*Request the AHA3411 Product Specification for complete details.
comtech aha corporation
comtech aha corporation
PRODUCT BRIEF*
AHA3411 StarLite
33 MBYTES/SEC SIMULTANEOUS
COMPRESSOR/DECOMPRESSOR IC
AHA3411 is a high speed lossless compression
coprocessor IC for the hardcopy systems on many
standard platforms, including the PCI Bus. The
device is targeted for over 30 ppm printers or 50
ppm copiers at 1200 dpi.
Simultaneous compression and decompression,
flexible interfaces and advanced banding support
make this a unique solution for high performance
Raster Image Processing (RIP) controller designs.
Advanced banding support handles blank,
uncompressed and compressed bands during
decompression mode. Scan line and record length
counters accommodate various print resolutions
and band buffer sizes.
Software simulation and an analysis of the
algorithm for printer and copier images of various
complexity are available for evaluation.
FEATURES
PERFORMANCE:
33 MBytes/sec compression/decompression rates
132 MBytes/sec burst data rate over a 32-bit
data bus
33 MBytes/sec synchronous optional 8-bit video
in and video out ports
Simultaneous compression and decompression at
full bandwidth
Average 15 to 1 compression ratio for 1200 dpi
bitmap image data
Advanced banding support
FLEXIBILITY:
Big Endian or Little Endian; 32 or 16-bit bus
width and data bit/byte reordering for duplex
printing support
Programmable Record Length, Record Count and
Scan Length Registers may be prearmed
Scan line length up to 2K bytes
Interfaces directly with various Motorola 68xxx
and Cold FIRE and Intel i960 processors
Pass-through mode passes raw data through
compression and decompression engines
SYSTEM INTERFACE:
Single chip compression/decompression
solutionno external SRAM required
Four internal 16 32-bit FIFOs
Maskable interrupts
Tristatable outputs to facilitate board level testing
OTHERS:
Low power modes
Optional counter checks errors in decompression
Software emulation program available
128 pin quad flat package
APPLICATIONS
Digital copiers
Printer controllers
Multifunction printers and copiers
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PA
[
3
]
PA
[
2
]
PA
[
1
]
PA
[
0
]
T
EST
0
VO
A
C
K
N
VSS
VD
D
CO
E
O
R
N
VO
D
[
7
]
VO
D
[
6
]
VO
D
[
5
]
VO
D
[
4
]
VO
D
[
3
]
VSS
VD
D
VO
D
[
2
]
VO
D
[
1
]
VO
D
[
0
]
VO
E
O
R
N
VO
R
E
Q
N
D[31]
VSS
VSS
VD
D
VD
D
D[30]
D[29]
D[28]
D[27]
D[26]
D[25]
VDD
VSS
D[24]
D[23]
D[22]
D[21]
D[20]
D[19]
D[18]
D[17]
D[16]
D[15]
VDD
VSS
VDD
VDD
VSS
CLOCK
VDD
VSS
VSS
TEST1
D[14]
D[13]
D[12]
VDD
VSS
D[11]
D[10]
D[9]
D[8]
D[7]
VID
[
4
]
VID
[
3
]
VID
[
2
]
VID
[
1
]
VID
[
0
]
IN
T
R
N
VSS
VD
D
DR
IV
E
N
SD
DO
A
C
K
N
CO
A
C
K
N
DIA
C
K
N
CIA
C
K
N
VSS
VD
D
DO
R
E
Q
N
CO
R
E
Q
N
DIR
E
Q
N
CIR
E
Q
N
VI
R
E
QN
D[0
]
VSS
VSS
VD
D
VD
D
D[1
]
D[2
]
D[3
]
D[4
]
D[5
]
D[6
]
VDD
PA[5]
VSS
PA[4]
COEOTN
VOEOTN
PROCMODE[1]
PROCMODE[0]
CSN
VDD
VSS
DIR
RSTN
PD[7]
PD[6]
PD[5]
VDD
VSS
PD[4]
PD[3]
PD[2]
PD[1]
PD[0]
VDD
VSS
RDYN
VIACKN
VID[7]
VID[6]
VID[5]
VDD
VSS
AHA3411A-033 PQC
YYWWD - COUNTRY OF ORIGIN
LLLLL
NOTE: YYWWD = DATE CODE; LLLLL = LOT NUMBER
comtech aha corporation
Figure 1:
AHA3411 Block Diagram
FUNCTIONAL DESCRIPTION
The coprocessor device has three external high
speed synchronous data ports each capable of
transferring once every 33 MHz clock. These are a
32-bit bidirectional data port, an 8-bit Video Input
Data (VID) port and a Video Output Data (VOD)
port. The data port is capable of transferring up to
132 MBytes/sec. The VID and VOD are capable of
up to 33 MBytes/sec each.
The device accepts uncompressed data through
the data port or optionally through the 8-bit VID
port into its Compression In FIFO (CI FIFO).
Compressed data is available through the data port
via the Compressed Output FIFO (CO FIFO). The
sustained data rate through the compression engine
is 33 MBytes/sec.
