WM8983GEFL/RV Wolfson Microelectronics, WM8983GEFL/RV Datasheet - Page 83

• Manufacturer Part Number: WM8983GEFL/RV
• Description: Audio CODECs Mbl Multimedia CODEC w/ 1W Speaker Driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8983GEFL/RV

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C

Production Data
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Table 55 Audio Interface Control
Note: Right Justified Mode will only operate with a maximum of 24 bits. If 32-bit mode is selected the
device will operate in 24-bit mode.
AUDIO INTERFACE CONTROL
The register bits controlling audio format, word length and master / slave mode are summarised
below.
Register bit MS selects audio interface operation in master or slave mode. In Master mode BCLK
and LRC are outputs. The frequencies of BCLK and LRC in master mode are controlled using
MCLKDIV; these clocks are divided down versions of PLL output clock (SYSCLK). The MCLKDIV
default setting provides a SYSCLK/256 division rate for the LRC output clock.
It is possible to divide down the BCLK rate using BCLKDIV; care must be taken in choosing the
correct BCLKDIV rate to maintain sufficient BCLK pulses per LRC period for the chosen data word
length. The BCLKDIV default setting provides a BCLK = SYSCLK clock.
R4
Audio
Interface
Control
R5
REGISTER
ADDRESS
0
1
2
4:3
6:5
7
8
0
BIT
MONO
ADCLRSWAP
DACLRSWAP
FMT
WL
LRP
BCP
LOOPBACK
LABEL
0
0
0
10
10
0
0
0
DEFAULT
Selects between stereo and mono
device operation:
0 = Stereo device operation
1 = Mono device operation. Data
appears in ‘left’ phase of LRC.
Controls whether ADC data appears in
‘right’ or ‘left’ phases of LRC clock:
0=ADC left data appear in ‘left’ phase of
LRC and right data in 'right' phase
1=ADC left data appear in ‘right’ phase
of LRC and right data in 'left' phase
Controls whether DAC data appears in
‘right’ or ‘left’ phases of LRC clock:
0=DAC left data appear in ‘left’ phase of
LRC and right data in 'right' phase
1=DAC left data appear in ‘right’ phase
of LRC and right data in 'left' phase
Audio interface Data Format Select:
00=Right Justified
01=Left Justified
10=I
11= DSP/PCM mode
Word length
00=16 bits
01=20 bits
10=24 bits
11=32 bits (see note)
LRC clock polarity
0=normal
1=inverted
BCLK polarity
0=normal
1=inverted
Digital loopback function
0=No loopback
1=Loopback enabled, ADC data output
is fed directly into DAC data input.
2
S format
DESCRIPTION
PD Rev 4.0 November 2006
WM8983
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