User's Manual

Hardware Integration Guide – SDC-MSD30AG
10 SDC-MSD30AG_HIG1.04
© 2006 – 2010 Summit Data Communications, Inc. All rights reserved.
Pin
Number
Pin
Name
Type Description Note
53 No Connect Not Used. Leave Open (Float)
54 No Connect Not Used. Leave Open (Float)
55 SDIO_CMD SDIO Command
56 SDIO_CLK SDIO Clock
57 SDIO_DATA_0 SDIO Data 0
58 SDIO_DATA_3 SDIO Data 3
59 SDIO_DATA_1 SDIO Data 1
60 GND Ground
Interface Notes
 Bluetooth coexistence – BT coexistence can be turned on or off in the SROM using the Summit
Manufacturing Utility, or SMU. BT coexistence is through a three-wire interface with one additional
reserved wire:
- Pin 22: WLAN_ACTIVE – Driven by the Summit radio and is asserted when the transmitter of the
Summit radio is active.
- Pin 36: BT_ACTIVE – An input to the Summit radio. The Summit radio does not transmit if
BT_ACTIVE is asserted. The Summit radio expects the Bluetooth radio to assert (raise high)
BT_ACTIVE when it is transmitting and to refrain from transmitting when WLAN_ACTIVE is
asserted.
- Pin 3: BT_Priority – When high, Bluetooth is transmitting or receiving high priority packets.
- Pin 4: BT_Frequency – Asserted (logic high) when the Bluetooth transceiver hops into the
restricted channels defined by the coexistence mechanism.
A Summit customer must provide any “glue” logic between the Summit radio and the Bluetooth
radio to make sure that the interface is utilized properly.
 Pin 8: Although the pin is present, Wake on Wireless is not currently supported in the software.
 Pin 29: The VCC_Slot0 pin will appear with the ES5 samples and production versions.