Decompression data is accepted through the data
port, buffered in the Decompression Input FIFO (DI
FIFO), and decompressed. The output data is made
available on the data port via the Decompression
Output FIFO (DO FIFO) or optionally on the 8-bit
Video Output port. The decompression engine runs
on the 33 MHz clock and is capable of processing an
uncompressed byte every clock, i.e. 33 MBytes/sec.
The four FIFOs are organized as 1632 each.
For data transfers through the three ports, the
"effective" FIFO widths differ according to their
data bus widths.
Data transfer for compression or decompression
is synchronous over the three data ports functioning
as DMA masters. To initiate a transfer into or out of
the Video ports, the device asserts VxREQN, the
external device responds with VxACKN and begins
to transfer data over the VID or VOD busses on each
succeeding rising edge of the clock until VxREQN
is deasserted. The data port relies on the FIFO
Threshold settings to determine the transfer.
SYSTEM APPLICATION
The device is intended for memory intensive
applications, such as digital copiers or printers.
These applications require the simultaneous
compression and decompression capability of the
device. Copiers use this feature to feed the
compressed bit maps through the decompressor to
the printer engine while another process uses the
compressor to input and compress scanned images.
Movement for both processes is typically controlled
by a DMA controller that is programmed by the local
microprocessor.
(From Scanner)
VIREQN
VID[7:0]
VIACKN
D[31:0]
DRIVEN
TE
ST
CL
K
RSTN
PR
O
C
M
O
DE[1:0]
PD[7:0]
P
A[5:0]
CSN
DIR
RD
Y
N
INT
R
N
VOACKN
VOD[7:0]
VOREQN
VOEORN
VOEOTN
(To Printer)
COEORN
DOREQN
COREQN
DI
REQN
CI
REQN
SD
DO
A
CKN
CO
A
CKN
DI
A
CKN
CI
A
CKN
VID
PORT
DATA
PORT
CI
FIFO
16x32
DI
FIFO
16x32
CLOCK
DATA PORT CONTROL
COMPRESSOR
DECOMPRESSOR
MICROPROCESSOR INTERFACE
CO
FIFO
16x32
DO
FIFO
16x32
VOD
PORT
AHA3411
StarLite
8
8
8
8
8
8
32
32
32
6
8
COEOTN
comtech aha corporation
StarLite IMAGE COMPRESSION RESULTS - 1200 x 1200 DPI
Uncompressed file size = 16 MBytes; Image dimensions = 10200 13200 pels
FONTS - Simple Text
Output File Size
= 783,848
Compression Ratio = 21.5
MATH - Simple Text and Lineart
Output File Size
= 79,245
Compression Ratio = 212.4
MP - Text and Simple Graphics
Output File Size
= 86,525
Compression Ratio = 194.5
BENCH2 - Text and Graphics with Pictorials
Output File Size
= 424,995
Compression Ratio = 39.6
BALLS - Complex Graphics with Pictorials
Output File Size
= 3,665,167
Compression Ratio = 4.6
comtech aha corporation
PB3411_0600
2005 Comtech AHA Corp.
comtech aha corporation
1126 Alturas Drive
fax: 208.892.5601
tel: 208.892.5600
A subsidiary of Comtech Telecommunications Corporation
Moscow ID 83843-8331
e-mail: sales@aha.com
www.aha.com
A subsidiary of Comtech Telecommunications Corporation
1126 Alturas Drive
fax: 208.892.5601
tel: 208.892.5600
Moscow ID 83843-8331
e-mail: sales@aha.com
www.aha.com
COMPRESSOR/DECOMPRESSOR FOR MID-
RANGE MULTIFUNCTION COPIER/PRINTER
APPLICATIONS - AN EXAMPLE
ABOUT AHA
Comtech AHA Corporation (AHA) develops
and markets superior integrated circuits, boards,
and intellectual property core technology for
communications systems architects worldwide.
AHA has been setting the standard in Forward Error
Correction and Lossless Data Compression
technology for many years and provides flexible,
cost-effective solutions for today's growing
bandwidth and reliability challenges. Comtech
AHA Corporation is a wholly owned subsidiary of
Comtech Telecommuncations Corp. (NASDAQ:
CMTL). For more information, visit www.aha.com.
ORDERING INFORMATION
FRAME BUFFER
MEMORY
AHA3411
StarLite
COACKN
PA[4:0]
CSN
DIR
RDYN
INTRN
COREQN
DATA PORT
VID PORT
VOD PORT
VIACKN
VIREQN
VOREQN
VOACKN
VOEORN
CPU
INTERFACE
VID SCANNER
PORT
VOD PRINTER
PORT
32
bit
8-bits
8-bits
(33 MBytes/sec)
(33 MBytes/sec)
2
2
VOEOTN
DIREQN
DIACKN
PART NUMBER
DESCRIPTION
AHA3411A-033 PQC
33 MBytes/sec Simultaneous
Compressor/Decompressor IC
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