PM5348-RC中文资料
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PM5348
Two-Channel ATM SATURN User Network Interface
S/UNI-155-DUAL
FEATURES
?Provides two independent SATURN ?-compatible ATM PHY channels in one chip.
?Provides hardware and software backward compatibility with the industry-standard PM5346 S/UNI ?-155-LITE chip.
?Implements the ATM Transmission Convergence (TC) sublayer according to ATM Forum specifications using the SONET/SDH 155.52 Mbit/s STS-3c/STM-1 and SONET 51.84 Mbit/s STS-1 formats.
?NRZ data format supports category-5 Unshielded Twisted Pair (UTP-5) or Shielded Twisted Pair (STP) wiring and optical datalink modules for fiber optic cable.
?Includes on-chip clock recovery and clock synthesis, compliant to Bellcore and ITU-T requirements.
?Operates in timing master or timing slave (loop timed LAN) modes.
?Frames to SONET framing bytes (A1, A2), processes the section and line Bit Interleaved Parity (B1, B2) and the Far-End Block Error (Z2) bytes.
?Interprets the H1, H2, and H3 payload pointer bytes.
?Processes the SONET path overhead BIP-8 (B3), signal label (C2) and path status (G1) bytes.
?Allows for protection switching by
monitoring the APS (K1, K2) bytes, bit error rate thresholds and far-end synchronization status (S1) bits and providing interrupts when error conditions are detected.*
?Inserts and extracts ATM payloads using ATM cell delineation.
?Provides on-chip 4-cell FIFO buffers in both transmit and receive paths.
?Operates with a backward compatible dual 8-bit plus parity or a multi-PHY
compatible 16-bit plus parity* SATURN-Compliant Interface for PHYsical layer devices (SCI-PHY ?).?Cell interface is also compatible with ATM Forum Level 2 UTOPIA direct-mode specifications.?Provides a generic 8-bit
microprocessor bus interface for
configuration, control, and monitoring.?Provides TTL/CMOS compatible inputs and outputs and differential PECL inputs.
?Low power, +5 V CMOS technology.?Packaged in a 28 mm by 28 mm 160-pin Plastic Quad Flat Pack (PQFP).*NOTE:Indicates new features not
provided on S/UNI-155-LITE.
APPLICATIONS
?ATM Switches and Hubs ?ATM Routers
?Multichannel ATM Servers
BLOCK DIAGRAM
Analog Edge
D [7:0]A [8:0]A L
E C S B W R B R D B I N T B
Microprocessor Interface
R S T B RXD2+RXD2-TCA[2:1]TWRENB[2:1]TFCLK TXPRTY[1:0]TDAT[15:0]TSOC[2:1]RCA[2:1]RRDENB[2:1]RFCLK RXPRTY[1:0]RDAT[15:0]RSOC[2:1]TSEN
SCI-PHY Interface T D O T D I T C K T M S T R S T B
R A L M 1R A L M 2O U T 1O U T 2
Receive ATM Cell Processor
Receive ATM 4-Cell FIFO
Receive Framer and Overhead Processor
Clock Generator
ALOS2+ALOS2-
R C L K 2
L F 2+
L F 2-L F O 2
REFCLK+TATP TXD2+TXD2-
REFCLK-Driver
TXD1+TXD1-Serial to Parallel RXD1+RXD1-
Clock and Data Recovery ALOS1+ALOS1-TFP L F 1+L F 1-L F O 1
R C L K 1
R F P
T C L K
Output Port
JTAG Line Side
System Side
Driver
Clock and Data Recovery Serial to Parallel
Parallel to Serial Parallel to Serial
Receive Framer and Overhead Processor
Transmit Framer and Overhead Processor Transmit Framer and Overhead Processor Receive ATM Cell Processor
Receive ATM 4-Cell FIFO Transmit ATM Cell Processor Transmit ATM Cell Processor
Transmit ATM 4-Cell FIFO Transmit ATM 4-Cell FIFO
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Head Office:PMC-Sierra, Inc.
#105 - 8555 Baxter Place Burnaby, B.C. V5A 4V7Canada
Tel: 604.415.6000Fax: 604.415.6200
PM5348 S/UNI-155-DUAL
Two-Channel ATM SATURN User Network Interface
To order documentation, send email to:
document@https://www.wendangku.net/doc/1812547070.html, or contact the head office,Attn: Document Coordinator
All product documentation is available on our web site at:https://www.wendangku.net/doc/1812547070.html, For corporate information,send email to:
info@https://www.wendangku.net/doc/1812547070.html,
PMC-950446 (R4)
? 1998 PMC-Sierra, Inc.October, 1998
SATURN, SCI-PHY and S/UNI are trademarks of PMC-Sierra, Inc.
TYPICAL APPLICATIONS
PM5348
S/UNI ?-155-DUAL Two-Channel ATM SATURN ? User Network Interface
Independent 25 MHz, 8-Bit Buses
ATM Layer ASIC or SAR ASIC Shared
50 MHz, 8-Bit Buses
Shared
50 MHz, 16-Bit Buses
ATM Layer ASIC or SAR ASIC
ATM Layer ASIC
ATM Layer ASIC
Split 8-bit bus mode for backward
compatibility with multiple single-PHY applications.
Applications:
?Multi-SAR Servers
?Single-channel, 8-bit, 25MHz ATM Layer Devices
Shared 8-bit bus mode for 8-bit direct mode multi-PHY applications.
Applications:
?Two-channel, 8-bit, 50MHz ATM Layer Devices
Shared 16-bit bus mode for 16-bit direct mode multi-PHY applications.
Applications:
?Four-channel, 16-bit, 50MHz ATM Layer Devices
PM5348
S/UNI ?-155-DUAL Two-Channel ATM SATURN ? User Network Interface
PM5348
S/UNI ?-155-DUAL Two-Channel ATM SATURN ? User Network Interface
PM5348
S/UNI ?-155-DUAL Two-Channel ATM SATURN ? User Network Interface