Sharp SD-AT50H Service Manual page 50

SD-AT50H
IC301 RH-iX0563AWZZ: DSP System Microcomputer (IX0563AW) (2/3)
Pin No. Port Name
38 P60/CTS0/RTS0
39 P57/RDY/CLKOUT
40* P56/ALE
41 P55/HOLD
42* P54/HLDA
43* P53/BCLK
44* P52/RD
45* P51/WRH/BHE
46 P50/WRL/WR
47 P47/CS3
48 P46/CS2
49 P45/CS1
50 P44/CS0
51 P43/A19
52 P42/A18
53 P41/A17
54 P40/A16
55 P37/A15
56 P36/A14
57* P35/A13
58* P34/A12
59* P33/A11
60* P32/A10
61 P31/A9
62 VCC
63* P30/A8(/-/D7)
64 VSS
65* P27/A7(/D7/D6)
66 P26/A6(/D6/D5)
67* P25/A5(/D5/D4)
68* P24/A4(/D4/D3)
69* P23/A3(/D3/D2)
70 P22/A2(/D2/D1)
71 P21/A1(/D1/D0)
72 P20/A0(/D0/-)
73 P17/D15/INT5
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Terminal Name Input/Output
DSP_CS Input
DSP_RESET Output
N.C. Output
FLASH_EPM Input
DSP_UC15 Output
DSP_US16 Output
DSP_UC17 Output
N.C. Output
FLASH_CE Input
TIMER_LED Output
DD_LED Output
STD_LED Output
DTS_LED Output
SURR_LED Output
STEREO_LED Output
DPL_LED Output
B_LIGHT Output
VOL_DA Output
VOL_CL Output
N.C. Output
N.C. Output
N.C. Output
N.C. Output
TEST1 Input
VCC Input
N.C. Output
GND —
ROM Output
DSP_ABOOT Output
N.C. Output
N.C. Input/Output
L-MUTE Output
DIG_FUNC+B Output
BASS-SW Output
S_MUTE Output
NONPCM Input
DSP IC serial send/receive strobe output.
DSP IC RESET output.
Set it as an output terminal and fix it to Low since it is not used.
Connected to VSS via pull-down resistor.
(Setting for when writing on Flash) Functionally not used.
External ROM for DSP download program. Page select output.
External ROM for DSP download program. Page select output.
External ROM for DSP download program. Page select output.
Set it as an output terminal and fix it to Low since it is not used.
Connected to VCC via pull-up resistor.
(Setting for writing on Flash)
Timer stand-by LED control.
"H" output : LED on, "L" output : LED off
DOLBY DIGITAL IND.
"H" output : LED on, "L" output : LED off
Sound MODE STANDARD IND.
"H" output : LED on, "L" output : LED off
DTS IND.
"H" output : LED on, "L" output : LED off
Sound MODE STANDARD IND.
"H" output : LED on, "L" output : LED off
STEREO IND.
"H" output : LED on, "L" output : LED off
DOLBY PRO LOGIC IND.
"H" output : LED on, "L" output : LED off
LCD backlight circuit control output.
"H" : backlight ON, "L" : backlight OFF
Data latch output for the electron VOL IC control signal.
Output of the clock for the electron VOL IC control signal.
Set it as an output terminal and fix it to Low since it is not used.
Set it as an output terminal and fix it to Low since it is not used.
Set it as an output terminal and fix it to Low since it is not used.
Set it as an output terminal and fix it to Low since it is not used.
Input terminal for test. If it is "L" at RESET, it switches to a mode
where it operates separately without communicating with the
microcomputer.
Power supply input for this microcomputer. (3.3 V)
Backup power supply.
Set it as an output terminal and fix it to Low since it is not used.
Connected to GND (VSS).
Fixed to L.
Fixed to H.
Set it as an output terminal and fix it to Low since it is not used.
Set it as an output terminal and fix it to Low since it is not used.
Audio mute output of the VCR OUT.
H : MUTE OFF, L : MUTE ON
Power supply control output for external DIG. input.
External DIG. FUNC : "L" output, Others : "H" output
Output for controlling the gain of the SUBWOOFER amp.
"H" output : BASS OFF, "L" output : BASS ON.
System mute control output.
"L" output : mute ON, "H" output: mute OFF.
Input for detecting whether the AUDIO signal is PCM or not.
"L" : AUDIO PCM, "H" : NON AUDIO PCM.
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Function