Panasonic CQ-EN3781AD Service Manual ▷ View online
7.1. Main Block
IC301 : C2DBYY000255
Pin
No.
Port
I/O
Description
1
AVREF0
- Standard voltage input for A/D converter
2
AVSS
- GND for A/D-D/A converter (same as VSS port)
3
NC
- No connection
4
NC
- No connection
5
AVREF1
- Standard voltage input for D/A converter
6
NC
- No connection
7
NC
- No connection
8
IC
-
-
9
VDD
- Positive power supply terminal for interior
10 REGC
- Regulator output stable capacity connection
11 VSS
- GND potential for interior
12 X1
I
Oscillator connection for main clock
13 X2
O Oscillator connection for main clock
14 RESET
I
System reset input (H: operation mode L: reset)
15 XT1
-
-
16 XT2
- No connection
17 NC
- No connection
18 CD_
EJECT
I
CD eject detection signal input
19 MD_
EJECT
I
MD eject detection signal input
20 DRST
I
No connection
21 ILL_ CNT
I
ILL control signal (PWM)
22 PKB
I
PKB signal
23 REV
I
REV signal
24 NC
- No connection
25 HP_ON
- No connection
26 ILL
I
ILL signal
27 CD_RST
O CD deck reset signal
28 M_CAN_
TXD
O M_CAN sending data
29 M_CAN_
RXD
I
M_CAN receiving data
30 NC
- No connection
31 V_CAN_
TXD
O V_CAN sending data
32 V_CAN_
RXD
I
V_CAN receiving data
33 EVSS
- GND potential for exterior (same potential as
VSS)
34 EVDD
- Positive power supply for exterior (same
potential as VDD)
35 U1C-TXD O Data output for communication with U1C (UART
38.4Kbps)
36 U1C-RXD
I
Data input for communicaiton with U1C (UART
38.4Kbps)
38.4Kbps)
37 WDT_
CNT
O External WDT control signal
38 WDT_
CLK
O External WDT clock signal
39 NC(DDI)
- No connection
40 NC(DDO)
- No connection
41 NC(DCK)
- No connection
42 NC(DMS)
- No connection
43 NC
- No connection
44 NC
- No connection
45 NC
- No connection
46 SYS_
MUTE
O SYS mute control signal output
47 ASEL
- No connection
48 NAVI_ON
I
Signal for DOP navi connection detection
49 TEST_A
I
Non diver antenna detection terminal H: diver L:
non-diver
non-diver
Pin
No.
Port
I/O
Description
50 TEST_B
I
Terminal for STRG_SW detection for 04IT H: 06
stereo control L: 04
stereo control L: 04
51 NC
- -
52 AMP_ON
O Exterior amp power on signal
53 P_AMP_
MUTE
- No connection
54 P_AMP_
STBY
- No connection
55 HB_ON
O Hi blend on signal
56 MAIN_
CNT
O Main power control signal
57 NC
- No connection
58 NC
- No connection
59 TEST_R
XD
I
For debug (receiving)
60 TEST_TX
D
O For debug (sending)
61 MUTE_C
NT
O MUTE circuit power control signal
62 NC
- No connection
63 NC
- No connection
64 ANT+
O Antenna amp power on signal
65 MD_RST
- No connection
66 MD_ON
- No connection
67 NC
- No connection
68 NC
- No connection
69 NC
- No connection
70 NC
- No connection
71 SI
- No connection
72 SO
- No connection
73 SCK
- No connection
74 +B DET
I
+B power supply detection
75 ACC_
DET
I
ACC power supply detection
76 IGN_DET
I
IGN power supply detection
77-
102
NC
- No connection
103 BVSS
- GND for bus interface
104 BVDD
- Positive power supply for bus interface
105 NC
- No connection
106 NC
- No connection
107 NC
- No connection
108 NC
- No connection
109 NC
- No connection
110 FLMD1
I
Operation mode setting 2
111
-
128
NC
- No connection
129 STSW_A
I
Steering switch signal input
130 STSW_B
I
Steering switch signal input
131 ILL_DC
I
ILL_CONT signal; DC value signal (analog
input)
input)
132 INITIAL_
A
I
Terminal A for model discrimination
133 INITIAL_
B
I
Terminal B for model discrimination
134 INITIAL_
C
I
Terminal C for model discrimination
135 NC
- No connection
136 NC
- No connection
137 NC
- No connection
138 NC
- No connection
139 INITIAL_
D
I
Terminal D for model discrimination
140 INITIAL_
E
I
Terminal E for model discrimination
7 TERMINALS DESCRIPTION
9
NISSAN / CQ-EN3781AD
Pin
No.
