BC352239A Datasheet, PDF (80/116 Pages) List of Unclassifed Manufacturers – BlueCore 3-Multimedia External

Device Terminal Descriptions
8.8.13 Multi Slot Operation
More than one SCO connection over the PCM interface is supported using multiple slots. Up to three SCO
connections can be carried over any of the first four slots.
LONG_PCM_SYNC
Or
SHORT_PCM_SYNC
PCM_CLK
PCM_OUT
1 2 3 4 5 6 78 1 2 3 4 5 6 78
PCM_IN Do Not Care 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Do Not Care
Figure 8.15: Multi Slot Operation with Two Slots and 8-bit Companded Samples
8.8.14 GCI Interface
BlueCore3-Multimedia External is compatible with the General Circuit Interface, a standard synchronous 2B+D
ISDN timing interface. The two 64Kbps B channels can be accessed when this mode is configured.
PCM_SYNC
PCM_CLK
PCM_OUT
1 2 3 4 5 6 78 1 2 3 4 5 6 7 8
PCM_IN
Do Not
C a re
1
23 4 5 67 8 1 2 34 5 6
B1 Channel
B2 Channel
Figure 8.16: GCI Interface
7
8
Do Not
C a re
The start of frame is indicated by the rising edge of PCM_SYNC and runs at 8kHz. With
BlueCore3-Multimedia External in Slave mode, the frequency of PCM_CLK can be up to 4.096MHz.
BC352239A-ds-001Pc
© Cambridge Silicon Radio Limited 2004
Production Information
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