Onkyo HT-R820THX Service Manual page 61

MICROPROCESSOR TERMINAL DESCRIPTIONS-1
Q7008:MPD784225GC-XXX-8BT(MAIN MICROPROCESSOR)
No. Pin name I/O Description
1 PROTECT I Current detection and DC voltage detection
input terminal.
2 VOLH I Thermal detection and power amplifier
output level detection input terminal.
3 BAND I Input terminal for destination setup.
4 AVSS I Ground terminal.
5 THERMPRO I Thermal detection input terminal.
6 NU O Not used.
7 AVREF1 I Ground terminal for A/D converter.
8 DSPSDI Serial data input terminal from DSP and
I
DIR/CODEC.
9 DSPSDO O Serial data output terminal to DSP and
DIR/CODEC.
10 DSPCLK O Serial clock output terminal to DSP and
DIR/CODEC.
11 NU Not used.
O
12 NU O Not used.
13 NU O Not used.
14 PUREPOW O Power supply control terminal of video
circuit for Pure audio mode.
15 MCRDY I Data ready detection input terminal from
the sub microprocessor.
16 MCSDI I Data input terminal from the sub
microprocessor.
17 MCSDO O Data output terminal to the sub
microprocessor.
18 MCCLK O Serial clock output terminal to the sub
microprocessor.
19 ~MCRST O Reset signal output terminal to the sub
microprocessor.
20 HPMUT O Muting control output terminal for
headphone amplifier. Not used.
21 HPIN I Input terminal to detect the connection of
headphone.
22 SPBRL O Speaker relay control output terminal for front-B.
23 SEC1H O Control output terminal for power supply
voltage of power amplifier.
24 SPACSRL O Speaker relay control output terminal for
center and surround channels.
Speaker relay control output terminal
25 SPAFRL O
for front-A channels.
26 POWRL O Power source relay control output terminal.
27 VCTRLA O Control signal-A output terminal for the
video selector switch.
28 VCTRLB O Control signal-B output terminal for the
video selector switch.
29 ~VMUT2 Muting control-2 output terminal for the
O
video section.
30 ~VMUT1 O Muting control-1 output terminal for the
video section.
31 CMPRL O Control output terminal of component
video selector.
32 PLLSDI I PL serial data input terminal.
33 VSS1 I Ground terminal.
34 AMUT Audio muting control output terminal.
O
35 PLLSTB Strobe signal output terminal to PLL IC.
O
36 PLLSDO O Serial data output terminal to PLL IC.
37 PLLCLK O Serial clock output terminal to PLL IC.
O Muting control output terminal for the
38 TUMUT
tuner section.
No. Pin name I/O Description
39 ~SD I Broadcast detection input terminal more
than a muting level.
40 ~STEREO I FM stereo broadcast detection input terminal.
41 NU --- No used.
42 NU --- No used.
43 SELMUT O Muting control output terminal to selector/
volume/ tone IC BD3817.
44 SELCLK O Serial clock output terminal to selector/
volume/ tone IC BD3817.
45 SELSDO O Serial data output terminal to selector/
volume/ tone IC BD3817.
O Reset output terminal for DIR/CODEC.
46 ~DIRRST
47 ~DIRCS O Chip select output terminal for DIR/
CODEC.
48 ~DSPFCS O Chip select output terminal for DSP IC.
49 ~DSPRST O Reset output terminal for DSP IC.
50 ~DSPCS O Chip select output terminal for DSP IC.
51 NU --- Not used.
52 NU --- Not used.
53 NU --- Not used.
54 NU --- Not used.
55 NU --- Not used.
56 NU --- Not used.
57 NU --- Not used.
58 NU --- Not used.
59 NU Not used.
---
60 RESET I System reset input terminal.
61 ~POFF O Power failure detection input terminal.
62 DIRINT1 I Interrupt input terminal from DIR/
CODEC.
63 DIRINT0 O Interrupt input terminal from DIR/
CODEC.
64 ~FINTREQ I Interrupt request input terminal from
DSP IC.
65 ~INTREQ I Interrupt request input terminal from
DSP IC.
66 ~RDSCLK I RDS clock input terminal (European model
only)
67 VSS0 I Ground terminal.
68 VDD0 I Power supply terminal +5V.
69 X2 O Connect the ceramic oscillator 12.5MHz.
70 X1 I Connect the ceramic oscillator 12.5MHz.
71 TEST/VPP I Test terminal. Not used.
72 XT2 O Not used.
73 XT1 I Not used.
74 VDD0 I Power supply terminal +5V.
75 AVDD I Power supply terminal for A/D converter +5V.
76 RDSDATA I Data input terminal of RDS broadcast
(European model only)
77 RDSSIG I Input terminal to check the signal of RDS
broadcast (European model only)
78 INIT1 I Input terminal-1 for destination setup.
79 INIT2 I Input terminal-2 for destination setup.
80 INIT3 I Input terminal-3 for destination setup.
TX-SR502/E/8250/HT-R520