Sony Walkman MZ-E300 Service Manual page 16

MZ-E300
• IC801 RU6615MF-0003 (SYSTEM CONTROL)
Pin No. Pin name
1 UNREG_MON
2 RF_VCMON
3 RMC_KEY
4 SET_KEY
5 OPEN_CLS_SW
6 RF_SMON
7 DSP_SMON3_LP
8 VL_MON
9 XRESET
10 AVDD
11 AVSS
12, 13 TYPE0, 1
14 XADJUST
15 HOLD_SW
16 XOUT
17 XIN
18 HP_MUTE
19 HP_STBY
20 XCLK
21 VDD
22 VSS
23 DSP_WRQB
24 DSP_INTB
25 DSP_SMON3
26 DSP_CE
27 PWR_FFCLR
28 PWR_SLEEP
29 PWR_VLON
30 PWR_CLKSEL
31 SBUS_CLK
32 SBUS_DATA
33 PD_S1
34 SLD_1_MON
35 SLD_2_MON
36 CLV_VCON
37 SLD_VCON
38 VC_VCON
39 CLV_U_MON
40 VDD
41 VPP
42 CLV_V_MON
43 CLV_W_MON
44 CLV_U_CON
45 CLV_V_CON
16
I/O
I UNREG voltage monitor input (A/D input)
I Reference voltage (1.2V) for adjusting power supply voltage input (A/D input)
I Remote commander with phones key input (A/D input)
Key on the set itself input (A/D input) S801-807 (STOP, FF/PB, REW/PB, VOL+, VOL-,
I
PLAY MODE, DBB/AVLS key input
I Upper panel open/close detection switch (S808) input L: Close, H: Open
I S-MON level input from SN761057DBT (IC501) (A/D input)
— Not used (Fixed to L)
I VL voltage monitor input from XPC18A32FCR2 (IC901) (A/D input)
System reset signal input from XPC18A32FCR2 (IC901) (A/D input) L: Reset L is in
I
while 500-600 msec after power turns on, and then turns to H.
— Power supply (2.48V) (For A/D conversion)
— Ground (For A/D conversion)
I Initial setting for the model decision input (Bit 0, 1) Fixed to L.
I Test mode setting input L: Test mode (Fixed to H normally)
I HOLD switch (S809) input L: Off, H: On
O Main system clock (16.9344MHz) output
I Main system clock (16.9344MHz) input
O Muting on/off control signal output to phones amplifier (IC301) H: Muting on
O Standby on/off control signal output to phones amplifier (IC301) L: Standby, H: Amp. on
O Clock (16.9344MHz) output to LC89642-8B-E (IC601)
— Power supply (+2.1V) (Digital system)
— Ground (Digital system)
I SUBQ/ADIP read out request input from LC89642-8B-E (IC601) L: Request
I SPP, servo status read out request input from LC89642-8B-E (IC601) L: Request
I Monitor signal 3 input from LC89642-8B-E (IC601)
O Chip enable output to LC89642-8B-E (IC601) H: Enable
O Latch clear signal for start up signal to XPC18A32FCR2 (IC901) output H: Clear
O System sleep control signal to XPC18A32FCR2 (IC901) output H: Sleep on
O VL voltage control signal to XPC18A32FCR2 (IC901) output H: VL out on
External sync. 2 division circuit control signal to XPC18A32FCR2 (IC901) output L: 2
O
division, H: No division
O SSB serial clock signal output to SN761057DBT (IC501)
I/O SSB serial data signal input/output to SN761057DBT (IC501)
O PD-IC mode select signal output L: PIT, H: GRV
I Sled servo timing signal input from SC111257FCR2 (IC551)
I Sled servo timing signal input from SC111257FCR2 (IC551)
O Spindle servo drive voltage control signal output to SC111257FCR2 (IC551)
O Sled servo external voltage control signal output to SC111257FCR2 (IC551)
O PWM signal for VC voltage control signal to XPC18A32FCR2 (IC901) output
I Spindle servo (U) timing signal input from SC111257FCR2 (IC551)
— Power supply (+2.1V) (Digital system)
— Test (Fixed to L)
I Spindle servo (V) timing signal input from SC111257FCR2 (IC551)
I Spindle servo (W) timing signal input from SC111257FCR2 (IC551)
O Spindle servo (U) drive signal output to SC111257FCR2 (IC551)
O Spindle servo (V) drive signal output to SC111257FCR2 (IC551)
Description