PM5345 S/UNI-155
DATA SHEET
PMC-930305
ISSUE 4
SATURN USER NETWORK INTERFACE
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FEATURES
Monolithic Saturn Network Interface that implements the ATM physical layer
for Broadband ISDN according to the ATM Forum User Network Interface
Specification and CCITT Recommendation I.432.
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Operates at 155.52 MHz in conjunction with an external clock and data
recovery device. Provides on-chip parallel to serial and serial to parallel
circuits with pseudo ECL interfaces to process a duplex 155.52 Mbit/s STS-
3c/STM-1 data stream.
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Supports a 19.44 Mbyte/s line interface option for devices requiring a byte-
serial STS-3c/STM-1 interface.
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Provides 4 cell deep FIFO buffers in both transmit and receive paths with a
byte-wide or word-wide system side datapath interface.
Provides a generic 8-bit microprocessor bus interface for configuration,
control, and status monitoring.
Provides a standard 5 signal P1149.1 JTAG test port for boundary scan board
test purposes.
Low power, +5 Volt, CMOS technology.
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160 pin high performance plastic quad flat pack (PQFP) package.
1.1
The receiver section:
Frames to the recovered 155.52 Mbit/s stream or to an 19.44 Mbyte/s stream
and descrambles the received STS-3c (STM-1) stream.
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Interprets the received payload pointer (H1, H2), extracting the STS-3c
synchronous payload envelope (VC4) and path overhead.
Extracts ATM cells from the received STS-3c synchronous payload envelope
using ATM cell delineation and provides optional ATM cell payload
descrambling, header check sequence (HCS) error detection and error
correction, and idle/unassigned cell filtering.
Provides a generic 8 bit wide or 16 bit wide datapath interface to read
extracted cells from an internal four cell FIFO buffer.
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PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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PMC [ PMC-SIERRA, INC ]
