User's Manual
Table Of Contents
- 1 Introduction
- 2 Block Diagram
- 3 Application Interface
- 3.1 Power Supply
- 3.2 Power-up / -down Slew-Rate
- 3.3 Reset
- 3.4 Supply Voltage Monitor
- 3.5 Serial Interface
- 3.6 GPIO Interface
- 3.7 I2C Interface0F
- 3.8 SPI Serial Peripheral Interface1F
- 1.1
- 3.9 Bluetooth Radio Interface
- 3.10 WLAN Coexistence Interface2F
- 3.11 Slow Clock Interface
- 3.12 Test Mode Enable
- 3.13 Pin Strapped System Memory Boot Mode Invocation
- 3.14 Operating in a Power-Switched Environment
- 3.15 Serial Wire Interface
- 4 Module Pins
- 5 Electrical Characteristics
- 6 Mechanical Characteristics
- 1
- 7 Application Diagram
- 8 Approvals/Certifications
- 9 Related Documents
- 10 Packing
- 11 Ordering Information
BlueMod+SR/AI
BlueMod+SR/AP
Hardware Reference
Release r04d01 www.stollmann.de Page 19 of 65
3.8 SPI Serial Peripheral Interface
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The serial peripheral interface (SPI) allows half/full-duplex, synchronous, serial communication with
external devices. The interface can be configured as the master and in this case it provides the
communication clock (SCK) to the external slave device. The interface is also capable of operating
in multi master configuration. It may be used for a variety of purposes, including simplex
synchronous transfer on two lines with a possible bidirectional data line or reliable communication
using CRC checking. 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+SR
E-2
SPI-Master
Host
SPI-Slave
GPIO[5]/SPI-MISO
D-1
F-2
SCK, SPI_CLK
SDI, MOSI
SDO, MISO
typical signals:
Figure 8: BlueMod+SR SPI Interface e.g. in Master Mode
3.9 Bluetooth Radio Interface
• The BlueMod+SR/AI presents an integrated ceramic antenna.
• The BlueMod+SR/AP presents no integrated ceramic antenna whereas provides a 50Ω RF
interface.
It is highly recommended that you follow the design rule given in the Stollmann Application Note on
Antenna design [4].
2
subject to firmware support, contact Stollmann for current status