WM8941GEFL/RV Wolfson Microelectronics, WM8941GEFL/RV Datasheet - Page 60

• Manufacturer Part Number: WM8941GEFL/RV
• Description: Audio CODECs Mono CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8941GEFL/RV

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8941
w
Figure 36 DSP/PCM Mode Audio Interface (Mode A, FRAMEP=0)
Figure 37 DSP/PCM Mode Audio Interface (Mode B, FRAMEP=1)
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 FRAME are outputs. The frequency of BCLK and FRAME in master mode are controlled with
BCLKDIV. These are divided down versions of master clock. This may result in short BCLK pulses
at the end of a frame if there is a non-integer ratio of BCLKs to FRAME clocks.
DACDAT /
ADCDAT
BCLK
LRC
MSB
1
2
1 BCLK
3
Input Word Length (WL)
LEFT CHANNEL
n-2 n-1
falling edge can occur anywhere in this area
LSB
n
1
2
3
RIGHT CHANNEL
1/fs
n-2 n-1
n
PP, Rev 3.3, December 2007
1 BCLK
Pre Production
60