2: Functional Description
xPico® 110 Embedded Device Server Integration Guide
21
Figure 2-17 Evaluation Board Schematic, Sheet 3 of 6
TXDB
RXDB
JP18
HEADER 3
1
2
3
C21
4.7uF
RX2_232
L9
BLM15BB220SN1D
L11
BLM15BB220SN1D
C23
0.1uF, 50V
C24
0.1uF, 50V
C26
0.1uF, 50V
TX2_232
C25
0.1uF, 50V
RS232
C22
0.1uF
SERIAL PORT 2
TTL
RS232
U8
SP3232E
GN
D
15
VC
C
16
R1IN
13
R2IN
8
T2IN
10
T1IN
11
C1+
1
C1-
3
C2+
4
C2-
5
V+
2
V-
6
R1OUT
12
R2OUT
9
T1OUT
14
T2OUT
7
3V3
3V3
3V3
ORA
GRN
LED9
SML521MDW
1
3
2
4
D4
1N914
1
3
2
U9
74LV244
1A1
2
1A2
4
1A3
6
1A4
8
1OE
1
1Y1
18
1Y2
16
1Y3
14
1Y4
12
VC
C
20
GN
D
10
2A1
11
2A2
13
2A3
15
2A4
17
2Y1
9
2Y2
7
2Y3
5
2Y4
3
2OE
19
ORA
GRN
LED8
SML521MDW
1
3
2
4
RXD1 p2,3
TXD1 p2,3
RX1_LED
C27
0.1uF
R22
1M
UART_ACT4
UART_ACT6
RX2_LED
TXD2
TX1_LED
RXD2
RX1 LED
TX1 LED
RX2 LED
TX2 LED
UART_ACT2
UART_ACT1
UART_ACT3
RS-232 Activity LEDs
UART_ACT5
R23
220
R24
220
R26
220
R29
220
C28
0.22uF
C29
0.22uF
C30
0.22uF
C31
0.22uF
R27
1K
R28
1K
TX2_LED
UART_ACT7
R25
1M
R30
1M
R31
1M
UART_ACT8
D1
1N914
1
3
2
D2
1N914
1
3
2
D3
1N914
1
3
2
RXD2
p2
TXD2
p2
RXDB
TXDB
JP8
HEADER 3
1
2
3
USB_TX
p7
USB_RX
p7
Install Jumpers from pins 1 to 2 for DB9 Serial Port 1
Install Jumpers from pins 2 to 3 for USB/Serial Port
Port 2 Headers
JP9
HEADER 3
1
2
3
3V3
3V3
Serial Driver 2 and Serial LEDs