Pioneer VSX-72TXV, Service Manual

Page: 272 / 282

VSX-74TXVi
272
1 2 3 4
1 2 3 4
C
D
F
A
B
E
Pin Function
No. Mark Pin Name I/O Pin Function
1 VDD VDD
−
Positive power supply
2 P37 p_1w_wp O Main microcomputer start-up output corresponding to 1W
3 P36/BUZ p_gp_out_c_8 O General-purpose output (CMOS_8) for IR2SW (must be tied L)
4 P35/PCL p_xanteck O xantec correspondence L: set2 (PIONEER), H: set1 (others)
5 P34/TI2 p_gp_out_c_7 O General-purpose output (CMOS_7)
6 P33/TI1 p_input_r I MULTIJOG
7 P32/TO2 p_input_l I MULTIJOG
8 P31/TO1 p_vol_m I vol(-)
9 P30/TO0 p_vol_p I vol(+)
10 RESET xreset
−
Reset input
11 X2 X2
−
Connect a 5MHz crystal for X1 input clock oscillation
12 X1 X1 I
13 IC IC
−
14 XT2 XT2
−
15 P04/XT1 XT1 I Pull-down (100k)
16 VDD VDD
−
Positive power supply
17 P27/SCK0 p_gp_out_c_6 O General-purpose output (CMOS_6)
18 P26/SO0/SB1 p_gp_out_c_5 O General-purpose output (CMOS_5) ISO PHASE LED
19 P25/SI0/SB0 p_gp_out_c_4 O General-purpose output (CMOS_4) MCACC LED
20 P24/BUSY p_gp_out_c_3 O General-purpose output (CMOS_3)
21 P23/STB p_sys_rdy O RDY of Main microcomputer communication
22 P22/SCK1 p_sys_clk I CLK of Main microcomputer communication
23 P21/SO1 p_sys_do O Data output of Main microcomputer communication
24 P20/SI1 p_sys_di I Data input of Main microcomputer communication
25 AVSS GND
−
A/D converter GND, same electric potential as the EVSS/VSS.
26 P17/ANI7 p_gp_out_c_2 O General-purpose output (CMOS_2) DIGITAL PROCESSING LED
27 P16/ANI6 p_gp_out_c_1 O General-purpose output (CMOS_1) HDMI LED
28 P15/ANI5 p_gp_out_c_0 O
General-purpose output (CMOS_0) i.LINK(upper model),DVC (lower model) LED
29 P14/ANI4 p_test_checker I Test mode input for checker pull-down by 100K
30 P13/ANI3 p_key4 I Front key input (A/D)
31 P12/ANI2 p_key3 I Front key input (A/D)
32 P11/ANI1 p_key2 I Front key input (A/D)
33 P10/ANI0 p_key1 I Front key input (A/D)
34 AVDD VDD
−
Power supply
35 AVREF AVREF
−
Reference voltage input of A/Dconverter
36 P03/INTP3 p_232c_det I 232C signal detection A model without RS232C needs pull-up.
37 P02/INTP2 p_sys_cs I CS of Main microcomputer communication
38 P01/INTP1 p_mr_in I
Multi room remote control signal input A model without IR needs pull-up.
39 P00/INTP0/TI0 p_sr_in I Main room remote control signal input
40 VSS VSS
−
Ground
41 P74 p_gp_in_4 I General-purpose input 4 Pull-down to GND when does not use.
42 P73 p_gp_in_3 I General-purpose input 3 Pull-down to GND when does not use.
43 P72 p_gp_in_2 I General-purpose input 2 Pull-down to GND when does not use.
44 P71 p_gp_in_1 I General-purpose input 1 Pull-down to GND when does not use.
45 P70 p_gp_in_0 I General-purpose input 0 Pull-down to GND when does not use.
46 VDD VDD
−
Positive power supply
47 P127/FIP52 p_37s O FL drive
48 P126/FIP51 p_36s O FL drive
49 P125/FIP50 p_35s O FL drive
50 P124/FIP49 p_34s O FL drive