SDI Technologies SDIO Card - Manual (Page 11)

©Copyright 2002-2006 SD Card Association
SDIO Card Bluetooth Type-A Simplified Specification Version 1.00
4
Figure 4 shows the relationship between the Type-A Card and the Type-B Card. The Type-B Card
supports both Type-A and Type-B functions, while the Type-A card provides only the lowest layers of the
Bluetooth stack. The Type-B Card can execute either the Type-B function or the Type-A function at any
time depending on the requirements of the Host. The Type-A Card does not contain the Type-B function
capabilities.
Figure 4 – Functional Relations between the Type-A Card and the Type-B Card
1.4 Requirements for Type-A Specification
The SDIO Card Type-A Specification for Bluetooth is intended for devices that have sufficient
processing resources and can easily be updated or reconfigured. To support these devices, the SDIO
Card Type-A Specification for Bluetooth shall have the following requirements:
ƒ Minimize design change in existing host software and existing host hardware
ƒ Decrease Bluetooth specific design for host developers
ƒ Allow use of any Baseband and radio
Type-A
Card
Type-B
Card
Type-A
Function
Type-B
Function
or
either