User Manual

Bluegiga Proprietary Version 1.0
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As with Long Frame Sync, WRAP THOR 2022-1 samples PCM_IN on the falling edge of
PCM_CLK and transmits PCM_OUT on the rising edge. PCM_OUT may be configured to be high
impedance on the falling edge of PCM_CLK in the LSB position or on the rising edge.
12.3 M
ULTI-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.
Figure 20: Multi-slot Operation with Two Slots and 8-bit Companded Samples
12.4 GCI I
NTERFACE
WRAP THOR 2022-1 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. In the GCI interface two clock cycles are required for each bit of the voice sample. The
voice sample format is 8-bit companded. As for the standard PCM interface up to 3 SCO
connections can be carried over the first four slots.
Figure 21: CGI Interface