User's Manual
Table Of Contents
- 1 Introduction
- 2 Block Diagram
- 3 Application Interface
- 4 Module Pins
- 5 Electrical Characteristics
- 6 Mechanical Characteristics
- 7 Application Diagram
- 8 Approvals/Certifications
- 9 Related Documents
- 10 Packing
- 11 Ordering Information
- 12 History
BlueMod+S/AI
Hardware Reference
www.stollmann.de Page 18 of 52
3.7 SPI Serial Peripheral Interface
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The serial peripheral interface (SPI) allows for full-duplex, synchronous, serial communication with
external devices. The interface can be configured as the master and then provides the
communication clock (SCK) to the external slave device(s), or as the slave. The SPI Interface
supports SPI-modes 0 through 3. Module pins are used as follows:
• GPIO[2]: SPI-MOSI
• GPIO[5]: SPI-MISO
• GPIO[8]: SPI-SCK
GPIO[8]/SPI-SCK
GPIO[2]/SPI-MOSI
BlueMod+S
E-2
SPI-Master
connected device
SPI-Slave
GPIO[5]/SPI-MISO
D-1
F-2
SCK, SPI_CLK
SDI, MOSI
SDO, MISO
typical signals:
Figure 8: BlueMod+S SPI Interface (Example: Master Mode)
3.8 Bluetooth Radio Interface
The BlueMod+S/AI presents an integrated ceramic antenna.
It is highly recommended that you follow the design rule given in the Stollmann Application Note on
Antenna design [4].
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subject to firmware support, contact Stollmann for current status