LG GWA-4164B Service Manual page 69

• Pin Function
No Symbol Description
1 LDO- Loading driver negative output
2 LDO+ Loading driver positive output
3 Vcc BTL pre and Loading power supply
4 ACTIN1 Actuator driver 1 input
5 ACTIN2 Actuator driver 2 input
6 TJMON monitor of chip temperature
7 BTHC Capacitor connection terminal for spindle
current bottom holding
8 SPV -S Spindle driver sense power supply
M
9 PGND1 Spindle driver power ground 1
10 PGND2 Spindle driver power ground 2
11 U Spindle driver output U
12 SPV 1 Spindle driver power supply 1
M
13 V Spindle driver output V
14 fin fin
15 PGND3 Spindle driver power ground 3
16 W Spindle driver output W
17 SPV 2 Spindle driver power supply 2
M
18 SPRNF Spindle driver current sense
19 HB Hall bias
20 HU+ Hall amp.U positive input
21 HU- Hall amp.U negative input
22 HV+ Hall amp.V positive input
23 HV- Hall amp.V negative input
24 HW+ Hall amp.W positive input
25 HW- Hall amp.W negative input
26 SPIN Spindle driver input
27 DGND PWM block pre-ground
No Symbol Description
54 ACO1+ Actuator driver 1 positive output
53 ACO1- Actuator driver 1 negative output
52 ACO2+ Actuator driver 2 positive output
51 ACO2- Actuator driver 2 negative output
50 ACO3+ Actuator driver 3 positive output
49 ACO3- Actuator driver 3 negative output
48 AV Actuator driver block power supply
M
47 ACTIN3 Actuator driver input 3
46 LDIN Loading driver input
45 AGND BTL driver block power ground
44 SPCNF Spindle driver feedback filter
43 FG Frequency generator output
42 Vc Reference voltage input
41 fin fin
40 SLO1+ Sled driver 1 positive output
39 SLO1- Sled driver 1 negative output
38 SLO2+ Sled driver 2 positive output
37 SLO2- Sled driver 2 negative output
36 SLGND Sled driver power ground
35 CTL2 Driver logic control 2 input
34 CTL1 Driver logic control 1 input
33 SLRNF2 Sled driver 2 current sense
32 SLRNF1 Sled driver 1 current sense
31 SLV Sled driver PowerMOS pre-supply
DD
30 SLIN2 Sled driver 2 input
29 SLIN1 Sled driver 1 input
28 DVcc PWM block control power supply
73