Diagrams; Explanation Of Ic Terminals - Sony Walkman MZ-E300 Service Manual

5-1. EXPLANATION OF IC TERMINALS

• IC601 LC89642-8B-E
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO SIGNAL PROCESSOR, ATRAC ENCODER/DECODER,
8MBIT D-RAM, D/A CONVERTER)
Pin No. Pin name
1 FR
2 ISET
3 VCVDD
4 PDD
5 TEST3
6 TEST2
7 SLCO
8 SLCIST
9 EFMIN
10 RESETB
11 TEST1
12 HFL
13 VDD2
14 VSS
15 VDD1
16 AVSS1
17 PEAK
18 BOTTOM
19 ABCD
20 TE
21 FE
22 VC
23 AVDD1
24 MAD9
25 DSW1
26 MAD8
27 DSW0
28 MAD7
29 SGC
30 MAD6
31 AOFFSET
32 MAD5
33 FOFFSET
34 TOFFSET
35 MAD4
36 TBAL
37 LDREF
38 FBAL
39 VDD1
40 VSS
41 VDD2
42 MAD3
43 SPPWMF
44 SPPWMR
45 SLPWMF
SECTION 5

DIAGRAMS

I/O
I Connected to Bias resistor for VTEC oscillating frequency
I Connected to Bias resistor for VTEC current charge pump
— Power supply for VTEC
O VTEC current charge pump output
I Input for test
I Input for test
O Slice level output for HF signal
I Connected to Bias resistor for the slice level adjusting amplifier
I HF signal input
I System reset
I Input for test
I Track detection signal input
— Power supply
— Ground
— Internal power supply
— Ground for digital servo
I PEAK signal input
I BOTTOM signal input
I Main beam quantity signal input
I Tracking error signal input
I Focus error signal input
I Center potential input
— Power supply for digital servo
O* Address output to DRAM (NC)
O* Disc mode select output
O* Address output to DRAM (NC)
O* Disc mode select output
O* Address output to DRAM (NC)
O* AGC control signal output
O* Address output to DRAM (NC)
O* ABCD offset control signal output
O* Address output to DRAM (NC)
O* Focus offset control signal output
O* Tracking offset control signal output
O* Address output to DRAM (NC)
O* Tracking balance control signal output
O* Laser control signal output
O* Focus balance control signal output
— Internal power supply
— Ground
— Power supply
O* Address output to DRAM (NC)
O* Spindle PWM output
O* Spindle PWM output
O* Sled PWM output
Description
MZ-E300
13