Cinterion DSB75 - Figure 52: Schematic Sheet 2 - ASC0, ASC1 and ASC2 Interface

DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released

DSB75_hd_v12 Page 89 of 96 2008-08-26
sheet2
06.07.2004
SCHEMATIC
ASC2
ASC0
9pol SubD
R244 220R
DSB75
9pol SubD
ASC1
9pol SubD
TOP HIERARCHY LEVEL
1:1
B1
S200
1
2
3
LYT679-CO
V244
21
V200
BC847
B1
25
B2
6
C1
C2
3 1
E1
4
E2
5 6 7 8 9
220R R243
220R
X202
1 2 3 4
100K
R251
220R R236 R237
L201
600R/100MHZ
220R
R201
V242
LYT679-CO
21
C207
100N
R267 100K
220R R235
C231
100K
R264
R205
220R
100N
LYT679-CO
21
R240 220R
C200
100N
GND
3V0
220R R241
V234
LST679-CO
V235
21
R202
220R
GND
V240
LST679-CO
21
220R
R212
10
T4OUT
17
T5IN T5OUT
12 27
V+
V-
4
26
VCC
V239
LGT679-CO
21
VDD
R3IN
1118
R3OUT
SHDN
14
T1IN
24
T1OUT
5
23
T2IN
6
T2OUT
T3IN
22
T3OUT
7
T4IN
19
C1-
25
C2+
1 3
C2-
13
EN
GND
2
15
MBAUD
R1IN
821
R1OUT R1OUTB
16
9
R2INR2OUT
20
GND
GND
3V0
GND
D201 MAX3237ECAI
28
C1+
C211
33P
NB_
100N C208
VDD
2 3 4 5 6 7 8 9
3V0
GND
A B
C D
E
F
3V0
X205
1
V243
LST679-CO
21
3V0
R220
0R
R203
220R
100N
C230
C202
GND
220R R211
T4IN
19 10
T4OUT
17
T5IN T5OUT
12 27
V+
V-
4
26
VCC
100N
9
R2INR2OUT
20
R3IN
1118
R3OUT
SHDN
14
T1IN
24
T1OUT
5
23
T2IN
6
T2OUT
T3IN
22
T3OUT
7
28
C1+ C1-
25
C2+
1 3
C2-
13
EN
GND
2
15
MBAUD
R1IN
821
R1OUT R1OUTB
16
600R/100MHZ
220R R238
D200 MAX3237ECAI
3V0
600R/100MHZ
L203
3V0
L202
GND
R270
10K
R242 220R
220R R233
R250
47K
G
F
E D C B A
4K7
R252
GND
100N
C205
LGT679-CO
V230
21
GND
R234 220R
GND
220R
R209
10 20
VCC
C206
100N
R232 220R
2A2 2A3
15 17
2A4
19
2OE
9
2Y1
7
2Y2
5
2Y3
3
2Y4
GND
1A3
8
1A4
1
1OE
18
1Y1
16
1Y2
14
1Y3
12
1Y4
11
2A1
13
220R
SN74LVC244A
D220
2
1A1
4
1A2
6
GND
GND
GND
LST679-CO
V241
21
R213
LGT679-CO
V238
21
R246
33R
220R
R210
R200
220R
2
X206
12
R263
100K
0R
R214
X204
1
21
GND
LYT679-CO
V233
21
100N
R207
220R
V237
LST679-CO
C210
NB_
V232
LGT679-CO
21
GND
C203
V231
LGT679-CO
21
R206
220R
33P
GND
S201
1
2
3
C209
100N 100N
C204
100K R266
3V0
2OE
9
2Y1
7
2Y2
5
2Y3
3
2Y4
GND
10 20
VCC
1Y1
16
1Y2
14
1Y3
12
1Y4
11
2A1
13
2A2 2A3
15 17
2A4
19
SN74LVC244A
D221
2
1A1
4
1A2
6
1A3
8
1A4
1
1OE
18
100K
R262
220R R230
654321
100K
R260
R261
100K
10U
C232
3V0
3V0
10987
APPR'D
USER DATE
R208 220R
3V0
Siemens AG
220R
R204
R231 220R
4 5 6 7 8 9
GND
X203
12
3V0
X201
1 2 3
V236
21
R239 220R
GND
R221
0R
C201
151413121110987654321
LST679-CO
R272
100K
3V0
0R
R215
100N
DCD0
RXD1_I
RXD2_I
CTS1_I
SYNC
DTR0
ASC_EN1
DTR0
TXD2_I
ASC_EN2
ASC_SD
ASC_SD
DTR
VDD_EN
PWR_IND
100K
R271
GND
RXD1 RTS1
PWR_IND
RXD2_GPIO9 TXD2_GPIO10
RTS0 CTS0
DCD0
TXD1_I
RING0
DSR0
RXD0_I
RTS1_I
CTS1
USC2
TXD0_I
USC1
RXD0_I
RXD0 TXD0
TXD0_I
TXD1
PWR_IND
ASC_SD
ASC_EN1
ASC_EN2
RING0 RXD0_I TXD0_I CTS0 RTS0 DSR0
NB = not mounted
Figure 52: Schematic sheet 2 – ASC0, ASC1 and ASC2 interface