WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 99

• 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

Production Data
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The DSP clocking is enabled by CLK_DSP_ENA; see Table 61 for details of this register.
Table 62 Automatic Clocking Configuration Control
Table 63 Sample Rate Decoder Control
The clock division ratios available with CLK_SYS_MODE = 00 are suitable for use with standard
audio master clocks. For example, with a 12.288MHz CLK_SYS and 48kHz sample rate, the
CLK_SYS to fs ratio is 256. In this case, the required setting for CLK_SYS_RATE is 0011, as shown
above.
R21 (15h)
Clock Rates 1
REGISTER
ADDRESS
1010 to 1111
Available CLK_SYS / f
13:10
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
BIT
9:8
3:0
CLK_SYS_RAT
E [3:0]
CLK_SYS_MOD
E [1:0]
SAMPLE_RATE
[3:0]
LABEL
(default)
1024
1408
1536
128
192
256
384
512
768
00
64
CLK_SYS_MODE
s
Reserved
DEFAULT
ratios
1088
1496
1632
0011
1000
136
204
272
408
544
816
00
01
(USB modes)
68
CLK_SYS_RATE and
CLK_SYS_MODE together
determine the clock division ratio
(CLK_SYS / fs); see Table 63
Selects the Sample Rate (fs)
0000 = 8kHz
0001 = 11.025kHz
0010 = 12kHz
0011 = 16kHz
0100 = 22.05kHz
0101 = 24kHz
0110 = 32kHz
0111 = 44.1kHz
1000 = 48kHz
1001 = 88.2kHz (Not available for
Digital Microphone. Not used for
88.2kHz ADC.)
1010 = 96kHz (Not available for
Digital Microphone. Not used for
96kHz ADC)
1011 to 1111 = Reserved
If the desired sample rate is not
listed in this table, then the closest
alternative should be chosen.
1000
1000
1500
125
125
250
250
375
500
750
10
PD, Rev 4.0, September 2010
DESCRIPTION
WM8903
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