wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 119

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

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Pre-Production
These registers are described in Table 70 below.
Table 70 Audio Interface Output Function Control
OPERATION WITH TDM
Time division multiplexing (TDM) allows multiple devices to transfer data simultaneously on the same
bus. The WM8400 ADCs and DACs support TDM in master and slave modes, on both interfaces,
and for all data formats and word lengths. TDM is enabled using register bits AIFADC_TDM and
AIFDAC_TDM. The TDM data slot is programmed using register bits AIFADC_TDM_CHAN and
AIFDAC_TDM_CHAN.
R9 (09h)
R10 (0Ah)
REGISTER
ADDRESS
15
14
13
11
15
14
11
BIT
AIF_MSTR1
AIF_MSTR2
AIF_SEL
ADCLRC_DIR
ALRCGPIO1
ALRCBGPIO6
DACLRC_DIR
LABEL
0b
0b
0b
0b
0b
0b
0b
DEFAULT
Audio Interface 1 Master Mode Select
0 = Slave mode
1 = Master mode
Audio Interface 2 Master Mode Select
0 = Slave mode
1 = Master mode
0 = Audio interface 1
1 = Audio interface 2 (GPIO3/BCLK2,
GPIO4/DACLRC2, GPIO5/DACDAT2)
ADCLRC Direction
(Forces ADCLRC clock to be output in
slave mode)
0 = ADCLRC normal operation
1 = ADCLRC clock output enabled
ADCLRC/GPIO1 Pin Function Select
0 = ADCLRC pin
1 = GPIO1 pin (ADCLRC connected to
DACLRC internally)
GPIO6/ADCLRCB Pin Function Select
0 = GPIO6 pin
1 = Inverted ADCLRC clock output
DACLRC Direction
(Forces DACLRC clock to be output in
slave mode)
0 = DACLRC normal operation
1 = DACLRC clock output enabled
Audio Interface Select
DESCRIPTION
PP, April 2009, Rev 3.0
WM8400
119