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Si3050-EVB
Figure 2. Si3050PPT-EVB Evaluation Software in the DSP Mode Control and
RCV Source Control View
5.2. DSP Mode and RCV Source Control
View
The user interface in the DSP Mode and RCV Source
Control view for the Si3050PPT_EVB software is shown
in Figure 2. This figure shows the DAA’s mode of
communication and RCV source for each channel when
the application is launched.
DSP Mode Control
DSP mode control is described in the following list:
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PCLK Frequency : Selects the frequency of the
PCLK in PCM mode from 256 kHz to 8.192 MHz in
power of 2.
SCLK Frequency : Selects the frequency of the
SCLK from 256 kHz to 8.192 MHz in power of 2.
SPI Mode : Selects the length of CS to either 8-bit or
16-bit.
GCI Clock Mode : Selects the frequency and clock
mode of PCLK in GCI mode from either 1x
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Format : Selects the format of the audio data to be
transmitted over PCM or GCI bus. By changing the
format, the software will automatically execute a
write to DAA Register 33 PCMF bits or DAA
Register 44 GCIF bits.
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?
2.048 MHz or 2x 4.096 MHz.
GCI Subframe : Selects the subframe in GCI mode
with which to communicate.
B-Channel : Selects the B channel desired during
GCI communication.
?
?
DAA Interface Mode : Selects the mode of operation
of the DAA from SPI/PCM, SPI/BNC, GCI, or GCI/
BNC. Upon startup, this mode will reflect the “format”
and “source” jumper selection on the SiLink (mother)
board. The selection made via the jumper can be
overwritten here.
PCM Clock Mode : Selects the clock mode of PCM
from 1x to 2x.
Changes in the DSP Mode panel will not take effect until
assertion of the “Reset & Reinitialize the System”
button.
5.2.1. RCV Source Control
RCV Source Control utilizes the daisy-chain capability
of the DAA in SPI/PCM communication mode. RCV
source determines the source of audio data for each
device on the SiLink board.
Changes in RCV source will not take effect until
assertion of the “Update RCV Source” button.
6
Rev. 1.1
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