Texas Instruments SRC4382 Evaluation Module (EVM) and USB motherboard SRC4382EVM-PDK SRC4382EVM-PDK データシート
製品コード
SRC4382EVM-PDK
www.ti.com
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
LSB
MSB
LSB
MSB
LRCKA
LRCKB
BC A
K
BC B
K
Audio
Da a
t
LRCKA
LRCKB
BC A
K
BC B
K
Audio
Da a
t
LRCKA
LRCKB
BC A
K
BC B
K
Audio
Da a
t
(a) Left-Justified Data For
a
m t
(b) Right-Justif e
Da
i d
ta Form t
a
(c) I S Data Fo m t
r
a
2
1/f
s
Channel 1 (Left Channel)
Channel 2 (Right Channel)
OVERVIEW OF THE AES3 DIGITAL AUDIO INTERFACE PROTOCOL
SBFS030C – JANUARY 2006 – REVISED SEPTEMBER 2007
Figure 62. Audio Data Formats
This section introduces the basics of digital audio interface protocols pertaining to the transmitter (DIT) and
receiver (DIR) blocks of the SRC4382. Emphasis is placed upon defining the basic terminology and
characteristics associated with the AES3-2003 standard protocol, the principles of which may also be applied to
a number of consumer-interface variations, including S/PDIF, IEC-60958, and EIAJ CP-1201. It is assumed that
the reader is familiar with the AES3 and S/PDIF interface formats. Additional information is available from the
sources listed in the
receiver (DIR) blocks of the SRC4382. Emphasis is placed upon defining the basic terminology and
characteristics associated with the AES3-2003 standard protocol, the principles of which may also be applied to
a number of consumer-interface variations, including S/PDIF, IEC-60958, and EIAJ CP-1201. It is assumed that
the reader is familiar with the AES3 and S/PDIF interface formats. Additional information is available from the
sources listed in the
Reference Documents
section.
The AES3-2003 standard defines a technique for two-channel linear PCM data transmission over 110
Ω
shielded
twisted-pair cable. The AES-3id document extends the AES3 interface to applications employing 75
Ω
coaxial
cable connections. In addition, consumer transmission variants, such as those defined by the S/PDIF, IEC
60958, and CP-1201 standards, utilize the same encoding techniques but with different physical interfaces or
transmission media. Channel status data definitions also vary between professional and consumer interface
implementations.
60958, and CP-1201 standards, utilize the same encoding techniques but with different physical interfaces or
transmission media. Channel status data definitions also vary between professional and consumer interface
implementations.
26
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