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PDF CS8406 Data sheet ( Hoja de datos )
| Número de pieza | CS8406 | |
| Descripción | 192 KHZ DIGITAL AUDIO INTERFACE TRANSMITTER | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CS8406
192 kHz Digital Audio Interface Transmitter
Features
Complete EIAJ CP1201, IEC-60958, AES3,
S/PDIF-compatible Transmitter
+3.3 V or 5.0 V Digital Supply (VD)
+3.3 V or 5.0 V Digital Interface (VL)
On-Chip Channel Status and User Bit Buffer
Memories Allow Block-Sized Updates
Flexible 3-Wire Serial Digital Audio Input Port
Up to 192-kHz Frame Rate
Microcontroller Write Access to Channel Status
and User Bit Data
On-Chip Differential Line Driver
Generates CRC Codes and Parity Bits
Stand-Alone Mode Allows Use without a
Microcontroller
General Description
The CS8406 is a monolithic CMOS device which en-
codes and transmits audio data according to the AES3,
IEC60958, S/PDIF, o r EIAJ CP1201 standards. The
CS8406 accepts aud io and digital data, which is then
multiplexed, encoded, and driven onto a cable.
The audio data is input through a configurable, 3-wire
input port. The channel status and user bit data are in-
put through an SPI™ or I²C® microcontroller port, and
may be assembled in block-sized buffers. For systems
with no microcontroller, a Stand-Alone Mode allows di-
rect access to channel status and user bit data pins.
The CS8406 is available in a 28-pin TSSOP and SOIC
package for both Co mmercial (-10º to +70ºC) and
Automotive grade (-40º to +85ºC). The CDB8416
Demonstration board is also available for device
evaluation and implementation suggestions. Please
refer to “Ordering Information” on page 34 for complete
details.
Target applications include A/V Receivers, CD-R, DVD
receivers, digital mixin g consoles, effects processors,
set-top boxes, and computer and automotive audio
systems.
VD VL GND
RXP
ILRCK
ISCLK
SDIN
Serial
Audio
Input
Misc.
Control
H/S RST
C or U Data Buffer
Control Port &
Registers
AES3
S/PDIF
Encoder
Driver
TXP
TXN
TCBL
Output Clock
Generator
U SDA/ SCL/ AD1/ AD0/ AD2 INT
CDOUT CCLK CDIN CS
OMCK
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2012
(All Rights Reserved)
AUG '12
DS580F6
1 page  
DIGITAL INPUT CHARACTERISTICS
Parameters
Input Leakage Current
Input Hysteresis (all inputs except OMCK)
CS8406
Symbol Min Typ Max Units
Iin - - ±0.5 A
- 0.25 -
V
DIGITAL INTERFACE SPECIFICATIONS
(GND = 0 V; all voltages with respect to 0 V.)
Parameters
High-Level Output Voltage (IOH = -3.2 mA), except TXP/TXN
Low-Level Output Voltage (IOH = 3.2 mA), except TXP/TXN
High-Level Output Voltage, TXP, TXN
(21 mA at VL = 5.0 V)
(15 mA at VL = 3.3 V)
Low-Level Output Voltage, TXP, TXN
(21 mA at VL = 5.0 V)
(16 mA at VL = 3.3 V)
High-Level Input Voltage
VD = 5.0 V
VD = 3.3 V
Low-Level Input Voltage
VD = 5.0 V
VD = 3.3 V
Symbol
VOH
VOL
VIH
VIL
Min
VL - 1.0
-
VL - 0.7
VL - 0.7
-
-
2.75
2.0
-0.3
-0.3
Max
-
0.4
VL
VL
0.7
0.7
VL + 0.3
VL + 0.3
0.8
0.8
Units
V
V
V
V
V
V
V
V
V
V
TRANSMITTER CHARACTERISTICS
TXP Output Resistance
TXN Output Resistance
Parameters
VL = 5.0 V
VL = 3.3 V
VL = 5.0 V
VL = 3.3 V
Symbol
RTXP
RTXN
Typ
26.5
33.5
26.5
33.5
Units
SWITCHING CHARACTERISTICS
(Inputs: Logic 0 = 0 V, Logic 1 = VL; CL = 20 pF)
Parameter
RST pin Low Pulse Width
OMCK Frequency for OMCK = 512*Fs
OMCK Low and High Width for OMCK = 512*Fs
OMCK Frequency for OMCK = 384*Fs
OMCK Low and High Width for OMCK = 384*Fs
OMCK Frequency for OMCK = 256*Fs
OMCK Low and High Width for OMCK = 256*Fs
OMCK Frequency for OMCK = 128*Fs
OMCK Low and High Width for OMCK = 128*Fs
Frame Rate
AES3 Transmitter Output Jitter
Symbol Min Typ Max Units
200 - - s
4.1 - 98.4 MHz
4.1 - - ns
3.1 - 73.8 MHz
6.1 - - ns
2.0 - 49.2 MHz
8.1 - - ns
1.0 - 24.6 MHz
18.3 - - ns
8 - 192 kHz
- 200 - ps RMS
DS580F6
5
5 Page 
CS8406
3. GENERAL DESCRIPTION
The CS8406 is a monolithic CMOS device which encodes a nd transmits audio data according to the AES3,
IEC60958, S/PDIF, and EIAJ CP1201 interface standards. The CS8406 accepts audio, channel status and user da-
ta, which is then multiplexed, encoded, and driven onto a cable.
The audio data is input through a configurable, 3-wire input port. The channel status bits and user bit data are input
through an SPI or I²C Mode microcontroller port and may be assembled in separate block sized buffers.
For systems with no microcontroller, a Stand-Alone Mode allows direct access to channel status and user data input
pins.
Target applications include CD-R, DAT, DVD, MD and VTR equipment, mixing consoles, digital audio transmission
equipment, high quality A/D converters, effects processors, set-top TV boxes, and computer audio systems.
Figure 5 shows the supply and external connections to the CS8406 when configured for operation with a microcon-
troller. Figure 6 shows the supply and external connections to the CS8406 when configured for operation without a
microcontroller.
3.1 AES3 and S/PDIF Standards Documents
This data sheet assumes that the user is familiar with the AES3 and S/PDIF data formats. It is advisable to
have current copies of the AES3 and IEC60958 specifications on hand for easy reference.
The latest AES3 standard is available from the Audio Engi neering Society or ANSI at www.aes.org or
www.ansi.org. Obtain the latest IEC60958 standard from ANSI or from the International Electrotechnical
Commission at www.iec.ch. The latest EIAJ CP-1201 standard is available from the Japanese Electronics
Bureau.
Application Note 22: Overview of Digital Audio Interface Data Structures contains a useful tutorial on digital
audio specifications, but it should not be considered a substitute for the standards.
The paper An Understanding and Implementation of the SCMS Serial Copy Management System for Digital
Audio Transmission, by Clifton Sanchez, is an excellent tutorial on SCMS. It is available from the AES as
reprint 3518.
DS580F6
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CS8406.PDF ] | |
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