WM8740
Production Data
POLARITY OF LR INPUT CLOCK
The left channel data for a particular sample instant is always input first, then the right channel data.
LRP
(REG3, B1)
L
LR High – left channel
LR Low – right channel
LR Low – left channel
LR High – right channel
H
Table 12 Polarity of LR Input Clock
INDIVIDUAL OR COMMON ATTENUTATION CONTROL
ATC
(REG3, B2)
L
Individual control
H
Common control from Reg0
Table 13 Individual or Common Attenuation Control
DIGITAL FILTER ROLL-OFF SELECTION
SRO
(REG3, B3)
L
Sharp
Slow
H
Table 14 Digital Filter Roll-Off Selection
ANALOGUE OUTPUT POLARITY REVERSAL
REV
(REG3, B4)
L
Normal
H
Inverted
Table 15 Analogue Output Polarity Reversal
DE-EMPHASIS SAMPLE RATE
SF1
SF0
SAMPLE RATE
(REG3, B7)
(REG3, B6)
0
0
1
1
0
1
0
1
No de-emphasis
48kHz
44.1kHz
32kHz
Table 16 De-Emphasis Sample Rate
INFINITE ZERO DETECT
IZD
(REG3, B8)
L
Zero detect mute off
Zero detect mute on
H
Table 17 Infinite Zero Detect
PD Rev 4.0 April 2004
15
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
