CSR BlueCore ADK 3.0, Руководство пользователя

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© Cambridge Silicon Radio Limited 2014 CS-310152-UGP1
www.csr.com
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For example
0001 0010 2806 021e 0000 0008 0000 00ff bb80 bb80 0100
Where:

Plug-in Type : Specifies which I²S plug-in to use, currently available options are:

0 = User defined using PSKEY_USR 36 and PSKEY_USR37

1 = SSM_2518 CSR I²S development board

2 = Customer developed plug-in

Master or Slave Operation : Specifies master or slave operation:

0 = slave

1 = master

Left or right Justified I²S : Choose between left justified and I²S data:

0 = left justified data format

1 = right justified data format

Justified Data Delay by 1 Bit : The I²S data can be delayed by 1bit:

0 = no delay of I²S data output

1 = 1 bit delay of I²Sdata output

Bits Per Sample : Specifies the number of bits in each audio sample, defaults to 16.

USR Data Key Length : Specifies the length of raw data commands PSKEY_USR37 in words.

No of init I²C Commands : Specifies how many I²C initialisation commands are specified in
PSKEY_USR37.

No of I²C Volume Commands : Specifies the number of individual I²C volume commands that will be
sent to the I²S capable device every time a volume change is made.

Volume Commands Offset : Specifies the offset in words of the first I²C volume command in the
PSKEY_USR37.

No of I²C Shutdown Commands : Specifies the number of individual I²C commands that will be sent to
the I²S capable device every time the device is hut down, i.e. close of SCO or A2DP media stream.

Shutdown Commands Offset : Specifies the offset in words of the first I²C volume command in the
PSKEY_USR37.

Volume No of Bits : Specifies the number of bits of the volume setting in the I²C command, default is
8bits.

Volume Range Max : Specifies the maximum volume value that will be sent to the I²S device to indicate
maximum output level.

Volume Range Min : Specifies the minimum volume value that will be sent to the I²S device to indicate
minimum output level.

Music Resampling Frequency : Specifies whether the music (A2DP codecs, USB, wired audio) output
rate needs to be resampled to a fixed rate, a value of 0 indicates no resampling is performed, otherwise
specify the required output frequency, e.g. 48000.

Voice Resampling Frequency : Sspecifies whether the voice (CVC, tones, voice prompts) output rate
needs to be resampled to a fixed rate, a value of 0 indicates no resampling is performed, otherwise
specify the required output frequency, e.g. 48000.

Master Clock Scaling Factor : Specifies the scaling factor for the I²S master clock.