Sony Discman D-E440 - SECTION 6 DIAGRAMS; IC Terminal Explanations

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Pin No. Pin name I/O Description
1 – 3 SEG 12–14 O LCD segment signal output terminal.
4 FP26 – Not used (Open).
5 XRST– DSP O Reset output terminal.
6 AMUTE – HP O Audio mute output terminal.
7 XOE-ESP O ESP POWER ON control output.
8 C2PO FILTER O C2PO filter output.
9 DACLT–DAC I/O CPU serial data input, latch signal output (For DAC only).
10 C2POEN O C2PO signal control output. “ L ” : Stop “ H ” : Searching
11 TEOADJ – TEO O Tracking ADJ switch control output.
12 RMDAT–WRMT O Serial data output to LCD remote controller.
13 VLCD (GND) – Connect to ground.
14 VSS (GND) – Connect to ground.
15 NDLY (GND) – Connect to ground.
16 CHGON – PWR O Charge ON/OFF control output.
17 PCON–PWR O Power ON/OFF control output. “ L ” : ON “ H ” : OFF
18 XMCRST–PWR I System reset input terminal.
19 OSC 1 I System clock oscillator input terminal (4.1943 MHz).
20 OSC 2 O System clock oscillator output terminal (4.1943 MHz).
21 SDT–ESP I Serial data input from ESP control (IC601).
22 SDT–ESP O Serial data output to ESP control (IC601).
23 SCK–ESP O Serial clock output to ESP control (IC601).
24 XBBSW – DBB O DBB switch control output.
25 XLT–ESP O Latch signal output to ESP control (IC601).
26 HOLD–SW I Hold switch input termianl. “ L ” : HOLD ON “ H ” : HOLD OFF
27 XLMT–MD I Limit switch input terminal. “ L ” : Inside Track
28 XRSM–SW I RESUME switch input terminal. “ L ” : ON “ H ” : OFF
29 WP XDC–DT PWR I DC in voltage detection terminal.
30 WP XOPEN–SW I Door open switch input terminal. “ L ” : Close “ H ” : Open
31 WP XPLAY–SW I Play/pause key input terminal.
32 WP RMKEY WRMT I Remote control key input terminal.
33 XL/O DCT I LINE OUT jack detection terminal. “ L ” : Present “ H ” : No
34 XRCHG–SW I Rechargeable battery detection terminal. “ L ” : Present “ H ” : No
35 XAVLS–SW I AVLS switch input terminal.
36 R/W DSP O Read/Write switching signal output terminal. “ L ” : Read “ H ” : Write
37 SDT–DSP I SUB–Q signal input terminal.
38 SDT–DSP O Serial data output to DSP (IC502) and D/A C (IC301).
39 SCK–DSP O Clock signal to enter SUB–Q signal to DSP (IC502) and D/A C (IC301).
40 FOK–RF I FOK signal input terminal.
41 BUSY–DSP I BUSY signal input terminal from DSP (IC502).
42 BEEP–H/P O Beep sound output terminal.
43 INT SCOR–DSP I Sub code sync SO+SI input terminal.
44 INT DFCT RF I Wireless remote control signal input.
45 VDD (VCPU) – Power supply terminal.
SECTION 6
DIAGRAMS
6-1. EXPLANATION OF IC TERMINALS
IC801 MC68HC05L15SC442718CPB (SYSTEM CONTROL)