Port
I/O
Description
141 INITIAL_
F
I
Terminal F for model discrimination
142 KEY_A
I
Terminal for panel swith jig
143 KEY_B
I
Terminal for panel swith jig
144 KEY_C
I
Terminal for panel swith jig
7.2. Sub Block
IC100 : C1EB00000087
Pin No.
Port
I/O
Description
D16
FM_DI
-
No connection
C16
FM_CE
-
No connection
B16
FM_CL
-
No connection
A16
FM_DO
I
-
C15
NFM_INT
I
-
D15
NSD_ACREQ
-
No connection
B15
SD_ACCLK
-
No connection
B14
SD_ADATA
O
Head phone mute
C14
SD_ACVALID
-
No connection
D14
SD_ACCNT
-
No connection
D12
SD_CLK
O
(SD Jig)
B13
SD0_D0
I/O (SD Jig)
C13
SD0_D1
I/O (SD Jig)
D13
SD0_D2
I/O (SD Jig)
E13
SD0_D3
I/O (SD Jig)
A12
SD0_CMD
I/O (SD Jig)
B12
SD0_WP
I
(SD Jig)
C12
NSD0_CD
I
(SD Jig)
B10
SD1_D0
I
For writing C_TDI CPLD
C10
SD1_D1
-
No connection
D10
SD1_D2
-
No connection
B9
SD1_D3
-
No connection
D11
SD1_CMD
I
TC (Factory inspection input)
C11
SD1_WP
O
NTSC Control
B11
NSD1_CD
-
No connection
C9
NUART0_RI
O
CDON
D9
NUART0_DCD
-
No connection
E9
NUART0_DTR
-
No connection
A8
NUART0_DSR
-
No connection
B8
NUART0_RTS
-
No connection
C8
NUART0_CTS
-
No connection
D8
UART0_TX
O
NBUS serial data sending
B7
UART0_RX
I
NBUS serial data receiving
C7
UART1_TX
O
CAN uCOM serial data sending
D7
UART1_RX
I
CAN uCOM serial data receiving
C6
NUSART0_RTS
O
CDMUTE reserved pin
D6
NUSART0_CTS
O
CDSW1
(for
disc
detection)
reserved pin
B5
USART0_TX
O
CD_SIM (CD serial data sending)
C5
USART0_RX
I
CD_SOM (CD serial data receiving)
A4
USART0_SCK
O
CD_SCK (CD serial communication
clock)
clock)
B4
USART1_TX
-
No connection
D5
USART1_RX
-
No connection
C4
USART1_SCK
-
No connection
A2
USART2_TX
-
MD_SIM (MD serial data sending)
B3
USART2_RX
I
MD_SOM
(MD
serial
data
receiving)
A1
USART2_SCK
O
MD_SCK
(MD
serial
communication clock)
C3
USART3_TX
O
DISPTXD
(Visual
serial
data
sending)
D4
USART3_RX
I
DISPRXD
(Visual
serial
data
receiving)
B2
USART3_SCK
I
NBUSREQ1
B1
USART4_TX
-
No connection
C2
USART4_RX
I
RDS_DATA1
Pin No.
