Lantronix xPico xPico - Integration Guide - Page 16

Signal Name, xPico, Primary Function, Reset, State, Internal, Pull-up, Driver, Strength, Table 2-3

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2: Functional Description Table 2-3 xPico (wired) PCB Interface Signals Signal Name GND GND CP8 xPico Pin # 1 2 3 Primary Function Signal Ground Signal Ground Configurable I/O Reset State Input LED1/LINK RTS1 LED0/SPEED RXD1 4 Ethernet Link LED, active low Output 5 Serial ready to send/ serial Output transmit enable 6 Ethernet speed LED, active Output low 7 Serial receive data input 1 Input LED2/ACTIVITY 8 Ethernet Activity LED, active Output low GND 9 Signal Ground TXD1 10 Serial transmit data output 1 Output TX- 11 Ethernet transmit differential Output (neg) TCT 12 Ethernet transmit center tap TX+ 13 Ethernet transmit differential Output (pos) LED3/DUPLEX 14 Ethernet Duplex LED, active Output low GND 15 Signal Ground CTS1 16 Serial Clear to Send Input RXRCT RX+ SYSTEM_LED GND Reserved RXD2 17 Ethernet receive differential Input (neg) 18 Ethernet receive center tap 19 Ethernet receive differential Input (pos) 20 System status LED, active high Input 21 Signal Ground 22 Reserved for future use. Do not connect. 23 Serial receive data input 2 Input Reserved TXD2 CP2/INT 24 Reserved for future use. Do not connect. 25 Serial transmit data output 2 Output 26 Configurable I/O-External interrupt input Input Internal Pull-up Driver Strength Active 56K to 122K 4mA 8mA 2mA 8mA Active 56K to 122K 8mA 2mA 8mA Active 56K to 122K Active 56K 4mA to 122K Active 56K to 122K Active 56K to 122K 2mA 4mA xPico® Embedded Device Server Integration Guide 16

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2: Functional Description
Table 2-3
xPico (wired) PCB Interface Signals
Signal Name
xPico
Pin #
Primary Function
Reset
State
Internal
Pull-up
Driver
Strength
GND
1
Signal Ground
GND
2
Signal Ground
CP8
3
Configurable I/O
Input
Active 56K
to 122K
4mA
LED1/LINK
4
Ethernet Link LED, active low
Output
8mA
RTS1
5
Serial ready to send/ serial
transmit enable
Output
2mA
LED0/SPEED
6
Ethernet speed LED, active
low
Output
8mA
RXD1
7
Serial receive data input 1
Input
Active 56K
to 122K
LED2/ACTIVITY
8
Ethernet Activity LED, active
low
Output
8mA
GND
9
Signal Ground
TXD1
10
Serial transmit data output 1
Output
2mA
TX-
11
Ethernet transmit differential
(neg)
Output
TCT
12
Ethernet transmit center tap
TX+
13
Ethernet transmit differential
(pos)
Output
LED3/DUPLEX
14
Ethernet Duplex LED, active
low
Output
8mA
GND
15
Signal Ground
CTS1
16
Serial Clear to Send
Input
Active 56K
to 122K
RX-
17
Ethernet receive differential
(neg)
Input
RCT
18
Ethernet receive center tap
RX+
19
Ethernet receive differential
(pos)
Input
SYSTEM_LED
20
System status LED, active
high
Input
Active 56K
to 122K
4mA
GND
21
Signal Ground
Reserved
22
Reserved for future use.
Do
not connect.
RXD2
23
Serial receive data input 2
Input
Active 56K
to 122K
Reserved
24
Reserved for future use.
Do
not connect.
TXD2
25
Serial transmit data output 2
Output
2mA
CP2/INT
26
Configurable I/O-External
interrupt input
Input
Active 56K
to 122K
4mA
xPico® Embedded Device Server Integration Guide
16