WM8580AGEFTRV WOLFSON [Wolfson Microelectronics plc], WM8580AGEFTRV Datasheet - Page 74
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WM8580AGEFTRV
Manufacturer Part Number
WM8580AGEFTRV
Description
Multichannel CODEC with S/PDIF Transceiver
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8580AGEFTRV.pdf
(97 pages)
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Table 74 MUTE Pin Control Options
PRIMARY AUDIO INTERFACE (TX) MASTER MODE CONTROL
In Hardware Control Mode, the SDIN pin is used to enable the master mode function on the Primary
Audio Interface transmitter. This has the same operation as the PAIFTX_MS register bit. The
PAIFTX_RATE default settings of 256fs, and 64 BCLKs/LRCLK for BCLKSEL, are used in Hardware
Control Mode. See section headed “DIGITAL AUDIO INTERFACES” for more information on master
mode operation.
Table 75 Audio Interface (Transmitter) Master Mode Hardware Mode Control
S/PDIF ERROR HANDLING
Should the incoming S/PDIF sub-frame contain a parity error or a bi-phase encoding error, it is
assumed the sub-frame has become corrupted. Similarly, if VALIDITY is detected as 1, it is assumed
the data within the S/PDIF frame is invalid. Under these conditions, the S/PDIF Receiver repeats the
last valid sample in place of the corrupted/invalid samples. (Note: For the S/PDIF receiver to S/PDIF
transmitter path, only VALIDITY errors will cause data to be overwritten – parity and bi-phase errors
have will not cause data to be overwritten).
POWERDOWN CONTROL
In Software Control Mode, the chip is powered-down by default. In Hardware Control Mode, the chip
is powered-up by default but can be powered down by setting the ALLPD(MFP7) input high. (Note
that in Software Control Mode, this pin takes the function of SAIF_LRCLK or GPO7).
Table 76 Hardware Mode Powerdown Control
Floating
Powerup
MUTE
0
1
0
ALLPD (MFP7)
SDIN
0
1
Normal Operation
Mute DAC channels
MUTE is an output to indicate when Zero Detection occurs on all DACs
(ZFLAG).
H = detected, L = not detected.
Powerdown
1
AUDIO INTERFACE (TX)
Master
Slave
DESCRIPTION
PD Rev 4.3 August 2007
Production Data
74
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