RS-RL78G13-2200CC Redpine Signals, RS-RL78G13-2200CC Datasheet - Page 23

• Manufacturer Part Number: RS-RL78G13-2200CC
• Description: WiFi / 802.11 Modules Wi-Fi Companion Card for Renesas
• Manufacturer: Redpine Signals

Specifications of RS-RL78G13-2200CC

• Rohs: yes
• Protocol Supported: 802.11 b/g/n
• Frequency Band: 2.4 GHz
• Interface Type: SPI, UART
• Antenna Connector Type: Chip
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Security: WEP 64/128 bit AES, WPA, WPA2-PSK

6.1 Host
6.1.1 UART
6.1.2 SPI
6.1.3 Thin SPI Driver
6.2 RS9110-N-11-22
6.2.1 SPI
Redpine Signals, Inc.
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As shown in the figure above, the RS9110-N-11-22 module is integrated with
the Host using either UART or SPI interfaces. The transmission and reception
of the data to/from the Host depends on the interface used to connect the
module as briefed below.
UART mode:
The Host transmits/receives raw data using UART interface when the RS9110-
N-11-22 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-
22 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 following sections explain in brief the various components illustrated in
Figure 9.
The Host is any system that has applications being executed and either a
UART or SPI interface.
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-11-22 module and also to send and receive data over the network by
accessing the TCP/IP stack in the RS9110-N-11-22 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-11-22
module and also to configure the same over the SPI interface.
The RS9110-N-11-22 module incorporates Wi-Fi, TCP/IP, DHCP Client, ARP,
etc., to act as a WLAN device. It handles all the network connectivity
functions. The following sections describe the software components of the
RS9110-N-11-22 module in brief.
The SPI on the RS9110-N-11-22 acts the SPI slave. It is a standard 4-wire
SPI and can support a maximum frequency of 25MHz.
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