Aiwa XR-FD55 Service Manual page 109

IC DESCRIPTION -3/3 (LR37816A -1/3)
Pin No. Pin Name
1 EFMMON
2 AVCC1
3 EFMI
4 AGND1
5 AVCC2
6 VREF
7 WBI
8 TCG
9 AIN
10 BIN
11 EIN
12 FIN
13 VBAT
14 VDD1
15 DGND
16 TEST2
17 X176KO
18 FODRF
19 FODRR
20 TRDRF
21 TRDRR
22 SLDRF
23 SLDRR
24 SPDRF
25 SPDRR
26 RAA3
27 RAA2
28 RAA1
29 RAA0
30 RAA10
31 VDD2
32 RAA4
33 RAA5
34 RAA6
35 RAA7
36 RAA8
37 RAOEX
38 DGND
39 RACASX
40 RAD2
41 RAD3
42 RAA9
43 RARASX
I/O
O EFM monitor output
- Analog power supply (EFM system 8AD and for 8DA)
I The EFM signal input from RF amplifier
- Analog GND
- Analog power supply (for servo system and ADIP system 1bit AD)
I The standard voltage input of RF amplifier
I ADIP wobble signal
I Track crossing signal
I Focal error signal A
I Focus error signal B
I Tracking error signal E
I Tracking error signal F
I The constant power supply voltage detected signal for voltage servo
- Internal digital power supply
- Digital GND
I The input for a test. Usually, it connects with GND at the time of use.
O Clock output. f=176.4KHz (4fs)
O Focus servo forward output. PWM.
O Focus servo reverse output. PWM.
O Tracking servo forward output. PWM.
O Tracking servo reverse output. PWM.
O Slide servo forward output. PWM.
O Slide servo reverse output. PWM.
O Spindle Servo forward output. PWM.
O Spindle Servo reverse output
O The address output to external D-RAM. ADR3
O The address output to external D-RAM. ADR2
O The address output to external D-RAM. ADR1
O The address output to external D-RAM. ADR0 (LSB )
O The address output to external D-RAM. ADR10 (MSB )
- The power supply for interfaces
O The address output to external D-RAM. ADR4
O The address output to external D-RAM. ADR5
O The address output to external D-RAM. ADR6
O The address output to external D-RAM. ADR7
O The address output to external D-RAM. ADR8
O The data output enable signal output to external D-RAM
- Digital GND
O The column address strobe signal output to external D-RAM
I/O Data input and output with Exterior D-RAM. D2
I/O Data input and output with Exterior D-RAM. D3 (MSB)
O The address output to external D-RAM. ADR9
O The row address strobe signal output to external D-RAM
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Description