WM8900LGEFK/RV Wolfson Microelectronics, WM8900LGEFK/RV Datasheet - Page 79

• 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

Production Data
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In Slave Mode, BCLK is generated externally and appears as an input to the CODEC. The host
device must provide sufficient BCLK cycles to transfer complete data words to the ADCs and
DACs.
See “Digital Audio Interface” for details of Master/Salve operation. See “Audio Interface Control” for
further details of how BCLK is configured as an input or output.
BCLK_DIV = 32 (1101) is not available in USB mode (AIF_LRCLKRATE = 1).
Table 59 BCLK Control
Notes
1. Not available in USB mode (AIF_LRCLKRATE = 1).
Table 60 shows the maximum word lengths supported for a given SYSCLK and BCLK_DIV,
assuming that one or both the ADCs and DACs are running at maximum rate.
R6 (06h)
Clocking 1
11.2896 MHz
12.288 MHz
REGISTER
ADDRESS
SYSCLK
4:1
0000 = SYSCLK / 1
0001 = SYSCLK / 1.5
0010 = SYSCLK / 2
0011 = SYSCLK / 3
0100 = SYSCLK / 4
0101 = SYSCLK / 5.5
0110 = SYSCLK / 6
0111 = SYSCLK / 8
1000 = SYSCLK / 11
1001 = SYSCLK / 12
1010 = SYSCLK / 16
1011 = SYSCLK / 22
1100 = SYSCLK / 24
1101 = SYSCLK / 32
1110 = SYSCLK / 32
1111 = SYSCLK / 32
0000 = SYSCLK / 1
0001 = SYSCLK / 1.5
0010 = SYSCLK / 2
0011 = SYSCLK / 3
0100 = SYSCLK / 4
BIT
BCLK DIVIDER
BCLK_DIV
BCLK_DIV
[3:0]
LABEL
0000
12.288
8.192
6.144
4.096
3.072
2.2341818
2.048
1.536
1.117091
1.024
0.768
0.558545
0.512
0.384
0.384
0.384
11.2896
7.5264
5.6448
3.7632
2.8224
DEFAULT
(MASTER MODE)
BCLK RATE
(MHz)
BCLK Frequency (Master Mode)
0000 = SYSCLK
0001 = SYSCLK / 1.5
0010 = SYSCLK / 2
0011 = SYSCLK / 3
0100 = SYSCLK / 4
0101 = SYSCLK / 5.5
0110 = SYSCLK / 6
0111 = SYSCLK / 8
1000 = SYSCLK / 11
1001 = SYSCLK / 12
1010 = SYSCLK / 16
1011 = SYSCLK / 22
1100 = SYSCLK / 24
1101 = SYSCLK / 32 (see note 1)
1110 = SYSCLK / 44
1111 = SYSCLK / 48
PD, August 2008, Rev 4.0
32
32
32
32
32
20
20
16
8
8
8
N/A
N/A
N/A
N/A
N/A
32
32
32
32
32
MAXIMUM WORD LENGTH
DESCRIPTION
WM8900
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