Panasonic CQ-C8405N, Service Manual

Page: 13 / 48

IC901:YEAM30879FL
Pin
No. Port Description I/O (V)
1 UART_SS4 GND I 0
2 UART_SS3 GND I 0
3 D_DIS Disable for Anode drive
(Disable for image signal) O 4.7
4 PADJ2 Anode output pulse width adjusting
data 2(image data) O 4.7
5 DCLK_SLV3 Slave D-CLK 3
(Clock for image data) I 4.5
6 BUS_BYTE GND I 0
7 PMOD_CHG CPU rewrite mode/Single CPU mode
selection for Flash writer I 0
8 IADJ Anode output current adjusting
data(Luminance control) O 5
9 I_CLK Clock for anode output current
adjusting data O 5
10 RESET Reset for Main CPU I 4.6
11 XOUT Ceramic oscillator clock(8Mhz) O 3.7
12 GND GND _ 0
13 XIN Ceramic oscillator clock(8Mhz) I 3.7
14 VCC5_0V Power supply _ 5
15 NMI Pulled up to H I 5
16 Y_SYNC Cathode scan data and cathode
latch control (Vertical sync) O 4.7
17 ROTARY_A Volume-up detection from Rotary
encoder I 0
18 ROTARY_B Volume-down detection from Rotary
encoder I 0
19 X_SYNC Clock for Cathode scan ; or Latch
strobe for Anode output pulse
width adjusting data and Anode
output current adjusting data 4.7
20 A_CLK_TA Anode output pulse width adjusting
clock O 4.7
21 A_CLK_SCLK Anode pulse width adjustment clock
signal UART5 I 4.7
22 A_CLK Anode pulse width adjustment clock
signal UART5 O 4.7
23 S_DIS Disable for Cathode drive O 4.7
24 NC _ 0
25 OEL_RESET OEL RESET Output O 5
26 NC _ 0
27 SUB_SI CPU communication data output I 4.8
28 SUB_SO CPU communication data input O 4.8
29 PADJ1(TxD) Anode output pulse width
adjustment data signal 1
(image data)UART1 O 4.7
30 _( R ) (D) NC O/I 0
31 DCLK_MST Master D-CLK
(Clock for image data)UART1 O 4.7
32 UART_S
S4 BUSY GND O 0
33 OEL_OE OEL Outopttoinabl output O 0
34 PADJ0 Anode output pulse width
adjustment data signal 0
(image data)UART0 O 4.7
35 DCLK_SLV0 Slave D-CLK 0
(Clock for image data) I 4.7
36 UART_SS0 GND I 0
37 RDY CPU RDY I 3.7
38 FLASH_RESET Reset for Flash memory O 3.7
39 HOLD EPM Program mode enable for Flash
writer I 3.7
40 FLASH_WP Write protect/Accelaration from
Flash memory O 3.7
41 FLASH_CE Chip enable for Flash memory O 0
42 FLASH_OE Output enable for Flash memory O 4.8
43 NC _ 4.8
44 FLASH_WE Write enable for Flash O 3.7
45 NC _ 3.7
46 FLASH_A22 A21 in Address bus O 4.5
47 FLASH_A21 A20 in Address bus O 4.5
48 FLASH_A20 A19 in Address bus O 4.5
49 FLASH_A19 A18 in Address bus O 4.5
50 FLASH_A18 A17 in Address bus O 4.5
Pin
No. Port Description I/O (V)
51 FLASH_A17 A16 in Address bus O 4.5
52 FLASH_A16 A15 in Address bus O 4.7
53 FLASH_A15 A14 in Address bus O 4.7
54 FLASH_A14 A13 in Address bus O 4.7
55 FLASH_A13 A12 in Address bus O 4.7
56 FLASH_A12 A11 in Address bus O 4.7
57 FLASH_A11 A10 in Address bus O 4.7
58 FLASH_A10 A9 in Address bus O 4.7
59 FLASH_A9 A8 in Address bus O 4.7
60 VDD 3.3V +3.3v Power supply _ 3.8
61 FLASH_A8 A7 in Address bus O 4.7
62 GND GND _ 0
63 FLASH_A7 A6 in Address bus O 4.7
64 FLASH_A6 A5 in Address bus O 4.7
65 FLASH_A5 A4 in Address bus O 4.7
66 FLASH_A4 A3 in Address bus O 4.7
67 FLASH_A3 A2 in Address bus O 4.7
68 FLASH_A2 A1 in Address bus O 4.7
69 FLASH_A1 A0 in Address bus O 4.7
70 FLASH_RY/BY Pulled up to H I 4.7
71 FLASH_D15 DQ15 in Data bus I/O 4.7
72 FLASH_D14 DQ14 in Data bus I/O 4.7
73 FLASH_D13 DQ13 in Data bus I/O 4.7
74 FLASH_D12 DQ12 in Data bus I/O 4.7
75 FLASH_D11 DQ11 in Data bus I/O 4.7
76 FLASH_D10 DQ10 in Data bus I/O 4.7
77 FLASH_D9 DQ9 in Data bus I/O 4.7
78 FLASH_D8 DQ8 in Data bus I/O 4.7
79 FLASH_D7 DQ7 in Data bus I/O 4.7
80 FLASH_D6 DQ6 in Data bus I/O 4.7
81 FLASH_D5 DQ5 in Data bus I/O 4.7
82 FLASH_D4 DQ4 in Data bus I/O 4.7
83 FLASH_D3 DQ3 in Data bus I/O 4.7
84 FLASH_D2 DQ2 in Data bus I/O 4.7
85 FLASH_D1 DQ1 in Data bus I/O 4.7
86 FLASH_D0 DQ0 in Data bus I/O 4.7
87 KEY_RET4 Key return 4 I 0
88 KEY_RET3 Key return 3 I 0
89 KEY_RET2 Key return 2 I 0
90 KEY_RET1 Key return 1 I 0
91 KS3 Key scan 3 I/O 4.7
92 KS2 Key scan 2 I/O 4.7
93 KS1 Key scan 1 I/O 4.7
94 AD_AVSS A/D converter grand potential _ 0
95 TH_DETECT Temperature detection input I 2
96 AD_VREF +5v Power supply _ 5
97 AD_AVCC +5v Power supply _ 5
98 PADJ3 Anode output pulse width
adjustment data signal 3
(image data)UART4 O 4.7
99 NC _ 0
100 DCLK_SLV4 Slave D-CLK 4
(Clock for image data) I 4.7
11.2. Display Block
13
CQ-C8405N