Port
I/O
Description
C1
USART4_SCK
I
RDS_CLK1
A23-22
VCC
-
-
A20-19
VCC
-
-
E23-21
GND
-
-
D21
GND
-
-
A18, 17
VCC
-
-
A14,13
VCC
-
-
A11
VCC
-
-
E19-16
GND
-
-
E14
GND
-
-
A9
VCC
-
-
E8-5
VCC
-
-
E12
GND
-
-
E10
GND
-
-
A6, 5, 3
GND
-
-
L29
UM_INIT
O
TP (SDRAM)
C27
NUM_CAS
O
SDRAM
A27
NUM_CS0
O
SDRAM
C26
NUM_CS1
-
No connection
B25
NUM_RAS
O
SDRAM
D27
NUM_WE
O
SDRAM
C29
UM_BUP
I
-
B27
UM_CKE
O
SDRAM
A29
UM_CLK
O
SDRAM
D22
UM_DQM0
O
SDRAM
B23
UM_DQM1
O
SDRAM
F27
UM_DQM2
O
SDRAM
F28
UM_DQM3
O
SDRAM
E29
UM_A00
O
SDRAM
B29
UM_A01
O
SDRAM
A28
UM_A02
O
SDRAM
D29
UM_A03
O
SDRAM
B28
UM_A04
O
SDRAM
D28
UM_A05
O
SDRAM
C25
UM_A06
O
SDRAM
B26
UM_A07
O
SDRAM
D23
UM_A08
O
SDRAM
C23
UM_A09
O
SDRAM
E28
UM_A10
O
SDRAM
E27
UM_A11
O
SDRAM
B24
UM_A12
-
No connection
C24
UM_A13
O
SDRAM
C28
UM_A14
O
SDRAM
B17
UM_D00
I/O SDRAM
D17
UM_D01
I/O SDRAM
D18
UM_D02
I/O SDRAM
C18
UM_D03
I/O SDRAM
D19
UM_D04
I/O SDRAM
C20
UM_D05
I/O SDRAM
B21
UM_D06
I/O SDRAM
B22
UM_D07
I/O SDRAM
C22
UM_D08
I/O SDRAM
C21
UM_D09
I/O SDRAM
D20
UM_D10
I/O SDRAM
B20
UM_D11
I/O SDRAM
C19
UM_D12
I/O SDRAM
B19
UM_D13
I/O SDRAM
B18
UM_D14
I/O SDRAM
C17
UM_D15
I/O SDRAM
L28
UM_D16
I/O SDRAM
K27
UM_D17
I/O SDRAM
L26
UM_D18
I/O SDRAM
J28
UM_D19
I/O SDRAM
H27
UM_D20
I/O SDRAM
H29
UM_D21
I/O SDRAM
G27
UM_D22
I/O SDRAM
10
NISSAN / CQ-EN3781AD
Pin No.
Port
I/O
Description
G26
UM_D23
I/O SDRAM
F29
UM_D24
I/O SDRAM
G29
UM_D25
I/O SDRAM
H26
UM_D26
I/O SDRAM
H28
UM_D27
I/O SDRAM
J29
UM_D28
I/O SDRAM
J27
UM_D29
I/O SDRAM
K28
UM_D30
I/O SDRAM
L27
UM_D31
I/O SDRAM
T25
VCC
-
-
AA25
VCC
-
-
V25
VCC
-
-
R25
VCC
-
-
AA26
GND
-
-
V26
GND
-
-
T26
VSS
-
-
R26
GND
-
-
G25
VCC
-
-
F25
VCC
-
-
E25
VCC
-
-
D25
VCC
-
-
A26
VCC
-
-
A25
VCC
-
-
J26
GND
-
-
G28
GND
-
-
F26
GND
-
-
E26
GND
-
-
D26
GND
-
-
E24
GND
-
-
AC27
DPLL_OUT
-
No connection
AC29
NDPLL_VTR
I
12S 6-CD Changer
AB26
DPLL_LOCDET
O
-
AB29
DPLL_CLK
-
No connection
AB28
DOT_CLK
I
DPLLCLK
AC28
DCLK_SEL
I
-
Y26
CNT0_CLKIN
-
No connection
AA28
NCNT0_HSOUT
-
No connection
Y25
CNT1_CLKIN
-
No connection
AA27
NCNT1_HSOUT
O
DCK_SEL (Visual) for controlling
the clock oscillation stop)
the clock oscillation stop)
Y27
NHSYNC_IN
I
HSYNC (Visual)
Y28
VIU_FIELDIN
O
RGB_CONT (Visual)
Y29
UVIU_VSIN
-
No connection
W27
NVIU_HSIN
-
No connection
W28
VIU_CLKENB
I
CAMERA_DET
(for
camera
control)
W29
VIU_VICLK
O
VSYNC_SEL
T28
VIU_D0
-
No connection
T27
VIU_D1
-
No connection
U29
VIU_D2
-
No connection
U28
VIU_D3
-
No connection
U27
VIU_D4
-
No connection
V29
VIU_D5
-
No connection
V28
VIU_D6
I
DSP_INIT (notice signal that DSP
is initialized)
is initialized)
V27
VIU_D7
O
DSP_RESET
AB25
NROMKILL
I
NROMKILL
R28
NWDTKILL
-
No connection
AB27
TEST0
I
1KPD (for ICE switching)
AA29
TEST1
I
GND (for ICE switching)
T29
SDA
I/O SDA (I2C Tuner/DSP)
R27
SCL
I/O SCL (I2C Tuner/DSP)
R29
AUDATA0
I
10KPU
P29
AUDATA1
I
10KPU
P28
AUDATA2
-
No connection
P27
AUDATA3
-
No connection
Pin No.
