NAU8812EVB Nuvoton Technology Corporation of America, NAU8812EVB Datasheet - Page 55

• Manufacturer Part Number: NAU8812EVB
• Description: BOARD EVAL FOR NAU8812
• Manufacturer: Nuvoton Technology Corporation of America
• Series: emPowerAudio™r

Specifications of NAU8812EVB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

In PCM interface (normal mode), the left channel serial audio data is synchronized with the frame sync. Left channel
data is transferred during the LOW frame sync. The MSB data is sampled first. The data is latched on the second
rising edge of BCLK following a frame sync transition (FS). PCM format is selected by setting AIFMT[4:3] address
(0x04) to “11” binary in conjunction with PCMTSEN[8] address (0x3C) set to LOW.
The digital data can be forced to appear on the right phase of the FS by setting ADCPHS[0] and DACPHS[1]
address (0x04) bits to HIGH respectively. The starting point of the right phase data depends on the word length
WLEN[6:5] address (0x04) after the frame sync transition (FS).
NAU8812 features a special mode where the device outputs Left channel data to both Left and Right channels. This
is accomplished by setting LOUTR[2] address (0x3C) to “1”
emPowerAudio
Datasheet Revision 2.0
ADCOUT
ADCOUT
DACIN/
BCLK
BCLK
12.10.4. PCM audio data
FS
FS
™
1 BCLK
1 BCLK
MSB
MSB
1
Word Length, WLEN[6:5]
1
Word Length, WLEN[6:5]
LEFT CHANNEL
LEFT CHANNEL
2
2
Figure 38: PCM Mode Audio Interface (Special mode)
Figure 37: PCM Mode Audio Interface (Normal Mode)
N-1 N
N-1 N
LSB
LSB
MSB
Page 55 of 109
1
Word Length, WLEN[6:5]
RIGHT CHANNEL
2
N-1 N
LSB
NAU8812
January 2011