WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 130

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8903
R41 (29h)
DRC 1
Register 29h DRC 1
w
REGISTER
ADDRESS
15:12 DRC_ATTACK_RATE[3:0]
11:8
BIT
7:6
5:4
3:2
1:0
DRC_DECAY_RATE[3:0]
DRC_THRESH_QR[1:0]
DRC_RATE_QR[1:0]
DRC_MAXGAIN[1:0]
DRC_MINGAIN[1:0]
LABEL
DEFAULT
0011
0010
01
00
00
01
Gain attack rate (seconds/6dB)
0000 = instantaneous
0001 = 363us
0010 = 726us
0011 = 1.45ms (default)
0100 = 2.9ms
0101 = 5.8ms
0110 = 11.6ms
0111 = 23.2ms
1000 = 46.4ms
1001 = 92.8ms
1010 = 185.6ms
1011-1111 = Reserved
Gain decay rate (seconds/6dB)
0000 = 186ms
0001 = 372ms
0010 = 743ms (default)
0011 = 1.49s
0100 = 2.97s
0101 = 5.94s
0110 = 11.89s
0111 = 23.78s
1000 = 47.56s
1001-1111 = Reserved
Quick release crest factor threshold
00 = 12dB
01 = 18dB (default)
10 = 24dB
11 = 30dB
Quick release decay rate (seconds/6dB)
00 = 0.725ms (default)
01 = 1.45ms
10 = 5.8ms
11 = Reserved
Minimum gain the DRC can use to attenuate
audio signals
00 = 0dB (default)
01 = -6dB
10 = -12dB
11 = -18dB
Maximum gain the DRC can use to boost
audio signals
00 = 12dB
01 = 18dB (default)
10 = 24dB
11 = 36dB
DESCRIPTION
PP, Rev 3.1, August 2009
Pre-Production
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