TX-DS797
MAIN MICROPROCESSOR
Terminal Descriptions
T
X
-D
S
79
7
No. Function
I/O Act.
Description
No.
Function
I/O
Act.
Description
8
BYTE
I
Input pin to change the width of external data bus. Connect to Vss.
52
ADR152
O
H
Signal output pin to control address 15 of flash memory for second DSP.
9
CNVSS
I
Input pin to change the processor mode. Connect to Vss.
53
ADR162
O
H
Signal output pin to control address 16 of flash memory for second DSP.
12 ~RESET
I
Reset pin of microprocessor
54
ADR172
O
H
Signal output pin to control address 17 of flash memory for second DSP.
13 XOUT
O
Output pin of main clock oscillator
55
DFSDAC
O
H
DAC sampling control output pin.
14 VSS
I
Ground pin
56
~DARST
O
L
Reset output pin for six channels DAC.
15 XIN
I
Input pin of main clock oscillator
57
~CODECPD
O
L
Reset output pin for CODEC IC.
16 VCC
I
Power supply pin. Apply 5V.
58
DFSCO
O
H
Sampling frequency control output pin for CODEC IC.
18 PRTCTV
I
H
Abnormal voltage/current detection input pin from protection circuit
62
VCC
I
Power supply pin. Apply 5V.
19 RDSSCK
I
CLK Modulator clock signal input pin from RDS decoder IC.
64
VSS
I
Power supply pin. Connect to ground,
20 ~POFF
I
L
Input pin from detection circuit of power failure
68
TRG12A
O
H
Output pin A to control the 12V trigger circuit.
21 ~PRTCTTHM
I
L
Input pin from thermal detector circuit.
69
TRG12B
O
H
Output pin B to control the 12V trigger circuit.
22 SEC1H
O
H
Output terminal to change voltage of main amplifier.
70
TRG12Z
O
H
Output pin to control the 12V trigger circuit of zone 2.
23 INT0
I
H
Input terminal from interrupter output of DIR IC.
71
SPRLZ2
O
H
Output pin to control the speaker relay of zone 2.
24 INT1
I
H
Output terminal to interrupter input of DIR IC.
72
SLRLF
O
H
Output pin to control the speaker relay.
25 (DSPWRITE)
I
L
Input port for check when DSP flash write.
73
POWER
O
H
Output pin to control the relay of power source.
26 DIGSO
O
H
Serial data output pin to DSP,DIR,DAC, nd Digital input ICs.
74
PLLCE
O
H
Latch data output pin to PLL IC.
27 DIGSI
I
H
Serial data input pin from DSP, and DIR ICs.
75
TUMUT
O
H
Muting control output pin for tuner block.
28 DIGSCK
O
CLK Serial clock output pin to DSP,DIR,DAC,Digital input ICs.
76
~SD
I
L
Signal detection input pin from tuner section.
29 ~INTRQ1
I
L
INTRQ input pin from DSP IC 2(CS49329)
77
~STEREO
I
L
Stereo broadcast detection input pin.
30 ~INTRQ2
I
L
INTRQ input pin from DSP IC 1(CS49300)
78
RDSDATA
I
H
Data input pin from RDS demodulator IC.
32 ~SUBRESET
O
L
Reset signal output pin to sub-microprocessor.
79
RDSSIG
I
H
Check signal input pin of RDS demodulator IC.
33 ~SUBPOFF
O
L
Output pin to connect to pin POFF of sub-microprocessor.
81
AMUT
O
H
Muting control output pin for audio circuit.
34 ~SUBREQ
I
L
Communication request input pin from sub-microprocessor.
82
Z2LMUT
O
H
Muting control output pin for line of zone 2.
35 MAINSO
O
H
Serial data output pin to sub-microprocessor.
83
Z2MUT
O
H
Muting control output pin for zone 2.
36 MAINSI
I
H
Serial data input pin from sub-microprocessor.
84
VPCLK
O
H
Serial clock output pin to electrical volume and PLL IC,
37 MAINSCK
O
CLK Serial clock output pin for communication of main and sub-microprocessors.
85
VPDATA
O
H
Serial data output pin to electrical volume and PLL IC,
38 ~MAINREQ
O
L
Communication request output pin of main microprocessor.
86
VSTB
O
H
Strobe output pin to electrical volume IC.
39 ~DIRCS
O
L
Chip select output pin of DIR IC,
87
TCS2
O
L
Chip select output pin to tone control IC of surround and center channels.
40 ~DIRRST
O
L
Reset signal output pin to DIR IC,
88
TCS1
O
L
Chip select output pin to tone control IC of front channel..
41
Writing port of flash memory IC.
89
TDATA
O
H
Serial data output pin to tone control IC.
42 ~DSPRST1
O
L
Reset signal output pin to DSP IC 2.
90
TCLK
O
CLK
Serial clock output pin to tone control IC.
43 ~DSPCS1
O
L
Chip select output pin to DSP IC 1.
91
FSTB
O
H
Strobe output pin to function switch ICs.
44 FMEM/SRAM1
O
H
Memory select output pin to RAM.
92
FDATA
O
H
Serial data output pin to function switch ICs.
45 ADR151
O
H
Signal output pin to control address 15 of flash memory for first DSP.
93
FCLK
O
CLK
Serial clock output pin to function switch ICs.
46
Port to write the flash memory IC.
94
HPMUT
O
H
Muting control output pin for headphone circuit.
47 ADR161
O
H
Signal output pin to control address 16 of flash memory for first DSP.
96
VSS
I
Power supply pin for A/D converter. Connect to ground.
48 ADR171
O
H
Signal output pin to control address 17 of flash memory for first DSP.
97
VOLH
I
H
Measurement input pin of main amplifier output.
49 ~DSPRST2
O
Ｌ
Reset output pin to DSP IC 2.
98
VREF
I
Reference voltage input pin for A/D converter.
50 ~DSPCS2
O
L
Chip select output pin to DSP IC 2.
99
VCC
I
Power supply pin for A/D converter. Apply 5V.
51 FMEM/SRAM2
O
H
2nd DSP memory select output pin.L=FLASH,H=SRAM
