Lantronix xPico xPico - Integration Guide - Page 18

Configurable I/O/SPI Master

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2: Functional Description Signal Name NC NC NC WKUP4 GND CTS17 NC NC NC SYSTEM_LED GND DDP2 RXD2 DDM2 TXD2 CP2/INT1 CP7/SPI_SCK1 CP3/MISO1 3V3 CP4/MOSI1 3V3 CP5 3V3 CP6 CP1 DEFAULT# xPico Pin # 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Primary Function No Connect No Connect No Connect System Wake Up on Rising Edge Signal Ground Serial Clear to Send No Connect No Connect No Connect System status LED, active high Signal Ground USB (positive) Serial receive data input 2 USB Negative Serial transmit data output 2 Configurable I/O-External interrupt input Configurable I/O/ SPI Clock Configurable I/O/SPI Master In-Slave Out 3.3V Input Power Configurable I/O/ SPI Master Out-Slave In 3.3V Input Power Configurable I/O 3.3V Input Power Configurable I/O Configurable I/O Unit reset to default, active low. Drive low to reset unit to Reset State floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Input, floating Internal Pull-up /Pulldown Driver Strength 30K to 50K 30K to 50K 30K to 50K 8mA 30K to 50K 30K to 50K 8mA 30K to 50K 8mA 30K to 50K 8mA 30K to 50K 8mA 30K to 50K 8mA 30K to 50K 8mA 30K to 50K 8mA 30K to 50K 8mA 30K to 50K xPico® Embedded Device Server Integration Guide 18

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2: Functional Description
Signal Name
xPico
Pin #
Primary Function
Reset
State
Internal
Pull-up
/Pull-
down
Driver
Strength
floating
NC
11
No Connect
NC
12
No Connect
NC
13
No Connect
WKUP
4
14
System Wake Up on Rising
Edge
Input,
floating
30K to 50K
GND
15
Signal Ground
CTS1
7
16
Serial Clear to Send
Input,
floating
30K to 50K
NC
17
No Connect
NC
18
No Connect
NC
19
No Connect
SYSTEM_LED
20
System status LED, active
high
Input,
floating
30K to 50K
8mA
GND
21
Signal Ground
DDP
2
22
USB (positive)
RXD2
23
Serial receive data input 2
Input,
floating
30K to 50K
DDM
2
24
USB Negative
TXD2
25
Serial transmit data output 2
Input,
floating
30K to 50K
8mA
CP2/INT
1
26
Configurable I/O-External
interrupt input
Input,
floating
30K to 50K
8mA
CP7/SPI_SCK
1
27
Configurable I/O/ SPI Clock
Input,
floating
30K to 50K
8mA
CP3/MISO
1
28
Configurable I/O/SPI Master
In-Slave Out
Input,
floating
30K to 50K
8mA
3V3
29
3.3V Input Power
CP4/MOSI
1
30
Configurable I/O/ SPI Master
Out-Slave In
Input,
floating
30K to 50K
8mA
3V3
31
3.3V Input Power
CP5
32
Configurable I/O
Input,
floating
30K to 50K
8mA
3V3
33
3.3V Input Power
CP6
34
Configurable I/O
Input,
floating
30K to 50K
8mA
CP1
35
Configurable I/O
Input,
floating
30K to 50K
8mA
DEFAULT#
36
Unit reset to default, active
low.
Drive low to reset unit to
Input,
floating
30K to 50K
xPico® Embedded Device Server Integration Guide
18