WM8985GEFL Wolfson Microelectronics, WM8985GEFL Datasheet - Page 104

• Manufacturer Part Number: WM8985GEFL
• Description: Audio CODECs Multimedia CODEC with Class D HP
• Manufacturer: Wolfson Microelectronics

Specifications of WM8985GEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8985
w
34 (22h)
35 (23h)
36 (24h)
REGISTER
ADDRESS
8
7:4
3:0
8:4
3
2:0
8:5
BIT
ALCMODE
ALCDCY
[3:0]
ALCATK
NGEN
NGTH
LABEL
0
0011
0011
0010
0010
00000
0
000
0000
DEFAULT
Determines the ALC mode of operation:
0=ALC mode
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
ALC attack (gain ramp-down) time
(ALCMODE == 1)
0000
0001
0010
… (time doubles with every step)
1010
Reserved. Initialise to 0
ALC Noise gate function enable
1 = enable
0 = disable
ALC Noise gate threshold:
000=-39dB
001=-45dB
010=-51db
… (6dB steps)
111=-81dB
Reserved. Initialise to 0
Per step
410us
820us
1.64ms
420ms
Per step
90.8us
181.6us
363.2us
93ms
Per step
104us
208us
416us
106ms
Per step
22.7us
45.4us
90.8us
23.2ms
DESCRIPTION
Per 6dB
3.3ms
6.6ms
13.1ms
3.36s
Per 6dB
726.4us
1.453ms
2.905ms
744ms
Per 6dB
832us
1.664ms
3.328ms
852ms
Per 6dB
182.4us
363.2us
726.4us
186ms
90% of range
24ms
48ms
192ms
24.576s
90% of range
5.26ms
10.53ms
21.06ms
5.39s
90% of range
6ms
12ms
24.1ms
6.18s
90% of range
1.31ms
2.62ms
5.26ms
1.348s
PD, Rev 4.6, July 2009
Input Limiter/
Automatic
Level Control
(ALC)
Input Limiter/
Automatic
Level Control
(ALC)
Input Limiter/
Automatic
Level Control
(ALC)
Input Limiter/
Automatic
Level Control
(ALC)
Input Limiter/
Automatic
Level Control
(ALC)
Production Data
REFER TO
104