Onkyo TX-7530 - Block Diagram of ICs

BLOCK DIAGRAM OF ICS
LC6568H-3643 (MICROPROCESSOR)
Terminal Descriptions
Pin No. | Terminal Description |
1 D1 These are the digit and key scan signal terminals.
2 D2 "H” when active.
3 D3
4 D4
5 D5
6 D6
7 D7
8 D&
9 DISPLAY Display output terminal.”H” when active.
10 KO These are the input terminal for key return signal <i
ll Kl source and diode matrix.”H” when active.
12 K2
13 K3
14 SD Auto stop signal input terminal.Auto tuning stops when this terminal becomes the high level.
15 STEREO This is the input terminal for detection of the stereo broadcast."L” when active.
16 PROTECT This is the detection terminal for protection circuit.The speaker relay turns off when this terminal
becomes the high level.
17 POWER OFF This is the input terminal for detection of the stoppage of electric current.”L” when the stoppage
of electric current.
18 RELAY This is the output terminal for control of the speaker relay.”L” when active.
19 SEL MUTE | This is the muting output terminal when the selector key is operated.”H” when active.
20 TU MUTE This is the output terminal for muting control of tuner section.”L” when active.
21 AUTO/MONO _| This is the AUTO/MONO switching output terminal. “L” when AUTO.
22 VDP These are the output terminal for control of video signal.
23 VCR
24 MUTING This is the output terminal for muting control. ‘““H” when active.
POWER This is the output terminal for power source.It is "H” for power on.
26 HB ON This is the output terminal for indication of HI-BLEND ON. “L” when active.
27 HB OFF This is the output terminal for indication of HI-BLEND OFF. ‘“L” when active.
28 DX This is the output terminal for indication of DX. ”L” when active.
29 LOCAL This is the output terminal for indication of LOCAL. ”L” when active.
30 | TEST Test terminal.Connect to the ground.
31 Vss __| Ground terminal.
32 osci Connect to the 4.00MHz ceramic oscillator.
33 OSC2
34 RES This is the input terminal for reset. "L” when active
35 PLL Connect to the terminal CE of PLL IC(LM700]).
36 DATA This is the serial data output terminal.Connect to the terminal DATA of PLL IC and terminal DI
| of analog switches. (LC7821/LC7823)
37 CLOCK This is the serial clock output terminal.Connect to the terminal CI of PLL IC and terminal CL of
1 analog switches.
38 SEL Connect to terminal SEL of analog switch(LC7821).
[39 SYSTEM IN This is the input terminal for system code. ”H” when active.
40 SYSTEM OUT | This is the input terminal for system code. "L” when active. _|
[al MONO This is the output terminal for indication of MONO. ”L” when active.
42 [AUTO This is the output terminal for indication of AUTO. ”L” when active.
43 NR ON This is the output terminal for indication of NR ON. “L” when active.
[a NR OFF This is the output terminal for indication of NR OFF. “L” when active.
45 VREF This is the input terminal for comparator reference voltage.
46 S IN This is the signal strength input terminal.
47 | vo This is the output terminal for comparator reference voltage.
48 | V1 This is the output terminal for comparator reference voltage.
49 | V2 | This is the output termina] for comparator reference voltage.
30 RF IN This is the input terminal for control of AGC. "H” when active.
[51 | VP Pull-down resistor connection terminal of FIP controller/driver.