WM8900LGEFK/RV Wolfson Microelectronics, WM8900LGEFK/RV Datasheet - Page 74

• Manufacturer Part Number: WM8900LGEFK/RV
• Description: Audio CODECs Ultra Low Power Hi-Fi CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8900LGEFK/RV

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

WM8900
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Table 54 8-bit Companded Word Composition
Figure 44 µ-Law Companding
Figure 45 A-Law Companding
LOOPBACK
Setting the LOOPBACK register bit enables digital loopback. When this bit is set, the output data
from the ADC audio interface is fed directly into the DAC data input interface.
Table 55 Loopback Control
R5 (05h)
Audio
Interface 2
REGISTER
ADDRESS
120
100
80
60
40
20
120
100
0
80
60
40
20
0
0
0
SIGN
BIT7
0.1
0
BIT
0.2
0.2
LOOPBACK
LABEL
0.3
A-law Companding
u-law Companding
0.4
Normalised Input
0.4
Normalised Input
EXPONENT
BIT[6:4]
0
DEFAULT
0.5
0.6
0.6
Digital Loopback Function
0 = No loopback.
1 = Loopback enabled, ADC data
output is fed directly into DAC data
input.
0.7
0.8
0.8
PD, August 2008, Rev 4.0
MANTISSA
DESCRIPTION
BIT[3:0]
0.9
Production Data
1
1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
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