BC41B143A-DS-002PD Datasheet, PDF (71/89 Pages) List of Unclassifed Manufacturers – BlueCore 4-ROM CSP EDR Single Chip Bluetooth v2.0 + EDR System

Device Terminal Descriptions
11.7.6 Slots and Sample Formats
BlueCore4-ROM CSP can receive and transmit on any selection of the first four slots following each sync pulse.
Slot durations can be either 8 or 16 clock cycles. Durations of 8 clock cycles can only be used with 8-bit sample
formats. Durations of 16 clocks can be used with 8, 13 or 16-bit sample formats.
BlueCore4-ROM CSP supports 13-bit linear, 16-bit linear and 8-bit μ-law or A-law sample formats. The sample
rate is 8ksamples/s. The bit order can be little or big-endian. When 16-bit slots are used, the 3 or 8 unused bits in
each slot can be filled with sign extension, padded with zeros or a programmable 3-bit audio attenuation
compatible with some Motorola CODECs.
PCM_OUT
Sign
Extension
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
8-Bit
Sample
A 16-bit slot with 8-bit companded sample and sign extension selected.
PCM_OUT
8-Bit
Sample
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Zeros
Padding
A 16-bit slot with 8-bit companded sample and zeros padding selected.
PCM_OUT
Sign
Extension
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
13-Bit
Sample
A 16-bit slot with 13-bit linear sample and sign extension selected.
PCM_OUT
13-Bit
Sample
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Audio
Gain
A 16-bit slot with 13-bit linear sample and audio gain selected.
Figure 11.23: 16-Bit Slot Length and Sample Formats
11.7.7 Additional Features
BlueCore4-ROM CSP has a mute facility that forces PCM_OUT to be 0. In Master mode, PCM_SYNC may also
be forced to 0 while keeping PCM_CLK running which some CODECS use to control power down.
BC41B143A-ds-002Pd
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