Onkyo TX-L55

TX-L55/LR552
Q7008:MPD78F4225GC (Main microprocessor)
TX-L55/LR552
No. Symbol Signal I/O Act. Description No. Symbol Signal I/O Act. Description
1 P15/ANI5 I No connection 41 P65/~WR I S video detection input pin
2 P16/ANI6 I No connection 42 P66/~WAIT I Not used
3 P17/ANI7 BAND I A/D Tuner frequency setting pin 43 P67/ASTB SELMUT O H Muting control output pin for Selector,Volume,and Tone IC BD3817
4 AVss Connect to Vss 0. 44 P30/TO0 SELCLK O CLK Serial Clock output pin for Selector,Volume and Tone IC BD3817
5 P130/ANO0 I No connection 45 P31/TO1 SELSDO O H Serial Data output pin for Selector,Volume,Tone IC BD3817.
6 P131/ANO1 I No connection 46 P32/TO2 ~DIRRST O L Reset output pin for DIR and CODEC IC AK4588.
7 AVref1 Connect to Vss 0. 47 P33/TI1 ~DIRCS O L Chip Select output pin for DIR/CODEC IC AK4588.
8 P70/SI2/RxD2 DSPSDI I H DSP CS49400, DIR/CODEC AK4588 and Serial Data input pin 48 P34/TI2 ~DSPFCS O L Chip Select output pin for DSP IC CS49400
9 P71/SO2/TxD2 DSPSDO O H DSP CS49400, DIR/CODEC AK4588 and Serial output pin 49 P35/TI00 ~DSPRST O L Reset output pin for DSP IC CS49400
10 P72/~SCK2/ASCK2 DSPCLK O CLK DSP CS49400,DIR/CODEC AK4588 and Serial Clock output pin 50 P36/TI01 ~DSPCS O L Chip Select output pin for DSP IC CS49400
11 P20/SI1/RxD1 MCSUP I H Transfer Serial Data input from sub-microprocessor 51 P37/EXA CONV O H Up Converter switch output pin
12 P21/SO1/TxD1 MCSDN O H Transfer Serial Data output to sub-microprocessor 52 P120/RTP0 SWDET I H Subwoofer channel detection input pin
13 P22/~SCK1/ASCK1 MCCLK O CLK Transfer Serial Clock output and Flash Serial Clock output pin 53 P121/RTP1 SLDET I H Surround left channel detection input pin
14 P23/PCL MCRDY I H Transfer Sub-microprocessor Data Ready detection pin 54 P122/RTP2 SBDET I H Surround back channel detection input pin
15 P24/BUZ FPHS O Flash Hand Shake pin 55 P123/RTP3 CDET I H Center channel detection input pin
16 P25/SI0 I2CDO/FPSI O H Control I2C bus Data and Flash Serial Data input pin 56 P124/RTP4 PAPOWER O H Voltage control output pin for power source of power amplifier
17 P26/SO0 FPSO O Flash Serial Data output pin 57 P125/RTP5 APRT I H Protection circuit detection input pin
18 P27/~SCK0 I2CCLK/FPCLK O CLK Control I2C bus clock and Flash Serial Clock output pin 58 P126/RTP6 SYSIN I H System code input pin
19 P40/AD0 ~MCRST O L Reset output pin to sub-microprocessor 59 P127/RTP7 SYSOUT O L System code output pin
20 P41/AD1 HPMUT O H Headphone Muting control output pin 60 ~RESET I L Reset input pin
21 P42/AD2 HPIN I H Headphone connection detection input pin 61 P00/INTP0 ~POFF I L Power failure detection input pin
22 P43/AD3 SPBRL O H Speaker B Relay control output pin 62 P01/INTP1 DIRINT1 I H DIR/CODEC AK4588 Interrupt input pin
23 P44/AD4 DETRL O H Speaker detection Relay control output pin 63 P02/INTP2 DIRINT0 I H DIR/CODEC AK4588 Interrupt input pin
24 P45/AD5 SPACSRL O H Center and Surround Relay control output pin for Speaker A 64 P03/INTP3 ~FINTREQ I L DSP CS49400 Interrupt Request input pin
25 P46/AD6 SPAFRL O H Front Relay control output pin for Speaker A 65 P04/INTP4 ~INTREQ I L DSP CS49400 Interrupt Request input pin
26 P47/AD7 POWRL O H Relay control output pin for Power source 66 P05/INTP5 ~RDSCLK I CLK RDS Clock input pin
27 P50/A8 SW1 O H Video Selector(NJM2595) Control output pin for SW1 67 Vss0
28 P51/A9 SW2 O H Video Selector(NJM2595) Control output pin for SW2 68 Vdd1
29 P52/A10 ~VMUT2 O L Video Output pin for muting 2 69 X2 X2 Ceramic oscillator connection pin (12.5MHz)
30 P53/A11 ~VMUT1 O L Video Output pin for muting 1 70 X1 X1 Ceramic oscillator connection pin (12.5MHz)
31 P54/A12 CMPRL O H Component video output select control output pin 71 TEST TEST/VPP Test pin and Vpp pin for flash writer
32 P55/A13 PLLSDI I H PLL Serial Data Input and IF count end detection pin 72 XT2 XT2 Not used.
33 Vss1 73 XT1 XT1 Not used.
34 P56/A14 AMUT O H Audio Muting control output pin 74 Vdd0
35 P57/A15 PLLSTB O H PLL Strobe output pin 75 AVdd Connect to Vdd2.
36 P60/A16 PLLSDO O H PLL Serial Data output pin 76 P10/ANI0 RDSDATA I H RDS Serial Data input pin
37 P61/A17 PLLCLK O CLK PLL Serial Clock output pin 77 P11/ANI1 RDSSIG I H RDS Signal input pin
38 P62/A18 TUMUT O H Tuner Muting output pin 78 P12/ANI2 INIT1 I A/D Initializing pin 1
39 P63/A19 ~SD I L Broadcast detection input pin 79 P13/ANI3 INIT2 I A/D Initializing pin 2
40 P64/~RD ~STEREO I L FM Stereo detection input pin 80 P14/ANI4 INIT3 I A/D Initializing pin 3
Power supply pin
Power supply pin
Power supply pin
Power supply pin