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PIN DESCRIPTION
PIN No.
Name
Function
49
DATA
Input pin of control data
50
CLOCK
Input pin of control clock
Output pin of FL/FR/C/SW/SL/SR/SBL/SBR channel
FRIN2, FLIN2,
SRN2,SLIN2,
SWIN2,CIN2,
SBRIN2,SBLIN2
43,42,
41,40,
39,38,
37,36
Input pin of L/R/C/SW/SL/SR/SBL/SBR channel (Multi IN 1/2)
Output pin for L/R channel REC Output
Frequency characteristic setting pin of L/R channel tone control (Treble)
28,34
TREL, TRER
26,27,
32,33
23,21,
17,15,
11,9,
5,3
FROUT,FLOUT,
COUT,SWOUT,
SROUT, SLOUT,
SBROUT,SBLOUT
BASSL1,BASSL2
BASSR1,BASSR2
FLIN1, FRIN1,
CIN1,SWIN1,
SLIN1,SRIN1,
SBLIN1,SBRIN1
93,94,
95,96,
97,98,
99,100
Frequency characteristic setting pin of L/R channel tone control (Bass)
24,20,
18,14,
12,8,
6,2
FRC,FLC,
CC,SWC,
SRC,SLC,
SBRC,SBLC
Connects capacitor for reducing click noise of
L/R/C/SW/SL/SR/SBL/SBR channel volume
INL1,INL2, INL3,
INL4,INL5,INL6,
INL7,INL8,INL9
Input pin of L/R channel (Input Selector)
59,61,63,
65,67,69,
71,73,79
INR1,INR2, INR3,
INR4,INR5,INR6,
INR7,INR8,INR9
58,60,62,
64,66,68,
70,72,78
54,55
ADCL, ADCR
Output pin for L/R channel ADC
90,91
4,7,10,16,
19,22,56
AGND
Analog ground of internal circuit
30
AVCC
Positive power supply to internal circuit
48
DGND
Digital ground of internal circuit
52
AVEE
Negative power supply to internal circuit
46,47
SUBL,SUBR
Output pin for L/R channel SUB Output
RECR3,RECL3
51
MUTE
Outside Mute Control PIN
75,76,
81,82,
83,84,
85,86
INRA/RECR1,INLA/RECL1,
INRB/RECR2,INLB/RECL2,
INR10/RECR4,INL10/RECL4,
INR11/RECR5,INL11/RECL5
Input pin of L/R channel (Input Selector)/
Output pin for L/R channel REC Output
N.C.
1,13,25,29,31,
35,53,
57,74,77,80,
87,88,89,92
No Connected PIN
44,45
SBRCIN,SBLCIN
Input pin for SBL/SBR channel Volume
2-5
Summary of Contents for T 748
Page 1: ...L A U N A M E C I V R E S AV Surround Sound Receiver T748 AV Surround Sound Receiver T748 ...
Page 6: ...DISASSEMBLY REMOVAL OF FRONT PANEL 1 6 ...
Page 7: ...PRINCIPAL PART LOCATION 1 7 ...
Page 18: ...IC 211 MX29LV32DTTI 70G FLASH OF DSP 2 6 ...
Page 19: ...2 7 ...
Page 29: ...2 17 BLOCK DIAGRAM ...
Page 40: ...IC 913 IC 918 TC74VCX541FT OCTAL BUS BUFFER 2 28 ...
Page 44: ...BLOCK DIAGRAM MCU DSP PART 2 32 2 33 ...
Page 45: ...BLOCK DIAGRAM AUDIO PART 2 34 2 35 ...
Page 46: ...BLOCK DIAGRAM HDMI PART 2 36 2 37 ...
Page 62: ...2 68 2 69 PRINTED CIRCUIT BOARD FRONT TOP VIEW ...
Page 63: ...2 70 2 71 FRONT BOTTOM VIEW ...
Page 64: ...2 72 2 73 INPUT TOP VIEW ...
Page 65: ...2 74 2 75 INPUT BOTTOM VIEW ...
Page 66: ...2 76 2 77 MAIN TOP VIEW ...
Page 67: ...2 78 2 79 MAIN BOTTOM VIEW ...
Page 68: ...2 80 2 81 SUB TOP VIEW ...
Page 69: ...2 82 2 83 SUB BOTTOM VIEW ...