RS9110-N-11-28-04-EVB Redpine Signals, RS9110-N-11-28-04-EVB Datasheet - Page 23

• Manufacturer Part Number: RS9110-N-11-28-04-EVB
• Description: WiFi / 802.11 Development Tools RS9110-N-11-28-04 Evaluation Board
• Manufacturer: Redpine Signals

Specifications of RS9110-N-11-28-04-EVB

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: RS9110-N-11-28-04
• Protocol Supported: 802.11 a/b/g
• Frequency: 2.4 GHz, 5 GHz
• Interface Type: IDC-10, RS-232, SPI, UART, USB
• Operating Supply Voltage: 5 V
• Antenna Connector Type: Chip
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Modulation Technique: CCK, DSSS, OFDM

6.1: Host
6.1.1: UART
6.1.2: SPI
6.1.3: Thin SPI Driver
6.2: RS9110-N-11-28
6.2.1: SPI
6.2.2: UART
6.2.3: Host Abstraction Layer (HAL)
Redpine Signals, Inc.
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UART mode:
The Host transmits/receives raw data using UART interface when the RS9110-
N-11-28 module is configured for UART mode. The access to the TCP/IP stack
in the Wi-Fi module through the UART is provided through AT commands.
SPI mode:
Host transmits/receives raw data using SPI interface when the RS9110-N-11-
28 module is configured for SPI mode. A thin driver on the Host takes care of
interacting with the Wi-Fi module through the SPI Host interface.
The Host is any system that has applications being executed and either a
UART or SPI interface. The Host configures the RS9110-N-11-28 module
through AT commands.
The UART on the Host side provides an interface for the host to access the
Wi-Fi module. UART is used to configure various parameters of the RS9110-
N-11-28 module and also to send and receive data over the network by
accessing the TCP/IP stack in the RS9110-N-11-28 module.
The SPI on the Host side provides an interface for the host to access the Wi-Fi
module. SPI on the Host acts as the master.
The SPI driver on the Host is a thin driver through which the applications
interact with the Wi-Fi module. The SPI driver uses the SPI host controller
driver on the Host to send/receive the data to/from the RS9110-N-11-28
module and also to configure the same over the SPI interface.
The RS9110-N-11-28 module incorporates Wi-Fi, TCP/IP, HTTP, DHCP, ARP,
etc., and OS functionality to act as a wireless device server. It handles all the
network connectivity functions. The following sections describe the software
components of the RS9110-N-11-28 module in brief.
The SPI on the RS9110-N-11-28 acts the SPI slave. It is a standard 4-wire
SPI and can support a maximum frequency of 25MHz.
The UART on the RS9110-N-11-28 module is the physical interface which
transmits/receives the data from the Host. It supports variable baud rates
from 9600 to 3686400 bps. AT commands are used to configure and operate
the module through UART interface.
The HAL abstracts the lower layers in the host interface with which the
RS9110-N-11-28 module is connected. The HAL interacts with the Wireless
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Page 23