Lantronix PremierWave 2050, Integration Manual

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2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 12
Signal Descriptions
The PremierWave 2050 has a serial interface compatible with data rates up to 921,600 bps. All
of the logic IO pins are 3.3V tolerant. The serial signals usually connect to an internal device,
such as a UART. For applications requiring an external cable running with RS-232 or
RS422/485 voltage levels, the PremierWave 2050 must interface to a serial transceiver chip.
An on-module 10/100 Mbps Ethernet MAC and PHY are included on the module. For
connection to an external Ethernet network, external magnetics and an RJ45 are required.
Table 2-2 PremierWave 2050 (PW20503) PCB Interface Signals
Pin
Number
Signal Name Primary Function Reset
State
Internal
Pull-up
/Pull-
down
Driver
Strength
1 RESET
Unit hardware reset, active low. Drive low
to reboot unit
35K PU
2 GROUND Signal ground. Connect to ground plane
3 DEFAULT
Unit reset to default, active low.
Drive low for 7 seconds or longer to reset
unit to default settings.
35K PU
4 WAKE
CPU wake up input. Module wakes
from low power state on a rising
edge
100K
PU
5 TXD1 UART1 serial transmit data output
6 ETX+ Ethernet TX (Positive)
7 RTS1 UART1 serial ready to send output
8 ETX- Ethernet TX (Negative)
9 RXD1 UART1 Serial receive data input
10 ETCT Center tap connection for Ethernet TX pair
11 CTS1 UART1 clear to send input
12 ERCT Center tap connection for Ethernet RX pair
13 CP1 Reserved for future GPIO
14 ERX+ Ethernet RX (Positive)
15 CP2 Reserved for future GPIO
16 ERX- Ethernet RX (Negative)
17 CP3 Reserved for future GPIO
18 LINK
LED function for WLAN link indication,
active low
19 CP4 Reserved for future GPIO
20 ACT
Ethernet link/activity LED,
active low for link, toggle for activity.
21 TXD2 UART2 serial transmit data output
22 WLAN System status LED, active high
23 RTS2 UART2 serial ready to send output