UGWKNEMCSA1-EK Unigen Corp, UGWKNEMCSA1-EK Datasheet - Page 38

• Manufacturer Part Number: UGWKNEMCSA1-EK
• Description: EVALUATION KIT NEMO
• Manufacturer: Unigen Corp
• Series: Nemor
• Type: Bluetooth 802.15.1r

Specifications of UGWKNEMCSA1-EK

• Frequency: 2.4GHz
• For Use With/related Products: Nemo
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 784-1041

Solutions for a Real Time World
Digital Audio Interface (I²S)
The digital audio interface supports the industry standard formats for I²S, left-justified (LJ) or
right-justified (RJ). The interface shares the same pins as the PCM interface, which means each
audio bus is mutually exclusive in its usage. Table 7 lists these alternative functions.
Table 8 describes the values for the PS Key (PSKEY_DIGITAL_AUDIO_CONFIG) that is used to
set-up the digital audio interface. For example, to configure an I²S interface with 16-bit SD data
set PSKEY_DIGITAL_CONFIG to
0x0406.
Re-Tek - 1573
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Copyright Unigen Corporation, 2008
Bit
D[0]
D[1]
D[2]
D[3]
D[7:4]
Mask
0x0001
0x0002
0x0004
0x0008
0x00F0
Table 9: Alternative Functions of the Digital Audio Bus Interface on the PCM Interface
Name
CONFIG_JUSTIFY_FORMAT
CONFIG_LEFT_JUSTIFY_DELAY
CONFIG_CHANNEL_POLARITY
CONFIG_AUDIO_ATTEN_EN
CONFIG_AUDIO_ATTEN
BT_PCM_SYNC_P
BT_PCM_TXD_P
BT_PCM_RXD_P
BT_PCM_CLK_P
PCM Interface
Table 10: PSKEY_DIGITAL_AUDIO_CONFIG
NEMO Bluetooth Radio Module
- 38 -
I²S Interface
SD_OUT
SD_IN
Description
0 for left justified, 1 for right
justified.
For left justified formats: 0 is MSB of
SD data occurs in the first SCLK
period following WS transition. 1 is
MSB of SD data occurs in the second
SCLK period.
For 0, SD data is left channel when
WS is high. For 1 SD data is right
channel.
For 0, 17 bit SD data is rounded
down to 16 bits. For 1, the audio
attenuation defined in
CONFIG_AUDIO_ATTEN is applied
over 24 bits with saturated rounding.
Requires CONFIG_16_BIT_CROP_EN
to be 0.
Attenuation in 6 dB steps.
SCK
WS
45388 Warm Springs Blvd. Fremont, CA 94539
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Datasheet