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DS33Z44 Datasheet

  • DS33Z44

  • Quad Ethernet Mapper

  • 181頁

  • MAXIM   MAXIM

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DS33Z44
Quad Ethernet Mapper
www.maxim-ic.com
GENERAL DESCRIPTION
The DS33Z44 extends four 10/100 Ethernet LAN
segments by encapsulating MAC frames in HDLC or
X.86 (LAPS) for transmission over four PDH/TDM
data streams. The serial links support bidirectional
synchronous interconnect up to 52Mbps over xDSL,
T1/E1/J1, T3/E3, V.35/Optical, OC-1/EC-1, or
SONET/SDH Tributary.
The device performs store-and-forward of packets
with full wire-speed transport capability. The built-in
Committed Information Rate (CIR) controllers
provide fractional bandwidth allocation up to the line
rate in increments of 512kbps. The DS33Z44 can
operate with an inexpensive external processor,
EEPROM or in a stand-alone hardware mode.
FEATURES
摟
Four 10/100 IEEE 802.3 Ethernet MACs (MII and
RMII) Half/Full Duplex with Automatic Flow
Control
Four 52Mbps Synchronous TDM Serial Ports
with independent transmit and receive timing.
HDLC/LAPS Encapsulation with Programmable
FCS and Interframe Fill
Committed Information Rate Controllers Provide
Fractional Allocations in 512kbps Increments
Programmable BERT for Serial (TDM) Interfaces
External 16MB, 100MHz SDRAM Buffering
Parallel Microprocessor Interface
SPI Interface and Hardware Mode for Operation
Without a Host Processor
1.8V Operation with 3.3V Tolerant I/O
IEEE 1149.1 JTAG Support
摟
摟
摟
摟
摟
摟
摟
摟
摟
APPLICATIONS
Transparent LAN Service
LAN Extension
Ethernet Delivery Over T1/E1/J1, T3/E3,
OC-1/EC-1, G.SHDSL, or HDSL2/4
FUNCTIONAL DIAGRAM
DS33Z44
TRANSCEIVERS/
SERIAL DRIVERS
Features Continued on Page
10.
4 SERIAL
PORTS
ORDERING INFORMATION
PART
DS33Z44
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
256 CSBGA
BERT
CONFIG.
LOADER
HDLC/X.86
MAPPER
PROM
OR
mC
SDRAM
Go to
www.maxim-ic.com/telecom
for a complete list of
Telecommunications data sheets, evaluation kits, application
notes, and software downloads.
4 10/100
MACs
4 MII/RMII
4 10/100
ETHERNET
PHYs
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
www.maxim-ic.com/errata.
1 of 181
REV: 120304

DS33Z44 產(chǎn)品屬性

  • Maxim Integrated Products

  • Tube

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