User's Manual

BSM-700 Specification Page 17/31 2014/03/31
LTC Network Access Confidential
4 Interface Specifications
4.1 UART Interface
Parameter
Possible Values
Baud rate
Minimum
1200 baud (≤2%Error)
9600 baud (≤1%Error)
Maximum
4M baud (≤1%Error)
Parity None, Odd or Even
Number of stop bits
1 or 2
Bits per byte
8
4.2 USB Interface
BSM-700 has a full-speed (12Mbps) USB interface for communicating with other compatible digital devices.
The USB interface on BSM-700 acts as a USB peripheral, responding to requests from a master host
controller.BSM-700 supports the Universal Serial Bus Specification, Revision v2.0 (USB v2.0 Specification)
4.3 Digital Audio Interface
The audio PCM interface on the BSM-700 supports:
 On-chip routing to Kalimba DSP
 Continuous transmission and reception of PCM encoded audio data over Bluetooth.
 Processor overhead reduction through hardware support for continual transmission and reception of PCM
data.
 A bidirectional digital audio interface that routes directly into the baseband layer of the firmware.
 Hardware on BSM-700 for sending data to and from a SCO connection.
 PCM interface master, generating PCM_SYNC and PCM_CLK.
 PCM interface slave, accepting externally generated PCM_SYNC and PCM_CLK.
 Various clock formats including:
 Long Frame Sync
 Short Frame Sync
 GCI timing environments
 13-bit or 16-bit linear, 8-bit μ-law or A-law companded sample formats.
 Receives and transmits on any selection of 3 of the first 4 slots following PCM_SYNC.