DIGITAL FILTERING WITH BETTER THAN
140dB OF STOP BAND ATTENUATION
● FLEXIBLE AUDIO SERIAL PORTS:
Master or Slave Mode Operation
Supports I2S, Left Justified, Right Justified, and
TDM Data Formats
Supports 16, 18, 20, or 24-Bit Audio Data
TDM Mode allows daisy chaining of up to eight
devices
● SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND
OUTPUT DATA
All output data is dithered from the internal
28-Bit data path
● LOW GROUP DELAY OPTION FOR INTERPO-
LATION FILTER
● DIRECT DOWNSAMPLING OPTION FOR
DECIMATION FILTER (SRC4193 ONLY)
● SPI PORT PROVIDES ACCESS TO INTERNAL
CONTROL REGISTERS (SRC4193 ONLY)
● SOFT MUTE FUNCTION
● BYPASS MODE
● PROGRAMMABLE DIGITAL OUTPUT
ATTENUATION (SRC4193 ONLY)
256 steps: 0dB to –127.5dB, 0.5dB/step
(1) U.S. Patent No. 7,262,716.
(2) Refer to the Applications Information section of this data sheet for details.
S
R
C
4
1
9
3
SBFS022B – JUNE 2003 – REVISED SEPTEMBER 2007
SRC4193
(1)
● POWER DOWN MODE
● OPERATES FROM A SINGLE +3.3 VOLT
POWER SUPPLY
● SMALL 28-LEAD SSOP PACKAGE
● PIN COMPATIBLE WITH THE AD1896
(SRC4192 ONLY)
(2)
APPLICATIONS
● DIGITAL MIXING CONSOLES
● DIGITAL AUDIO WORKSTATIONS
● AUDIO DISTRIBUTION SYSTEMS
● BROADCAST STUDIO EQUIPMENT
● HIGH-END A/V RECEIVERS
● GENERAL DIGITAL AUDIO PROCESSING
DESCRIPTION
The SRC4192 and SRC4193 are asynchronous sample rate
converters designed for professional and broadcast audio
applications. The SRC4192 and SRC4193 combine a wide
input-to-output sampling ratio with outstanding dynamic range
and ultra low distortion. Input and output serial ports support
standard audio formats, as well as a Time Division Multiplexed (TDM) mode. Flexible audio interfaces allow the
SRC4192 and SRC4193 to connect to a wide range of audio
data converters, digital audio receivers and transmitters, and
digital signal processors.
The SRC4192 is a standalone pin programmed device, with
control pins for mode, data format, mute, bypass, and low
group delay functions. The SRC4193 is a software-controlled
device featuring a serial peripheral interface (SPI) port, which
is utilized to program all functions via internal control registers.
The SRC4192 and SRC4193 may be operated from a single
+3.3V power supply. A separate digital I/O supply (V
operates over the +1.65V to +3.6V supply range, allowing
greater flexibility when interfacing to current and future generation signal processors and logic devices. Both the
SRC4192 and SRC4193 are available in a 28-lead SSOP
package.
IO
)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Supply Voltage, VDD.......................................................... –0.3V to +4.0V
Supply Voltage, V
Digital Input Voltage .......................................................... –0.3V to +4.0V
Operating Temperature Range ........................................–45°C to +85°C
Storage Temperature Range ......................................... –65°C to +150°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is
not implied.
........................................................... –0.3V to +4.0V
IO
(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PRODUCTPACKAGE-LEADDESIGNATOR
PACKAGETEMPERATUREPACKAGEORDERINGTRANSPORT
SRC4192SSOP-28DB–45°C to +85°CSRC4192ISRC4192IDBRails, 50
(1)
SPECIFIED
RANGEMARKINGNUMBERMEDIA, QUANTITY
" """"SRC4192IDBRTape and Reel, 2000
SRC4193SSOP-28DB–45°C to +85°CSRC4193ISRC4193IDBRails, 50
" """"SRC4193IDBRTape and Reel, 2000
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this data sheet, or see the TI web site at www.ti.com.
