Electric Circuit Diagrams
4 - 5
(2) SDRAM
The SDRAM adopting EDS2516APTA-75 (256 Mbit) is used for
program storing and as the waveform work area.
The 256 Mbit SDRAM can be used by setting JP13, JP14, and JP17 to
open, and JP15, JP16, and JP18 to short.
MAC[1..17]
MD[0..31]
MAC[1..17]
MD[0..31]
( 11,13 )
MWR1_2_L
MRD_WR_L
SDRAMCS_L
SD_MCKIO
MCKE
MAC14
( 7,11,13,19 )
( 6 )
MAC13
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9
MD10
MD11
MD12
MD13
MD14
MD15
JP15
JP16
MAC15
( 7 )
MWR0_2_L
JP17
OPEN
JP15
CONNECT TYPE
TYPE-2
TYPE-1
JP18
JP16
SHORT
+3.3V
DG
DG
+3.3V
SDRAM 256M
MAC2
MAC3
MAC4
MAC5
MAC6
MAC7
MAC8
MAC9
MAC10
MAC11
MAC12
MAC1
R153
51F
R154
51F
R155
51F
R156
51F
R157
51F
R158
51F
R159
51F
R160
51F
R161
51F
R162
51F
R163
51F
R164
51F
R165
51F
R166
51F
R167
51F
R168
51F
2
1
+
C189
4.7UF/6.3V(T)3
2
1
+
C190
4.7UF/6.3V(T)3
C242
0.01UFFZ
C243
0.01UFFZ
JP14
0F
JP13
0F
MAC14
MRAS3L_L
MCASL_L
( 7,19 )
( 7 )
( 7 )
( 7 )
( 7,18 )
( 7 )
JP18
JP17
0F
MAA24
MAC13
JP13
SHORT
OPEN
JP14
MAA[0..25]
MAA[0..25]
( 9,11,12,18 )
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
Vccq
43
A8
33
NC
40
NC
36
A11
35
A10/AP
22
A9
34
BS0
20
BS1
21
CS*
19
WE*
16
Vccq
3
LDQM
15
UDQM
39
Vccq
9
RAS*
18
CAS*
17
CKE
37
CLK
38
Vssq
52
Vss
54
Vss
41
Vcc
27
Vss
28
Vcc
14
Vcc
1
DQ14
51
DQ12
48
DQ4
8
DQ3
7
DQ1
4
DQ2
5
DQ5
10
DQ10
45
DQ11
47
DQ13
50
DQ0
2
DQ6
11
DQ7
13
DQ8
42
DQ9
44
DQ15
53
Vccq
49
Vssq
6
Vssq
12
Vssq
46
IC19
EDS2516APTA-75
AMP interface section
[F100 kHz] and [F100 kHzN] are rectangular waves for driving the pulse
transformer output from the MAIN G/A. Diodes (D18 and D19) are
connected to the send/receive data ([TXDA]/[RXDA]) line from the ECG
AMP BOARD to protect it from overcurrent such as static electricity. A
Schmitt trigger inverter (IC37) is connected to the receive data line
([RXDA]) for waveform shaping.
AMP CN
RXDA
TXDA
+5V
DG
GND
F100kHzN
F100kHz
RXD-A
TXD-A
+5V
B100kHz
B100kHz_L
( 5 )
DG
+5V
3
2
1
D18
1SS302
DG
+5V
3
2
1
D19
1SS302
+5V
R357
100KF
( 8 )
( 8 )
( 5 )
1
2
3
4
5
6
P5
00 6224 006 001 800
+5V
DG
UNMOUNT
UNMOUNT
C187
0.1uFFZ
1
7
8
4
IC37A
TC7W14FU
3
5
IC37B
TC7W14FU
Summary of Contents for FX-7302
Page 10: ...viii ...
Page 12: ......
Page 60: ...Chapter 2 2 40 ...
Page 62: ......
Page 86: ...Chapter 4 4 18 ...
Page 87: ...4 19 MAIN BOARD circuit diagram PCB 6956B Power connection table No 1 ...
Page 114: ...4 46 ...
Page 116: ......
Page 130: ......
Page 131: ...6 1 MAIN BOARD PCB 6956B component side ...
Page 132: ...6 2 MAIN BOARD PCB 6956B soldering side ...
Page 133: ...6 3 OPERATION BOARD PCB 6957B component side ...
Page 134: ...6 4 OPERATION BOARD PCB 6957B soldering side ...
Page 135: ...6 5 ECG AMP BOARD PCB 6731D component side ...
Page 136: ...6 6 ECG AMP BOARD PCB 6731D soldering side ...
Page 137: ...6 7 MARK SENSER BOARD PCB 6942 component side ...
Page 138: ...6 8 MAGAZIN UP BOARD PCB 6943A component side ...
Page 139: ...6 9 CONNECTION BOARD PCB 7028 component side ...
Page 140: ...6 10 ...
Page 142: ......
Page 151: ...7 9 Outline view 255 315 70 76 ...
Page 152: ...7 10 ...
Page 154: ......
Page 160: ...Chapter 8 8 6 ...
Page 161: ......