Port
I/O
Description
N29
NAUDSYNC
-
No connection
N28
AUDCK
O
-
N27
NASEBRKAK
I/O TP (E10A)
N26
TDO
O
TP (E10A)
N25
TDI
I
TP (E10A)
M29
TMS
I
TP (E10A)
M28
TCK
I
TP (E10A)
M27
NTRST
I
TP (E10A)
U25
VBB
-
GND
U26
VBB_ENB
-
GND
W5
VCC_CPG
-
10PU
W4
VSS_CPG
-
GND
AC26
VCC_PLL1
-
10PU
AD29
GND_PLL1
-
GND
AD27
VCC_PLL2
-
10PU
AD28
GND_PLL2
-
GND
Y5
VCC_SH_PLL1
-
10PU
AA1
VSS_SH_PLL1
-
GND
Y3
VCC_SH_PLL2
-
10PU
Y4
VSS_SH_PLL2
-
GND
AE12
VCC
-
-
AE14
VCC
-
-
AF25
VCC
-
-
AJ11
GND
-
-
AF14
GND
-
-
AE24
VSS
-
-
AF16
GND
-
-
AE16
VCC
-
-
AJ19
VCC
-
-
AJ21
VCC
-
-
AJ23
VCC
-
-
AJ25
VCC
-
-
AE18
GND
-
-
AE20
GND
-
-
AE22
GND
-
-
AE23
GND
-
-
AE25
GND
-
-
M25
VCC
-
-
L25
VCC
-
-
J25
VCC
-
-
H25
VCC
-
-
R5
GND
-
-
U5
GND
-
-
W2
GND
-
-
M26
GND
-
-
K29
GND
-
-
AJ17
A00
-
No connection
AG16
A01
O
(Flash)
AH16
A02
O
(Flash)
AH15
A03
O
(Flash)
AG15
A04
O
(Flash)
AH14
A05
O
(Flash)
AG14
A06
O
(Flash)
AJ13
A07
O
(Flash)
AF13
A08
O
(Flash)
AE13
A09
O
(Flash)
AG12
A10
O
(Flash)
AF12
A11
O
(Flash)
AH11
A12
O
(Flash)
AH10
A13
O
(Flash)
AH17
A14
O
(Flash)
AJ16
A15
O
(Flash)
AJ15
A16
O
(Flash)
AJ14
A17
O
(Flash)
AH13
A18
O
(Flash)
AG13
A19
O
(Flash)
11
NISSAN / CQ-EN3781AD
Pin No.
