BC41B143A-ANN-E4 ETC, BC41B143A-ANN-E4 Datasheet - Page 71
BC41B143A-ANN-E4
Manufacturer Part Number
BC41B143A-ANN-E4
Description
Bluecore 4-rom CSP EDR Single Chip Bluetooth v2.0 + EDR System
Manufacturer
ETC
Datasheet
1.BC41B143A-ANN-E4.pdf
(89 pages)
- Current page: 71 of 89
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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.
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
PCM_OUT
PCM_OUT
PCM_OUT
PCM_OUT
1
1
1
1
Extension
Sign
2
2
2
2
Figure 11.23: 16-Bit Slot Length and Sample Formats
This material is subject to CSR’s non-disclosure agreement
3
3
3
3
A 16-bit slot with 8-bit companded sample and sign extension selected.
A 16-bit slot with 13-bit linear sample and audio gain selected.
A 16-bit slot with 8-bit companded sample and zeros padding selected.
A 16-bit slot with 13-bit linear sample and sign extension selected.
Extension
4
4
4
4
Sample
Sign
8-Bit
© Cambridge Silicon Radio Limited 2005
5
5
5
5
6
6
6
6
Production Information
Sample
13-Bit
7
7
7
7
8
8
8
8
9
9
9
9
Sample
13-Bit
10
10
10
10
11
11
11
11
12
12
12
12
Padding
Sample
Zeros
8-Bit
13
13
13
13
Device Terminal Descriptions
14
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Audio
Gain
15
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16
16
16
16
Page 71 of 89
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