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4-3
A
Main Board Electric Diagram for SD-270: Vaddis_SDRAM_Fla
Flash speed <= 70 nS.
If plan to use 90ns
Flash, it needs to be
verified by s/w.
U4
MEMADD15
1
48
MEMADD16
A15
A16
MEMADD14
2
47
A14
BYTE#
VCCQ
MEMADD13
3
46
1
A13
GND
MEMADD12
MEMDAT15
4
45
A12
DQ15
MEMADD11
5
44
MEMDAT7
A11
DQ7
MEMADD10
6
43
MEMDAT14
A10
DQ14
MEMADD9
7
42
MEMDAT6
A9
DQ6
MEMADD8
MEMDAT13
8
41
A8
DQ13
MEMADD19
R39
0R
MEMDAT5
9
40
NC
A19
DQ5
10
39
MEMDAT12
A20
DQ12
MEMWR#
11
38
MEMDAT4
WE#
DQ4
12
37
DSPVCC33
RP#
VCC
DSPVCC33
DSPVCC33
MEMDAT11
13
36
VPP
NC
DQ11
MEMDAT3
C48
14
35
WP#
NC
DQ3
R40
NM
15
34
MEMDAT10
10nF
RY/BY#
A19
DQ10
MEMADD18
16
33
MEMDAT2
A18
DQ2
MEMADD17
17
32
MEMDAT9
A17
DQ9
MEMADD7
18
31
MEMDAT1
A7
DQ1
MEMADD6
MEMDAT8
19
30
Close to Pin37 of U4
A6
DQ8
MEMADD5
MEMDAT0
20
29
A5
DQ0
MEMADD4
21
28
MEMRD#
A4
OE#
MEMADD3
22
27
A3
GND
MEMADD2
23
26
MEMCS0#
A2
CE#
MEMADD1
MEMADD0
24
25
A1
A0
SST39VF800
[39VF400/800/160]
Flash select
R39
R40
Intel
NM
0R
AMD/SST
0R
NM
MEMADD2
DSPVCC33
MEMADD1
BOOTSEL
JP3
JP2
R41
R42
1K
1K
Play
OPEN
OPEN
2
[NM]
[NM]
Download
OPEN
CLOSE
SW debug
CLOSE
OPEN
JP2
JP3
BOOTSEL1[NM]
BOOTSEL1[NM]
DSPVCC33
C12
C11
C10
C9
C8
C7
10nF
10nF
10nF
10nF
10nF
10nF
DSPVCC18
C23
C22
C21
C20
C19
10nF
10nF
10nF
10nF
10nF
FB1
DSPVCC33
SDRAM3.3V
500Z
EC1
C2
C3
C4
C5
C6
+
47uF/16V
10nF
10nF
10nF
10nF
10nF
3
Place de-coupling capacitors close to power pins.
C45
22pF
[NM]
R1
4.7K
DSPVCC33
SDRAM3.3V
U2
U3
16Mbit: K4S161622C-TC/L70
NM
[64Mbit:K4S641632H-UC70]
4
SDRAM3.3V
A
B
OPU:
313A
HD65
Close to Vaddis!
R5:
22K
11K
R6:
33K
18K
FOCUS_S
R3
51K
FOCUS_S
TRACK_S
R4
51K
TRACK_S
SPDL_S
R5
22K
SPDL_S
SLED_S
R6
51K
SLED_S
C31
C32
C33
C34
1nF
1nF
27nF
1nF
C51
0.1uF
DSPVCC18
DSPVCC33
U1A
215
G
216
G
217
G
218
G
219
G
220
G
MEMDAT2
1
MEMDAT[2]
MEMDAT10
2
MEMDAT[10]/GPIO[0]
MEMDAT3
3
MEMDAT[3]
MEMDAT11
4
MEMDAT[11]/GPIO[1]
MEMDAT4
5
MEMDAT[4]
MEMDAT12
6
MEMDAT[12]/GPIO[2]
MEMDAT5
7
MEMDAT[5]
MEMDAT13
8
MEMDAT[13]/GPIO[3]
MEMDAT6
9
MEMDAT[6]
MEMDAT14
10
MEMDAT[14]/GPIO[4]
11
GNDC
Vaddis 9
MEMDAT7
12
MEMDAT[7]
MEMDAT15
13
MEMDAT[15]
14
VDDC
15
VDDP
MEMADD16
16
MEMADD[16]
17
MEMCS1#/GPIO[5]
MEMADD15
18
MEMADD[15]
MEMADD14
19
MEMADD[14]
MEMADD13
20
MEMADD[13]
MEMADD12
21
MEMADD[12]
MEMADD11
22
MEMADD[11]
