WM8983GEFL/RV Wolfson Microelectronics, WM8983GEFL/RV Datasheet - Page 45

• 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
w
R34 (22h)
ALC Control
3
REGISTER
ADDRESS
7:4
8
7:4
3:0
BIT
ALCHLD
[3:0]
ALCMODE
ALCDCY
[3:0]
ALCATK
[3:0]
LABEL
0000
(0ms)
0
0011
(13ms/6dB)
0011
(2.9ms/6dB)
0010
(832us/6dB)
DEFAULT
ALC hold time before gain is
increased.
0000 = 0ms
0001 = 2.67ms
0010 = 5.33ms
0011 = 10.66ms
0100 = 21.32ms
0101 = 42.64ms
0110 = 85.28ms
0111 = 0.17s
1000 = 0.34s
1001 = 0.68s
1010 = 1.36s
1011 = 2.7s
1100 = 5.4s
1101 = 10.9s
1110 = 21.8 s
1111 = 43.7s
Determines the ALC mode of
operation:
0 = ALC mode (Normal Operation)
1 = Limiter mode.
Decay (gain ramp-up) time
(ALCMODE ==0)
0000
0001
0010
… (time doubles with every step)
1010
or
higher
Decay (gain ramp-up) time
(ALCMODE ==1)
0000
0001
0010
… (time doubles with every step)
1010
ALC attack (gain ramp-down) time
(ALCMODE == 0)
0000
0001
0010
… (time doubles with every step)
1010
or
higher
Per
step
410us
820us
1.64ms
420ms
Per
step
90.8us
181.6us
363.2us
93ms
Per
step
104us
208us
416us
106ms
DESCRIPTION
PD Rev 4.0 November 2006
Per
6dB
3.3ms
6.6ms
13.1ms
3.36s
Per
6dB
726.4us
1.453ms
2.905ms
744ms
Per
6dB
832us
1.66ms
3.32ms
852ms
WM8983
90% of
range
24ms
48ms
192ms
24.576s
90% of
range
5.26ms
10.53
ms
21.06
ms
5.39s
90% of
range
6ms
12ms
24.1ms
6.18s
45