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BT830 Hardware Integration Guide
Version 1.3
Short Frame Sync
In Short Frame Sync, the falling edge of PCM_SYNC indicates the start of the PCM word. PCM_SYNC is always one
clock cycle long.
Figure 5: Short Frame Sync (Shown with 16-bit Sample)
As with Long Frame Sync, BT830 samples PCM_IN on the falling edge of PCM_CLK and transmits PCM_OUT on the
rising edge. PCM_OUT is configurable as high impedance on the falling edge of PCM_CLK in the LSB position or on
the rising edge.
Multi-Slot Operation
More than one SCO connection over the PCM interface is supported using multiple slots. Up to three SCO
connections are carried over any of the first four slots.
Figure 6: Multi-slot operation with 2 Slots and 8-bit companded samples
GCI Interface
BT830 is compatible with the GCI, a standard synchronous 2B+D ISDN timing interface. The two 64 kbps B channels
are accessed when this mode is configured.
Figure 7: Multi-slot operation
The start of frame is indicated by the rising edge of PCM_SYNC and runs at 8 kHz.
Embedded Wireless Solutions Support Center:
15
Laird Technologies
http://ews-support.lairdtech.com
Americas: +1-800-492-2320
Europe: +44-1628-858-940
www.lairdtech.com/bluetooth
Hong Kong: +852-2923-0610
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