MEMADD10
23
MEMADD[10]
MEMADD9
24
ZR36966
MEMADD[9]
MEMADD8
25
MEMADD[8]
MEMWR#
26
MEMWR#
MEMADD18
27
MEMADD[18]/GPIO[6]
MEMADD17
28
MEMADD[17]
MEMADD7
29
MEMADD[7]
MEMADD6
30
MEMADD[6]
31
GNDC
MEMADD5
32
MEMADD[5]
MEMADD4
33
MEMADD[4]
MEMADD3
34
MEMADD[3]
35
VDDP
MEMADD2
36
MEMADD[2]
MEMADD1
37
MEMADD[1]
MEMADD19
38
MEMADD[19]/IGPIO[7]
39
USBVDD
40
USBDP/GPO[67]
41
USBDN/GPO[68]
42
USBGND
RAMADD4
43
RAMADD[4]
RAMADD3
44
RAMADD[3]
RAMADD5
45
RAMADD[5]
46
VDDIP
47
GNDC
RAMADD2
48
RAMADD[2]
RAMADD6
49
RAMADD[6]
RAMADD1
50
RAMADD[1]
RAMADD7
51
RAMADD[7]
52
VDDC
221
G
222
G
223
G
224
G
225
G
226
G
500Z
FB30
R2
DSPVCC33
75R
C201
PCLK
0.1uF
C37
10pF
[NM]
Close to
Vaddis
DSPVCC33
SDRAM configuration:
R226
R228
R230
10K
10K
10K
1X16Mbit: CS0# = Low;
[NM]
[NM]
[NM]
1X64Mbit: CS1# = Low; CS0#=BA1
V1
V2
V3
SDRAM speed <=7ns
Tras <=44.4ns
Trp
<=22.2ns
R227
R229
R231
10K
10K
10K
[NM]
[NM]
[NM]
B
C
Important power supply!
VDDPWM
SERVO33
R235 4.7R
C24
+ EC4
10nF
100uF/16V
C194 33pF
C193 33pF
C192 33pF
FB6
VDD1AFE
C191 33pF
500Z
VDDAFE
DSPVCC33
C190 33pF
FB3
500Z
C189 33pF
C27
C26
C25
10nF
10nF
10nF
C35
1nF
C36
1nF
RF
VDDDAC
RF
DSPVCC33
C50
FB4
500Z
33pF
C29
C28
10nF
10nF
Close to Vaddis!
VDDPLL
DSPVCC18
C30
R238 4.7R
0.1uF
250
G
249
G
248
G
247
G
246
G
245
R10
G
392 Ohm 1%
156
Close to
GNDDACBS2
155
RSET
Vaddis
C_B_U
154
DAC1
C_B_U
VDDDAC
153
VDDDAC
152
Y_R_V
DAC2
Y_R_V
151
CVBS_C
DAC3
CVBS_C
150
VDDDAC
VDDDAC
CVBS_G_Y
149
DAC4
CVBS_G_Y
148
GNDDAC_D
147
CVBS_C_Y
DAC5
CVBS_C_Y
146
OSCIN
XIN
145
OSCOUT
XO
VDDPLL
144
VDDPLL
143
GNDPLL
142
RESET#
RESET#
141
C202
1nF
GNDC
140
VDDC
DUPRD1
DUPRD1
R24
0R
MUTE_CTL
139
GPIO[48]/DUPRD1
DUPTD1
100p
DUPTD1
R25
10K [NM]
FS3
138
GPIO[47]/DUPTD1
137
DUPRD0
C154
DUPRD0
R26
10K [NM]
FS2
GPIO[46]/DUPRD0
136
DUPTD0
DUPTD0
R27
10K [NM]
FS1
GPIO[45]/PWMCO[5]/DUPTD0
135
VDDP
IRRCV
C205
134
MUX GPIOs
IGPIO[44]
IRRCV
FPC_DOUT
1nF
133
GPIO[43]/TDO
FPC_DOUT
FPC_CLK
132
GPIO[42]/TCK
FPC_CLK
131
FPC_STB
GPIO[41]/TDI/NMI
FPC_STB
130
INSW
GPIO[40]
INSW
129
CD_DVD
GPIO[39]
CD_DVD
DRVSB
128
GPIO[38]
DRVSB
IN_OUT_SW
127
IGPIO[37]/TMS/NMI
IN_OUT_SW
126
CLOSE
GPIO[36]
CLOSE
125
OPEN
GPIO[35]
OPEN
124
HOMESW
GPIO[34]/RAMCKE/SPDIFIN
HOMESW
AIN
123
GPIO[33]/AIN/SPDIFIN
AIN
S/PDIF_OUT
122
GPIO[32]/SPDIFO
S/PDIF_OUT
121
FB7
75Z
ABCLK
