Service manual
Pin Description
No Port Name I/O USE Sig. Name Act. Description
1 VREFL I - - - A/D VREFL.
2 AVSS I - - - A/D VSS
3 AVCC I - - - A/D VCC
4 NMI I NMI - - Pull Up
5 P70/TI0 I/O O POWER OFF L
6 P71/TO1 I/O O KILL IR H
7 P72/TO2 I/O O RC-5 OUT H
8 P73/TO3 I/O O SPEAKER OFF H SPK RELAY
9 P80/INT4/ I/O I RC-5 IN H Both Edge
10 P81/INT5/ I/O I SYNC0 H Rising Edge
11 P82/TO4 I/O I HEAD PHONE L
12 P83/TO5 I/O I - -
13 P84/INT6/ I/O I SURR. ACK L Both Edge
14 P85/INT7/ I/O I SYNC1 H Rising Edge
15 P86/TO6 I/O I MULTI RC-5 IN L
16 P87/INT0 I/O I POWER DOWN L
17 P90/TXD0 I/O TXD DO0 - I/F to SURR. uP
18 P91/RXD0 I/O RXD DI0 - I/F to SURR. uP
19 P92/SCLK0 I/O SCLK CLK0 - I/F to SURR. uP
20 P93/TXD1 I/O TXD DO1 - I/F to ICs
21 P94/RXD1 I/O RXD DI1 - I/F to ICs
22 P95/SCLK1 I/O SCLK CLK1 - I/F to ICs
23 AM8/_16 I - - - Pull Up
24 CLK O - - - Pull Up
25 VCC I - - - Pull Up
26 VSS I - - - to VSS
27 X1 I - - - 20MHz
28 X2 O - - - 20MHz
29 EA I - - - Pull Up
30 RESET I - - -
31 P96/XT1 I/O I - - to VSS
32 P97/XT2 I/O I - - to VSS
33 TEST1 I - - - to TEST2
34 TEST2 I - - - to TEST1
35 PA0 I/O O OSD ON0 H
36 PA1 I/O O OSD ON1 H
37 PA2 I/O O CLR LED L NJU3718 CLR
38 PA3 I/O O MULTI RC-5 OUT H
39 PA4 I/O O LARGE/SMALL L LARGE = L
40 PA5 I/O O SMUTE H
Act.: Active level
Fixed
No Port Name I/O USE Sig. Name Act. Description
41 PA6 I/O O SURR. RESET L
42 PA7/SCOUT I/O O SURR. REQ. L I/F to SURR. uP
43 ALE O - - - Pull Up
44 VCC I - - - to VCC
45 P00 I/O O CE(TUNER) H
46 P01 I/O O CLK(TUNER) -
47 P02 I/O O DO(TUNER) -
48 P03 I/O I DI(TUNER) -
49 P04 I/O I SD(TUNER) L
50 P05 I/O I DI(RDS) -
51 P06 I/O O - -
52 P07 I/O O - -
53 P10 I/O O - -
54 P11 I/O O - -
55 P12 I/O O - -
56 P13 I/O O - -
57 P14 I/O O - -
58 P15 I/O O - -
59 P16 I/O O - -
60 P17 I/O O - -
61 WDTOUT O - - - N.C
62 VSS I - - - to VSS
63 VCC I - - - to VCC
64 P20 I/O I FUNC. ENC. A -
65 P21 I/O I FUNC. ENC. B -
66 P22 I/O I VOL. ENC. A -
67 P23 I/O I VOL. ENC. B -
68 P24 I/O I GYRO A -
69 P25 I/O I GYRO B -
70 P26 I/O I - - to VSS
71 P27 I/O I - - to VSS
72 P30 I/O O CE0(AUDIO) H
73 P31 I/O O CE1(VIDEO) L
74 P32 I/O O CE2(VOLUME) H
75 P33 I/O O CE3(MUTE) L
76 P34 I/O O CE4(LED) L
77 P35 I/O O CE5(FL) L
78 P36 I/O O CE6(OSD) L
79 P37 I/O O CE7(OSD2) L
80 P40 I/O O (RESERVED) -
18
AIN1
6
REFERENCE
DIVIDER
PHASE DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4blt
1
24
15
14
3
4
5
16
X IN
XOUT
FM IN
1
2
AM IN
CE
DI
CL
DO
12blt PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER
LATCH
7
89
10
211
13
BO1
BO2 BO3 BO4 BO5
IO1
IO2
UNIVERSAL
COUNTER
12
17
20
19
23
V
SS
AOUT1
PD2
PD1
LC72130
IFIN
21
AIN2
22
AOUT2
UNLOCK
DETECTOR
CCB
I/F
V
DD
POWER
ON
RESET
39 40
QY01:TMP93CW40DF
Q501:LC72130
Q691:
µµ
µµ
µPD78018
Pin Description
No Port Name I/O USE Sig. Name Act. Description
1 P30/TO0 I/O I C0_E0 - DIR Status
2 P31/TO1 I/O I Ca_E1 - DIR Status
3 P32/TO2 I/O I Cb_E2 - DIR Status
4 P33/TI1 I/O I Cc_F0 - DIR Status
5 P34/TI2 I/O I Cd_F1 - DIR Status
6 P35/PCL I/O I Ce_F2 - DIR Status
7 P36/BUZ I/O O TEST_COM H For Check SIO0
Interface
8 P37 I/O I OLD_OVFB H keep in port for
SR880MK2
9 Vss I - GND - GND
10 P40 I/O O ISEL1 - SPDIF input select
11 P41 I/O O ISEL2 - SPDIF input select
12 P42 I/O O CSEL1 - SPDIF output select
13 P43 I/O O CSEL2 - SPDIF output select
14 P44 I/O O KILLC H Kill SPDIF output
15 P45 I/O O ATRF H Auto RF select
16 P46 I/O O RFSEL H RF select
17 P47 I/O O DIG_ANA - Digital/ Analog select
18 P50 I/O O SMUTE H Soft mute by DAC
19 P51 I/O O
_UMUTE
L Hard mute by Tr.
