User's Manual

PW2050 Embedded Device Server Integration Guide 11
Signal Descriptions
The PW2050 embedded device server has a serial interface compatible with data rates up to
921,600 bps (in high-performance mode). 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 PW2050 must interface
to a serial transceiver chip.
An on module 10/100Mbps Ethernet MAC and PHY are included on the module. For
connection to an external Ethernet network external magnetics and an RJ45 are required.
The module has options for an on-module chip antenna and an external antenna via an on-
module U.FL connection.
Table 2-2 PW2050 Wi-Fi SMT PCB Interface Signals
Signal
Name
PW2050 Pin # Primary Function Reset
State
Internal
Pull-up
/Pull-
down
Driver
Strength
RF1 2 RF signal to PCB trace when
RF1_CTL is asserted low (Future
module versions only)
RF2 4 RF signal to PCB trace when
RF1_CTL is asserted low (Future
module versions only)
CP3/MISO 12 Configurable GPIO / SPI Master
serial data input, SPI Slave serial
data output
CP4/MOSI 13 Configurable GPIO / SPI Master
serial data output, SPI Slave
serial data input
CP7/SCK 14 Configurable GPIO / SPI clock
CP8/CS 15 Configurable GPIO, multiplexed
with SPI interface Chip Select
CP5 16 Configurable GPIO /
I2C Data
10K PU
CP6 17 Configurable GPIO / I2C Clock 10K PU
USB1+/DDP 18 USB (Positive)
USB High Speed Host/Device
Port
USB1-/DDM 19 USB (Negative)
USB High Speed Host/Device
Port
USB2+ 21 USB (Positive)
USB High Speed Host Port