GPIO[31]/ABCLK
ABCLK
120
FB8
75Z
ALRCLK
GPIO[30]/ALRCLK
ALRCLK
119
VDDP
FB9
75Z
AMCLK
R12
NM [0R]
APWM_L-
118
GPIO[29]/AMCLK
AMCLK
117
GNDC
116
APWM_L1-
GPIO[28]/AOUT[0]/APWM0-
115
R244
NM [0R]
APWM_L1-
R28
33R [NM]
AOUT0
GPIO[27]/APWM0+
APWM_L+
114
R245
NM [0R]
GPIO[26]/AOUT[1]/APWM1-
APWM_R-
R246
NM [0R]
113
GPIO[25]/APWM1+
APWM_R+
112
MUX GPIOs
GPIO[24]/AOUT[2]/APWM2-
111
IGPIO[23]/APWM2+
110
GNDAPWM
109
GPIO[22]/AOUT[3]/APWM3-
V1
108
GPIO[21]/APWM3+
V2
DSPVCC33
107
GPIO[20]/APWM4-
V3
R56
0R
[4.7R]
106
GPIO[19]/PWMCO[5]/APWM4+
105
VDDAPWM
244
C15
G
10nF
EC20
243
+
G
242
G
241
NM
G
240
[220uF/16V]
G
239
G
IRRCV
STBY_KEY
STBY_KEY
LED/PCON
R30
LED/PCON
15K
I2C_CLK
I2C_CLK
I2C_DAT
I2C_DAT
ML
ML
DAC_RST#
DAC_RST#
DSPVCC33
R224
4.7K
[NM]
R225
0R[NM]
R223
NM [0R]
WPCON
EEPROM
U5
8
1
DSPVCC33
VCC
A0
7
2
WP
A1
6
3
SCL
A2
5
4
SDA
GND
R38
R37
C44
2K
2K
NM
[0.1uF]
NM
[24LC02 ]
I2C_CLK
I2C_DAT
UART
CN109
1
CN10
DSPVCC33
DUPTD0
2
1
DSPVCC33
DUPRD0
3
DUPTD1
2
DUPRD1
4
3
4
DOWN_LOAD_I/F
[NM]
HYPER_TERMINAL I/F
[NM]
C
4-3
D
Crystal
Use it to connect the shell of the crystal with ground.
OSCOUT
C39
22pF
R15
EC9
10uF/16V
75R
R14
220K
Y1
D1
27.000MHz
Third overtone
LL4148
OSCIN
C38
22pF
C206
R13
75R
NM
[20p]
C10
A2
C48
A1
C11
A2
C49
C1
C12
A2
C5
A3
C15
C3
C50
C1
C154
C51
C2
B1
C189
C1
C6
A3
C19
A2
C7
A2
C190
C1
C8
A2
C191
C1
C9
A2
C192
C1
CN10
C4
C193
C1
CN109
C4
C194
C1
D1
E1
MUTE_CTL
FS3
FS2
C2
A3
EC1
A3
FS1
C20
A2
EC20
C3
C201
B3
EC4
C1
C202
C2
EC9
E1
C205
FB1
D2
A3
C206
D1
FB3
D1
C21
A2
FB30
B3
C22
A2
FB4
D1
C23
A2
FB6
C1
APWM_L-
C24
C1
FB7
C2
AOUT0
C25
C1
FB8
C2
C26
C1
FB9
C2
C27
C1
JP2
A2
C28
C1
JP3
A2
C29
C1
Q1
E1
C3
A3
R1
A3
C30
C1
R10
C2
C31
B1
R12
D2
C32
B1
R13
D1
C33
B1
R14
D1
C34
B1
R15
D1
C35
R19
C1
C2
C36
C1
R2
B3
C37
B3
R20
C2
C38
D1
R21
C2
C39
D1
R22
C2
C4
A3
R223
C3
C43
E1
R224
C3
C44
C4
R225
C3
C45
A3
R226
B4
D
E
RESET
DSPVCC33
330R
R33
R36
100R
RESET#
R34
10K
Q1
BT3904
R35
C43
1
10K
0.22uF
R227
B4
R228
B4
R229
B4
R23
C2
R230
B4
R231
B4
R235
D1
R238
D1
R24
D2
R244
C2
R245
C2
2
R246
C2
R25
D2
R26
D2
R27
D2
R28
D2
R3
B1
R30
C3
R33
E1
R34
E1
R35
E1
R36
E1
R37
C4
R38
C4
R39
A1
R4
B1
R40
A1
R41
A2
R42
A2
R5
B1
R56
C3
R6
B1
3
R7
B1
R8
B1
R9
B1
U1A
B1
U2
A4
U3
A4
U4
A1
U5
C4
Y1
D1
4
E
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