1LGRPLow Group Delay Control Input (Active High)
2RCKIReference Clock Input
3N.C.No Connection
4SDINAudio Serial Data Input
5BCKIInput Port Bit Clock I/O
6LRCKIInput Port Left/Right Word Clock I/O
7V
8DGNDDigital Ground
9BYPASASRC Bypass Control Input (Active High)
10IFMT0Input Port Data Format Control Input
11IFMT1Input Port Data Format Control Input
12IFMT2Input Port Data Format Control Input
13RSTReset Input (Active Low)
14MUTEOutput Mute Control Input (Active High)
15RDYASRC Ready Status Output (Active Low)
16OWL1Output Port Data Word Length Control Input
17OWL0Output Port Data Word Length Control Input
18OFMT1Output Port Data Format Control Input
19OFMT0Output Port Data Format Control Input
20TDMITDM Data Input (Connect to DGND when not in use)
21DGNDDigital Ground
22V
23SDOUTAudio Serial Data Output
24LRCKOOutput Port Left/Right Word Clock I/O
25BCKOOutput Port Bit Clock I/O
26MODE0Serial Port Mode Control Input
27MODE1Serial Port Mode Control Input
28MODE2Serial Port Mode Control Input
Digital I/O Supply, +1.65V to V
IO
Digital Core Supply, +3.3V
DD
DD
2
www.ti.com
SRC4192, SRC4193
SBFS022B
PIN CONFIGURATION (SRC4193)
Top View
RCKI
1
NC
2
NC
3
SDIN
4
BCKI
5
LRCKI
6
VIO
DGND
BYPAS
NC
NC
NC
RST
MUTE
7
8
9
10
11
12
13
14
SRC4193
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CDATA
CCLK
CS
BCKO
LRCKO
SDOUT
V
DD
DGND
TDMI
NC
NC
NC
RATIO
RDY
PIN DESCRIPTIONS (SRC4193)
PIN#NAMEDESCRIPTION
1RCKIReference Clock Input
2N.C.No Connection
3N.C.No Connection
4SDINAudio Serial Data Input
5BCKIInput Port Bit Clock I/O
6LRCKIInput Port Left/Right Word Clock I/O
7V
8DGNDDigital Ground
9BYPASASRC Bypass Control Input (Active High)
10N.C.No Connection
11N.C.No Connection
12N.C.No Connection
13RSTReset Input (Active Low)
14MUTEOutput Mute Control Input (Active High)
15RDYASRC Ready Status Output (Active Low)
16RATIOInput-to-Output Ratio Flag Output
17N.C.No Connection
18N.C.No Connection
19N.C.No Connection
20TDMITDM Data Input (Connect to DGND when not in use)
21DGNDDigital Ground
22V
23SDOUTAudio Serial Data Output
24LRCKOOutput Port Left/Right Word Clock I/O
25BCKOOutput Port Bit Clock I/O
26CSSPI Port Chip Select Input (Active Low)
27CCLKSPI Port Data Clock Input
28CDATASPI Port Serial Data Input
Digital I/O Supply, +1.65V to V
IO
Low output denotes Output rate lower than Input rate.
High output denotes Output rate higher than Input rate.
12kHz; 192kHz–137dB
Interchannel Gain Mismatch0dB
Interchannel Phase Deviation0Degrees
Digital AttenuationSRC4193 Only
Minimum0dB
Maximum–127.5dB
Step Size0.5dB
Mute Attenuation24-Bit Word Length, A-weighted–144dB
DIGITAL INTERPOLATION FILTER
CHARACTERISTICS
Passband0.4535 x f
Passband Ripple±0.007dB
Transition Band0.4535 x f
Stop Band0.5465 x f
Stop Band Attenuation–144dB
Normal Group Delay (LGRP = 0)Decimation Filter On (DFLT = 0)102.53125/f
Normal Group Delay (LGRP = 0)Decimation Filter Off (DFLT = 1)102/f
Low Group Delay (LGRP = 1)Decimation Filter On (DFLT = 0)70.53125/f
Low Group Delay (LGRP = 1)Decimation Filter Off (DFLT = 1)70/f
DIGITAL DECIMATION FILTER
CHARACTERISTICS
Passband0.4535 x f
Passband Ripple±0.008dB
Transition Band0.4535 x f
Stop Band0.5465 x f
Stop Band Attenuation–143dB
Group Delay
Decimation FilterDFLT = 0 for SRC419336.46875/f
Direct Down-SamplingSRC4193 Only, DFLT = 10Seconds