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TERMINAL DESCRIPTION
MAIN MICROPROCESSOR
No. Terminal
1
PROTECT
2
VOLH
3
BAND
11 232TXD
12 232RXD
15 MCRDY
16 MCSDa
17 MCMDA
18 MCCLK
19 ~MCRST
20 HPMUT
21 HPIN
22 SPBRL
23 SEC1H
24 SPACSRL
25 SPAFRL
26 POWERRL
27 VCTRLA
28 VCTRLB
29 VMUT2
30 VMUT1
34 AMUT
35 PLLSTB
36 PLLSDO
37 PLLCLK
38 TUMUT
TE
L 13942296513
39 ~SD
40 ~STEREO
41 SELMUT
42 SELCLK
43 SELSDO
44 SNONE
45 SWNONE
46 CNONE
47 ~DIRCS
48 ~DSPCS
49 ~ROM/RAM
50 ADDR151
51 ADDR161
52 ADDR171
53 DSPCLK
54 DSPSDO
55 ~DSPRST
56 CDTO/SCDO
57 INT1
58 INT0
59 ~DIRPD
60 RESET
62 POFF
64
~INTREQ/~ABOOT
66 ~RDSCLK
69 X2
www
70 X1
71 TEST/VPP
72 XT2
73 XT1
.
76 RDSDATA
77 RDSSIG
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I/O Description
I
Protection circuit detection input terminal
I
Power amplifier voltage detection terminal.
I
Region setting input terminal.
Not used.
Not used.
I
Data ready detection input terminal from the sub microprocessor.
I
Data input terminal from the sub microprocessor.
O Data output terminal to the sub microprocessor.
O Serial clock output terminal to the sub microprocessor
O Reset signal output terminal to the sub microprocessor
O Muting control output terminal for headphone amplifier.
I
Input terminal to detect the connection of headphone
O Speaker B relay control output terminal.
O Voltage +/-B control output terminal.
O Speaker relay control output terminal for center and surround channels
O Speaker relay A control output terminal for front channels
O Power source relay control output terminal
O Control signal A output terminal for the video selector switch
O Control signal B output terminal for the video selector switch
O Muting control output terminal for the video section 2
O Muting control output terminal for the video section 1
O Audio muting control output terminal
O Strobe signal output terminal to PLL IC
O Serial data output terminal to PLL IC
O Serial clock output terminal to PLL IC
O Muting control output terminal for the tuner section
I
Broadcast detection input terminal more than a muting level.
I
FM stereo broadcast detection input terminal
O Muting control output terminal for selector, volume and tone IC BD3811.
O Serial clock output terminal of IC BD3811.
O Serial data and latch signal output terminal for IC BD3811
O Not used.
O Not used.
O Not used.
O Chip select signal output terminal to DIR IC AK4586
O Chip select signal output terminal to DSP IC.
O ROM/RAM select terminal. Not used.
O DSP boot ROM address 15 select terminal. Not used.
O DSP boot ROM address 16 select terminal.Not used.
O DSP boot ROM address 17 select terminal.Not used.
O Serial clock output terminal for DIR and DSP ICs.
O Serial data output terminal for DIR and DSP ICs.
O Reset signal output terminal to DSP IC.
I
Serial data input terminal from DIR and DSP ICs.
I
Input terminal to detect the status of DIR IC.
I
Input terminal to detect the unlock of DIR IC.
O Power down terminal to DIR and CODEC ICs.
I
Reset input terminal
I
Power failure detection input terminal
I/O Interrupter input terminal from DSP IC.
I
RDS clock input terminal.Not used.
Connect the ceramic oscillator 12.5MHz.
Connect the ceramic oscillator 12.5MHz.
Test terminal.
x
ao
u163
y
Not used.
Not used.
i
I
Data input terminal of RDS broadcast. Not used.
I
Input terminal to check the signal of RDS broadcast. Not used.
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2 9
8
Q Q
3
6 7
1 3
1 5
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.
9 4
2 8
0 5
8
2 9
9 4
2 8
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HT-R500
9 9
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