Loewe INDIVIDUAL SOUND PROJECTOR Service Manual page 46

IC26 : M30626FJPFP (DSP P.C.B)
16-bit Microprocessor
Pin No. Port
Definition I/O
1 PO96 Data output to FL driver
FL_TXD O
2 PO95 FL_CLK O Clock output to FL driver
PO94
3 I Pull down
4 PO93
I Pull down
5 PO92 O Serial data output
SDM
6 PI91 SDD I Serial data input
7 PO90
SCK O Clock output of serial port
8 BYTE GND
I
9 CNVSS CNVSS I Pull down (Normal mode), Pull up (Internal flash Rom writing mode)
10 PO87
/CSY O Chip select signal to EVE
11 PO86 Reset singnal to EVE
/ICY O
12 /RESET /RES I System reset input
XOUT
13 XO O 16MHz frequency clock output
14 VSS GND
VSS
15 XIN I 16MHz frequency clock input
XI
16 VCC VCC +3.3V
17 PI85
I Pull up
18 PI84 I Interrupt input from front-end DSP
/INTTIA
19 PI83 /INTDIR I Interrupt input from DIR
20 PI82
M_RXDO I Interrupt input from RS-232C
21 PI81 Vertical Syncronization Signal IN
I
22 PO80 O Terminated
23 PI77
TIA_MUTE O MUTE signal to front-end DSP
24 PO76 40kHz signal for FL filament
FL40KHz O
25 PO75 /TIA_BUSY I BUSY signal from front-end DSP
PO74
26 /TIA_RDY I READY signal from front-end DSP
27 PO73 READY signal from back-end DSP
I2C_RDY I
28 PO72 I2C_MUTE O MUTE signal to back-end DSP
PI71
29 I2C_SCL O I2C CLOCK signal to back-end DSP
30 PO70
I2C_SDA O I2C DATA signal to back-end DSP
RS-232C data output for μ-com flash writing
31 PO67 O
M_TXDO
RS-232C data input for μ-com flash writing
32 PI66 M_RXDO I
RS-232C clock output for μ-com flash writing
33 PO65
M_CLKO O
RS-232C BUSY output for μ-com flash writing
34 PO64
M_RTS O
35 PO63 M_TXDO O Data output to RS-232C
36 PI62
M_RXDO I Data input from RS-232C
37 PO61 Terminated
O
38 PO60 M_CTS O CTS output to RS-232C
PO57
39 O Terminated
40 PI56 Terminated
O
41 PI55 I Pull down
42 PO54 /CSDIR O Chip select signal to DIR
43 PO53
/CSTIA O Chip select signal to front-end DSP
44 PO52 O RESET signal to DIR
/ICDIR
45 PO51 /ICTIA O RESET signal to front-end DSP
46 PI50
I Pull up
47 PO47 Terminated
O
48 PO46 O Terminated
PO45
49 PW_RY O Power relay control signal
50 PO44 RESET signal to FL driver
FL_ON O
51 PO43 O Chip select signal to EEPROM
PI42
52 O Data signal to EEPROM
53 PO41
I Data signal from EEPROM
Function
IC26 : M30626FJPFP (DSP P.C.B)
16-bit Microprocessor
Pin No. Name Definition I/O
Clock signal to EEPROM
54 PO40 O
O Terminated
55 PO37
56 PO36 O Terminated
MUTE signal to DAC for Subwoofer
57 PI35 /DA1_MUTE O
/DA2_MUTE O MUTE signal to DAC for Woofer
58 PO34
59 PO33 O Terminated
60 PI32 D3_MUTEN O MUTE signal to D3 digital AMP
I Protection detection signal from D3 digital AMP
61 PO31 D3_PROTN
VCC +3.3V
62
63 PO30 /SW_MUTE O MUTE signal of Subwoofer
GND
64 VSS
OSD_TX O Data output to DSD driver
65 PO27
66 PO26 OSD_CE O Chip select output to DSD driver
Clock output to DSD driver
67 PO25 OSD_CLK O
D4_MODE O Power down signal to D4 digital AMP
68 PO24
69 PO23 /MIC_DET3 I MIC detection signal
Input select signal 1
70 PO22 IN_SEL1 O
I No use
71 PO21 SW_DET
PO20 O Terminated
72
73 -INT5 PW_DOEWN I Power down detection signal
I Standby switch input
74 -INT4 STBY_SW
-INT3 REMOTE I Remote control signal input
75
76 PO14 /WF_MUTE O Woofer MUTE signal
EVE MUTE signal
77 PO13 EVE_MUTE O
IN_SEL0 O Input select signal 0
78 PO12
79 PO11 NRESET O RESET signal to back-end DSP
Terminated
80 PO10 O
O Composite Mute
81 PO07 VOUT_MUTE
82 PO06 V_MUTE O Component Mute
83 PO05 V_SEL2 O Component Select-2
O Composite Select-1
84 PI04 V_SEL1
PI03 V_SEL0 O Composite Select-0
85
86 PO02 O Terminated
Terminated
87 PO01 O
O Terminated
88 PO00
89 A/D7 DEST I Selection of destination input
Voltage of power supply detection input
90 A/D6 VOL_DET I
+3.3_DET I +3.3V detection (Pull up)
91 A/D5
92 A/D4 I Pull down
Pull up
93 A/D3 TEMP I
I Key input 0
94 A/D2 KEY0
A/D1 KEY1 I Key input 1
95
96 AVSS GND
I Pull down
97 A/D0
VREF I +3.3V
98
99 AVCC I +3.3V
Chip select signal to FL driver
100 PO97 FL_CE
Key Input (A-D) Pull-Up Resistance 10 k-ohms
Ohm 0 k + 1.2k
V ~ 0.30 ~ 0.70
ADKEY 0 VOLUME
INPUT
94pin A/D2 +
ADKEY 1 VOLUME
–
95pin A/D1 -
SP-1
Function
45