JVC XM-PX50WT Service Manual page 18

XM-PX50WT
2.Pin function (3)
Symbol I/O
Pin No.
U-9 VSIO1 -
T-9 A00 O
R-9 ADIO1 -
U-10 A08 O
T-10 A10 O
R-10 A07 O
U-11 IXOE O
T-11 XRAS O
R-11 A09 O
U-12 IXWE O
T-12 XCAS O
R-12 D1 I/O
U-13 D2 I/O
T-13 D0 I/O
R-13 VDC3 -
U-14 VSC3 -
T-14 D3 I/O
R-14 DVDD1 -
U-17 NC -
U-16 NC -
U-15 XOE O
T-17 NC -
T-16 TST6 O
T-15 A11 O
R-17 DVSS1 -
R-16 XWE O
R-15 PDO O
P-17 ASYI I
P-16 ASYO O
P-15 MVCI I
N-17 AVS1 -
N-16 BIAS I
N-15 AVD1 O
M-17 FILI I
M-16 PCO I
M-15 RFI I
L-17 PEAK O
L-16 CLTV I
L-15 FILO I
K-17 FE I
K-16 ABCD O
K-15 BOTOM I
J-17 ADIO I
J-16 VC -
J-15 AUX1 I
H-17 AVS2 -
H-16 ADRT I
H-15 AVD2 -
G-17 ADRB I
G-16 SE I
G-15 TE I
F-17 ADFG I
F-16 APC I
F-15 DCHG I
1-18
Function
2.5V I/O sel Vss
External DRAM address output
2.5V I/O sel VDD
External DRAM address output
External DRAM address output
External DRAM address output
Open
External DRAM RAS output
External DRAM address output
Open
External DRAM CAS output
External DRAM data input/output
External DRAM data input/output
External DRAM data input/output
Internal logic VDD
Internal logic GND
External DRAM data input/output
Internal 16Mbit DRAM VDD
Open
Open
External DRAM output chip enable output
Open
Open
Open
Internal 16Mbit DRAM GND
External DRAM write enable output
Analog PLL phase compare output
Playback EFM comparator slice level input
Playback EFM binarization signal output
Clock input from external VCO
Analog GND
Playback EFM comparator bias current input
Analog power supply (2.5V)
Filter input for playback EFM system mastering PLL
Phase comparison output for playback EFM system mastering PLL
Playback EFM RF signal input
Peak holding input optical amount signal
Internal VCO control voltage input for playback EFM system mastering PLL
Filter output for playback EFN system mastering PLL
Focus error signal input
Optical amount signal input
Bottom holding input of optical amount signal
Open
Middle point voltage input
Assistance A/D input
Analog GND
A/D converter operation range upper bound voltage input
Analog power supply (2.5V)
A/D converter operation range lower bound voltage input
Sled error input
Tracking error input
ADIP binary-coded FM signal input
Error signal input for laser digital APC
Connects with an analog power supply of low impedance