WM8580AGEFTRV WOLFSON [Wolfson Microelectronics plc], WM8580AGEFTRV Datasheet - Page 44
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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 34 ADC Clock Control
S/PDIF INTERFACES
The TX_CLKSEL register selects the clock for the S/PDIF Transmitter from ADCMCLK, PLLACLK,
PLLBCLK, or MCLK. The S/PDIF Receiver only uses PLLACLK, but both PLLACLK and PLLBCLK
are unavailable in user mode when the S/PDIF receiver is active. If the digital routing has been
configured such that the S/PDIF Transmitter is sourcing the S/PDIF Receiver, then PLLACLK is
automatically selected.
The rate at which the S/PDIF Transmitter operates at is determined by the S/PDIF Transmitter Rate
module. It calculates the rate based on the digital routing setup. When sourcing from the S/PDIF
Receiver (default), the SFRM_CLK is used in the rate calculation. When sourcing from the PAIF
Receiver, PAIFRX_LRCLK is used in the rate calculation. When sourcing from the SAIF Receiver,
SAIFRX_LRCLK is used in the rate calculation. When sourcing the ADC, the rate is determined by
either the PAIFTX_LRCLK (if the PAIF Transmitter also sources the ADC) or the ADC_RATE
register.
Figure 28 S/PDIF Clock Selection
REGISTER
ADDRESS
Control 1
CLKSEL
ADC
R29
1Dh
08h
R8
BIT
3:2
7:5
ADCRATE[2:0]
ADC_CLKSEL
LABEL
DEFAULT
010
00
ADC clock source
ADC Rate Control (only used when
the S/PDIF Transmitter is the only
interface sourcing the ADC)
00 = ADCMCLK pin
01 = PLLACLK
10 = PLLBCLK
11 = MCLK pin
000 = 128fs
001 = 192fs
010 = 256fs
011 = 384fs
100 = 512fs
101 = 768fs
110 = 1152fs
DESCRIPTION
PD Rev 4.3 August 2007
Production Data
44
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