CS8427 Cirrus Logic, CS8427 Datasheet - Page 12

• Manufacturer Part Number: CS8427
• Description: 96 kHz Digital Audio Interface Transceiver
• Manufacturer: Cirrus Logic

the current contents of the E buffers into the F buff-
ers.
In applications using AES3 in and AES3 out, the
CS8427 can automatically transceive user data that
conforms to the IEC60958 format. The CS8427
also gives the user access to the bits necessary to
comply with the serial copy management system
(SCMS).
In applications where the user want to read/modi-
fy/write the Channel Status information that re-
quires a micro-controller to actively manage the
Channel Status bits. The part also has a feature that
allows the first five bytes of Channel Status mem-
ory to be configured and transmitted in each chan-
nel status block without change. See
External AES3/SPDIF/IEC60958 Transmitter and
12
*
SDA/CDOUT
AD2/EMPH
SCL/CCLK
Note: When SWCLK mode is enabled, signal input on OMCK is only output through RMCK and
not routed back through the RXD1 multiplexer; RMCK is not bi-directional in this mode.
AD1/CDIN
AD0/CS
ILRCK
ISCLK
SDIN
RXN
RXP
INT
Receiver
Serial
Audio
Input
User Data
AES3
Recovery
Channel
Status
and
Figure 6. CS8427 Internal Block Diagram
“Appendix A:
Status Bits
User Bits
Channel
Control
Port
D
D
Receiver Components” on page 50
Channel Status and User bit management.
3.4
This data sheet assumes that the user is familiar
with the AES3 and S/PDIF data formats. It is advis-
able to have current copies of the AES3 and
IEC60958 specifications on hand for easy refer-
ence.
The latest AES3 standard is available from the Au-
dio Engineering Society or ANSI at
or www.ansi.org. Obtain the latest IEC60958 stan-
dard from ANSI or from the International Electro-
technical Commission at www.iec.ch. The latest
TXD1-0
SPD1-0
Registers
Control
E
E
AES3 and S/PDIF Standards
Documents
Encoder
AES3
Generator
AESBP
Output
Clock
F
F
Serial
Audio
Output
TXOFF
OLRCK
OSCLK
SDOUT
TXP
TXN
OMCK
for a tutorial in
www.aes.org
CS8427
DS477PP3