Port
I/O
Description
AJ12
A20
O
(Flash)
AH12
A21
O
(Flash)
AG11
A22
O
(Flash)
AF11
A23
O
MODE2 (Flash)
AF10
A24
O
MODE1 (Flash)
AG10
A25
O
MODE0 (Flash)
AG25
D00
I/O (Flash)
AH25
D01
I/O (Flash)
AF24
D02
I/O (Flash)
AG24
D03
I/O (Flash)
AF23
D04
I/O (Flash)
AH23
D05
I/O (Flash)
AF22
D06
I/O (Flash)
AH22
D07
I/O (Flash)
AF21
D08
I/O (Flash)
AH21
D09
I/O (Flash)
AF20
D10
I/O (Flash)
AJ20
D11
I/O (Flash)
AG19
D12
I/O (Flash)
AG18
D13
I/O (Flash)
AH18
D14
I/O (Flash)
AG17
D15
I/O (Flash)
AH26
D16
-
No connection
AJ26
D17
-
No connection
AH24
D18
-
No connection
AJ24
D19
-
No connection
AG23
D20
-
No connection
AG22
D21
-
No connection
AG21
D22
-
No connection
AG20
D23
-
No connection
AH20
D24
-
No connection
AE19
D25
-
No connection
AF19
D26
-
No connection
AH19
D27
-
No connection
AF18
D28
-
No connection
AJ18
D29
-
No connection
AE17
D30
-
No connection
AF17
D31
-
No connection
H1
VDD
-
-
M1
VDD
-
-
U1
VDD
-
-
J5
VSS
-
-
N5
VSS
-
-
T5
VSS
-
-
K25
VDD
-
-
A24
VDD
-
-
A21
VDD
-
-
K26
VSS
-
-
D24
VSS
-
-
E20
VSS
-
-
A15
VDD
-
-
A10
VDD
-
-
A7
VDD
-
-
E15
VSS
-
-
E11
VSS
-
-
B6
VSS
-
-
P25
VDD
-
-
W25
VDD
-
-
P26
VSS
-
-
W26
VSS
-
-
AB3
SPD_IN
I
SPD (vehicle speed)
AB4
AD_DT
I
-
AC2
NAD_CS
-
No connection
AB5
AD_CK
-
No connection
AD2
XTAL_12M
I
GND
AD1
EXTAL_12M
-
No connection
Pin No.
Port
I/O
Description
AF2
XTAL_16M
I
GND
AF1
EXTA_16M
-
No connection
AJ4
XTAL_48M
I
GND
AH4
EXTA_48M
-
No connection
Y2
XTAL_SYS
I
XL
Y1
EXTAL_SYS
O
XL
W3
SYS_CLK
-
No connection
AD4
AC97_BCLK
-
No connection
AC5
NAC97RST
I
CD_LRCK (I2S-6CD Changer)
AC3
AC97_SDI
I
CD_BCLK (I2S-6CD Changer)
AE2
AC97_SD0
-
No connection
AD5
AC97_SYNC
-
No connection
AG1
VCI_MCLK
-
No connection
AF3
VCI_SCK
-
No connection
AG3
VCI_LRCK
-
No connection
AF4
VCI_DATA
-
-
AJ1
VCO_SCK
-
No connection
AH1
VCO_LRCK
-
No connection
AG2
VCO_DATA
-
No connection
AE6
USB0_0VC
I
-
AH5
USB_PENC
-
No connection
AE7
USB0_HP
I/O
-
AF6
USB0_HM
I/O
-
AH7
USB1_OVC
I
-
AF8
USB1_PENC
-
No connection
AG7
USB1_HP
I/O
-
AF7
USB1_HM
I/O
-
AG4
NWE0
O
-
AH3
NWE1
-
No connection
AJ2
NWE2
-
No connection
AH2
NWE3
-
No connection
AG8
NCS0
O
-
G3
NCS3
-
No connection
AF9
NCS4
-
No connection
G4
NCS5
-
No connection
AJ8
CKIO
-
No connection
AG9
NRD
O
FROM
AH9
NBS
-
No connection
AJ27
NRSTIN
I
Reset in
AG26
NRSTOUT
O
Reset out
AH27
NNMI
I
NMI in
AJ28
NRDY0
-
No connection
AJ29
NRDY1
-
No connection
AG27
NRDY2
O
-
AH29
R_OUT
O
Visual
AG28
G_OUT
O
Visual
AG29
B_OUT
O
Visual
AF27
CBU
O
GND
AD25
REXT
I
-
AF29
NVSYNC
I/O VSYNC
AE27
NHSYNC_OUT
-
No connection
AE28
NCSYNC_OUT
-
-
AE29
NODDF
I
GND
AC25
DISP
-
No connection
AD26
CDE
O
YS_IN (Visual)
AE8
VCCUSB1
-
-
AJ6
GNDUSB1
-
-
AJ5
VCCUSB0
-
-
AG6
GNDUSB0
-
-
AE26
VCCAA_DAC1
-
SW5V
AH28
VCCAA_DAC2
-
SW5V
AF28
VSSAA_DACL
-
PGND
AF26
VSSAA_DACR
-
PGND
AD3
VDD
-
-
AE3
VDD
-
-
AA3
VSS
-
-
AH6
VSS
-
-
12
NISSAN / CQ-EN3781AD
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