Diagram
•
Pin Function
RY/BY
BUFFER
RY/BY
WE
43
1
WRITE
CIRCUIT
STB
STB
ERASE
CIRCUIT
CHIP ENABLE
OUTPUT ENABLE
CIRCUIT
WRITE/ERASE
PULSE TIMER
LOW V
CC
DET. CIRCUIT
Y DECODER
ADDRESS LATCH
X DECODER
CONTROL
CIRCUIT
BYTE
RY/BY
33
RESET
44
CE
12
OE
14
A
0
-A
18
A
-1
31
2-11,
34-42
DQ
0
-DQ
15
15-22,
24-31
INPUT/OUTPUT
BUFFER
DATA LATCH
Y GATE
8,388,608
CELL
MATRIX
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