20 P52 I/O O FS96 H Fs=96k set
21 P53 I/O O BYPASS H Bypass DSP
22 P54 I/O O
_CS_DSP1
L I/F Q601 (main DSP)
23 P55 I/O O
_CSB_DSP1
L I/F Q601 (sub DSP)
24 Vss I - GND - GND
25 P56 I/O O
_SS_DSP2
L I/F Q651
26 P57 I/O O C_EF_DIR - DIR Status Out Select
27 P60 I/O O
_RSTRF
L Reset to PM4007
28 P61 I/O O ADCAL H Cal. to ADC
29 P62 I/O O _RSTDSP2 L Reset to Q651
30 P63 I/O O
_ATT3
L Attenuate to Bypass
31 P64 I/O O
_RSTDA1
L Reset to DAC
32 P65 I/O O _RSTDA2 L Reset to DAC
Act. : Active level , OPT : Option
No Port Name I/O USE Sig. Name Act. Description
33 P66/WAIT I/O O
_IC
L Reset to Q601
34 P67/ASTB I/O O RSTDIR H DIR Ch. Status Select
35
RESET
I I RSTC L I/F Master CPU
36 P00/INTP0 I I OVFB - Over load to DSP
37 P01/INTP1 I/O I _REQ L I/F Master CPU
38 P02/INTP2 I/O I ERF H SPDIF Error status
39 P03/INTP3 I/O I _RFNODET L RF input status
40 Vdd I - +5V - +5v
41 X2 O - - 10MHz
42 X1 I - - 10MHz
43 IC I - - - to GND
44 XT2 O - n.c. - Open
45 P04/XT1 I - n.c. - Vdd
46 Avss I - GND - GND
47 P10/ANI0 I/O ANI KEY1 - Optional 8 key input
48 P11/ANI1 I/O ANI KEY2 - Optional 8 key input
49 P12/ANI2 I/O ANI KEY3 - Optional 8 key input
50 P13/AMI3 I/O ANI KEY4 - Optional 8 key input
51 P14/ANI4 I/O I SWITCH1 - Link Host or Stand
alone
52 P15/ANI5 I/O I SWITCH2 - THX or Not
53 P16/ANI6 I/O I SWITCH3 - ADC or CODEC
54 P17/ANI7 I/O O PDAD - ADC Power Down
55 AVdd I - +5v - +5v
56 AVref I - +5v - +5v
57 P20/SI1 I/O I SI1 - I/F Master CPU
58 P21/SO1 I/O O SO1 - I/F Master CPU
59 P22/SCK1 I/O I SCK1 - I/F Master CPU
60 P23/STB I/O O _ACK L I/F Master CPU
61 P24/BUSY I/O O DEEMP - Pull Up
62 P25/SI0 I/O I SI0 - I/F Q601&Q651
63 P26/SO0 I/O O SO0 - I/F Q601&Q651
64 P27/SCK0 I/O O SCK0 - I/F Q601&Q651
VA+ FILT AGND MCK
SDATA
11
SCK
FSYNC
12
26
De-Multiplexer
Audio
Serial
Port
Confidence
Flag
CRC
check
RXP
RXN
VD+
DGND
R
e
g
i
s
t
e
r
s
Parity
Check
Frequency
Comparator
Error
Encoder
Channel
Status
Latch
Ca/
E1
C0/
E0
Ce/
F2
Cd/
F1
Cc/
F0
Cb/
E2
Multiplexer
Bi-phase
Decoder
and
Frame
Sync
Timing
M0M1M2M3
C
U
VERF
CBL
ERF
SEL
CS12/
FCK
22 20 21 19
9
10
7
8
13
16
6
5
4
32
27
25
15
28
14
1
17 18 24 23
Clock & Data
Recovery
33
6
6
1
2
3
4
5
6
7
8
9
10
11
12
28
27
26
25
24
23
22
21
20
19
18
17
13
14
16
15
C VERF
Cd/F1 Ce/F2
CS d/FREQ REPORT 1 CS e/FREQ REPORT 2
Cc/F0 SDATA
CS c/FREQ REPORT 0 SERIAL OUTPUT DATA
Cb/E2 ERF
CS b/ERROR CONDITION 2 ERROR FLAG
Ca/E1 M1
CS a/ERROR CONDITION 1 SERIAL PORT MODE SELECT 1
C0/E0 M0
CS 0/ERROR CONDITION 0 SERIAL PORT MODE SELECT 0
VD+ VA+
DIGITAL POWER ANALOG POWER
DGND AGND
DIGITAL GROUND ANALOG GROUND
RXP
FILT
RECEIVE POSITIVE FILTER
RXN MCK
RECEIVE NEGATIVE MASTER CLOCK
FSYNC
M2
FRAME SYNC SERIAL PORT MODE SELECT 2
SCK
M3
SERIAL DATA CLOCK SERIAL PORT MODE SELECT 3
CS12/FCK SEL
CHANNEL SELECT/FCLOCK FREQ/CS SELECT
U CBL
QR01:CS8414
5. IC DATA