Datex-Ohmeda 7900 - Figure 8-11 Microcontroller Board Schematic Diagram

8 /Schematics
8-12 7900 Ventilator- 1503-0151-000 1-97
Figure 8-11
Microcontroller board schematic diagram, page 5 of 10
E2_POWER
SH4
U32
SP720
U38
74FCT574
0.1UF
C118
50V
10%
1/8W
1%
R151
200
TP17
PWR_ENABLE
SH1
130LT3
CR9
130LT3
CR10
TPS7150QD
VR2
RESET
SH7
BAUD_CLOCK
SH1
RESET
SH1,5
ATOD_CLK_TST
AUDIO_CS
SH2
AUDIO_WE
SH2
A[0:23]
SH1-3
A0
U24
YM2413
50V
0.1UF
10%
C34
C33
10UF
25V
10%
U48
74HC14
C97
10%
0.1UF
50V
50V
0.1UF
10%
C103
J1
U48
74HC14
ATOD_REF_TST
SH8
SH2
ATOD_CLK_TP
J4
SDA2_EXP
SH4
SDA1_INSP
SH4
DSO_BDM
DSO_BDM
SH1
DSI_BDM
DSI_BDM
SH1
RESET
RESET
SH1-5
FREEZE_BDM
FREEZE_BDM
SH1
DSCLK_BDM
DSCLK_BDM
SH1
BERR_BDM
BERR_BDM
SH1
U48
74HC14
10%
50V
0.1UF
C92
1/8W
1%
R198
4.99K
C96
0.1UF
50V
10%
SP720
U63
1/8W
1%
R181
4.99K
1/8W
1%
R129
4.99K
1/8W
10K
1%
R148
R189
1%
10K
1/8W
1/8W
10K
1%
R188
1/8W
10K
1%
R203
R202
1%
10K
1/8W
R149
1%
10K
1/8W
74HC14
U43
74HC14
U43
74HC14
U43
74HC14
U43
74HC14
U43 U43
74HC14
SDA2_IN
SH1
SDA1_IN
SH1
200
R115
1%
1/8W
SDA1_OUT
SH1
R116
4.99K
1/8W
1%
SDA2_OUT
SH1
1/8W
15K
1%
R132
XDOUT[0:7]
SH4
XDOUT5
XDOUT7
XDOUT0
XDOUT1
XDOUT2
XDOUT3
XDOUT4
XDOUT6
XDOUT0
XDOUT1
XDOUT2
XDOUT3
XDOUT4
XDOUT5
XDOUT6
XDOUT7
2N7002
M6
2N7002
M3
2N7002
M5
0.1UF
C120
50V
10%
1/8W
15K
1%
R130
4.99K
R131
1%
1/8W
U21
LM4860M
U22
7555
C98
0.01UF
50V
10%
C95
0.1UF
50V
10%
C83
16V
10%
1UF
DS_BDM
DS_BDM
SH1
R164
1%
200
1/8W
EXT_CS
SH2
D0
D1
D2
D3
D4
D5
D7
D6
D[0:15]
SH1-4,6,7
D0
D1
D2
D3
D4
D5
D6
D7
200
R118
1%
1/8W
3.32K
R125
1/8W
1%
E1
PJ2
7.68K
1/8W
1%
R117
0.22UF
10%
25V
C93
2.26K
1%
1/8W
R113
5.11MEG
1%
1/8W
R112
150PF
10%
50V
C94
499K
R114
1%
1/8W
IN12
IN11
IN10
IN9
IN8
V+
IN14
IN13
V-
IN7
IN6
IN5
IN4
IN3
IN2
IN1
8
16
10
9
7
6
5
4
3
215
14
13
12
11
1
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
OC
CLK
1D
4D
5D
6D
7D
8D
3D
2D
19
18
17
16
15
14
13
12
1
11
2
5
6
7
8
9
4
3
IN2
IN1
EN
OUT1
OUT2
SENSE
PG
GND
3
4
2
5
6
7
8
1
A0
D0
D1
D2
D3
D4
D5
D6
D7
GND
XOUT
CS
ICWE
XIN
RO
VCC
MO
17
18
2
3
4
5
6
7
10
11
12
14
15
8
9
13
16
1
VDD
+5.5V
VDD
65
VDD
2
1
1011
VDD
1
10
11
12
13
15
16
17
18
19
2
20
3
4
5
6
7
8
9
14
89
IN12
IN11
IN10
IN9
IN8
V+
IN14
IN13
V-
IN7
IN6
IN5
IN4
IN3
IN2
IN1
1
11
12
13
14
152
3
4
5
6
7
9
10
16
8
VDDVDD
VDD
+5.5V
VH_EL
-15V
+15V
VDD
VDD
VDD
VDD
VDD
43
89
11 101213
21 56
HP-SENSE
VO2
VO1
GAIN-OUT
VDD
BYPASS
HP-IN1
HP-IN2
IN+
IN-
SHUTDOWN
GND;1,4,8,9,16
15
11
105
14
13
2
6
7
3
12
TR
V+
DCHG
CONTRST
OUTTRIG
GND
6
8
7
54
32
1
1.4KHz
A/D_REF_TST
DGND
DGND
AGND
+15V_TST
-15V_TST
+5.5V_TST
V_EL_TST
VDD_TST
TEST/BDM
NOTE: THIS CIRCUIT IS NOT INSTALLED