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PM5347 S/UNI-PLUS
DATA SHEET
PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
xiv
PM5347 S/UNI-PLUS
DATA SHEET
PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
1
FEATURES
Monolithic Saturn User Network Interface that implements the ATM physical
•
layer for Broadband ISDN according to ANSI, ITU, and ATM Forum
specifications.
Processes duplex 155.52 Mbit/s STS-3c/STM-1 or 51.84 Mbit/s STS-1 data
•
streams with on-chip clock and data recovery and clock synthesis.
Provides Saturn Compliant Inte rface - PHYsical layer (SCI-PHY™) FIFO
•
buffers in both transmit and receive paths with parity support.
Provides a generic 8-bit microprocessor bus interface for configuration,
•
control, and status monitoring.
Provides a standard 5 signal IEEE 1149.1 JTAG test port for boundary scan
•
board test purposes.
Low power, +5 Volt, CMOS technology.
•
208 pin high performance plastic quad flat pack (PQFP) 28 mm x 28 mm
•
package.
Industrial temperature range operation (-40°C to +85°C).
•
The receiver section:
Provides a serial interface at 155.52 or 51.84 Mbit/s.
•
Recovers the clock and data.
•
Frames to and descrambles the recovered stream.
•
Filters and captures the automatic protection switch channel (K1, K2) bytes in
•
readable registers and detects APS byte failure.
Captures the synchronization status (S1) byte in a readable register.
•
Interprets the received payload pointer (H1, H2) and extracts the STS-3c/1
•
(STM-1) synchronous payload envelope and path overhead.
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PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
Extracts ATM cells from the received STS-3c/1 (STM-1) synchronous payload
•
envelope using ATM cell delineation and provides optional ATM cell payload
descrambling, header check sequence (HCS) error detection and correction,
and idle/unassigned cell filtering.
Provides a generic 16 bit or 8 bit wide datapath interface to read extracted
•
cells from an internal four cell FIFO buffer.
Extracts all transport overhead bytes and serializes them at 5.184 Mbit/s for
•
optional external processing.
Extracts the section user channel (F1) and the orderwire channels (E1, E2)
•
and serializes them into three independent 64 kbit/s streams for optional
external processing.
Extracts the data communication channels (D1-D3, D4-D12) and serializes
•
them at 192 kbit/s (D1-D3) and 576 kbit/s (D4-D12) for optional external
processing.
Extracts all path overhead bytes and serializes them at 576 kbit/s for optional
•
external processing.
Extracts the 16 or 64 byte section trace (J0) sequence and the 16 or 64 byte
•
path trace (J1) sequence into internal register banks.
Detects loss of signal (LOS), out of frame (OOF), loss of frame (LOF), line
•
alarm indication signal (LAIS), line remote defect indication (LRDI), loss of
pointer (LOP), path alarm indication signal (PAIS), path remote defect
indication signal (PRDI) and loss of cell delineation (LCD).
Counts received section BIP-8 (B1) errors, received line BIP-24/8 (B2) errors,
•
line far end block errors (M0 or M1), received path BIP-8 (B3) errors and path
far end block errors (G1) for performance monitoring purposes.
Counts received cells written into the receive FIFO, received HCS errored
•
cells that are discarded, and received HCS errored cells that are corrected
and passed through the receive FIFO.
Extracts and serializes the GFC field from all received cells (including
•
idle/unassigned cells) for external processing.
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PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
The transmitter section:
Provides an internal four cell FIFO into which cells are written using a generic
•
16-bit or 8-bit wide datapath interface.
Inserts the generic flow control (GFC) bits via a simple serial interface and
•
provides a transmit XOFF function to allow fo r local flow control.
Counts transmit cells read from the transmit FIFO.
•
Provides idle/unassigned cell insertion, HCS generation/insertion, and ATM
•
cell payload scrambling.
Inserts ATM cells into the transmitted STS-3c/1 (STM-1) synchronous
•
payload envelope.
Inserts a register programmable path signal label (C2).
•
Generates the transmit payload pointer (H1, H2) and inserts the path
•
overhead.
Optionally inserts the 16 or 64 byte section trace (J0) sequence and the 16 or
•
64 byte path trace (J1) sequence from internal register banks.
Optionally inserts externally generated path overhead bytes received via a
•
576 kbit/s serial interface.
Optionally inserts externally generated data communication channels (D1-D3,
•
D4-D12) via a 192 kbit/s (D1-D3) serial stream and a 576 kbit/s (D4-D12)
serial stream.
Optionally inserts externally generated section user channel (F1) and
•
externally generated orderwire channels (E1, E2) via three 64 kbit/s serial
interfaces.
Optionally inserts externally generated transport overhead bytes received via
•
a 5.184 Mbit/s serial interface.
Scrambles the transmitted STS-3c/1 (STM-1) stream and inserts the framing
•
bytes (A1, A2).
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PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
Synthesizes the 155.52 MHz or 51.84 MHz transmit clock from a 19.44 MHz
•
or 6.48 MHz reference.
Provides a serial interface at 155.52 Mbit/s or 51.84 Mbit/s.
•
Optionally inserts path alarm indication signal (PAIS), path remote defect
•
indication (PRDI), line alarm indication signal (LAIS) and line remote defect
indication (LRDI) indication.
Optionally inserts register programmable APS (K1, K2) and synchronization
•
status (S1) bytes.
Inserts path BIP-8 codes (B3), path far end block error (G1) indications, line
•
BIP-24/8 codes (B2), line fa r end block error (M0 or M1) indications, section
BIP-8 codes (B1) to allow performance monitoring at the far end.
Allows forced insertion of all zero s data (after scrambling), the corruption of
•
the framing bytes or the corruption of the section, line, or path BIP-8 codes for
diagnostic purposes.
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PM5347 S/UNI-PLUS
DATA SHEET
PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
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APPLICATIONS
SONET/SDH Based ATM Switching Systems
•
SONET/SDH Based ATM Terminals
•
B-ISDN User Network Interfaces
•
B-ISDN Test Equipment
•
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DATA SHEET
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REFERENCES
1. ITU Recommendation G.709 DRAFT - "Synchronous Multiplexing Structure",
COM XVIII-R 105-E.
2. ITU Recommendation I.432 DRAFT - "B-ISDN User-Network
Interface-Physical Interface Specification", COM XVIII-R 80-E.
3. Bell Communications Research - SONET Transport Systems: Common
Generic Criteria, GR-253-CORE, Issue 1, December 1994.
5. ATM Forum - BISDN Inter Carr ier Interface Specification, V1.0, August, 1993.
6. IEEE 1149.1 - Standard Test Access Port and Boundary Scan Architecture,
May 21, 1990.
7. T1.105, American National Standard for Telecommunications - Digital
Hierarchy - Optical Interface Rates and Formats Specifications (SONET),
1991
8. T1X1.3/93-006R3, Draft American National Standard for Telecommunications,
Synchronous Optical Network (SONET): Jitter at Network Interfaces
9. T1E1.2/94-002R1, Draft American National Standard for Telecommunications,
Broadband ISDN and DS1/ATM User Network Interfaces: Physical Layer
Specification
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APPLICATION EXAMPLES
The S/UNI-PLUS is used to implement the core physical layer functions of an
ATM User Network Interface or BISDN Inter Carrier Interface. The S/UNI-PLUS
may find application at either end of switch-to-switch links or switch-to-terminal
links, both in public network (WAN) and private network (LAN) situations. In a
typical STS-3c (STM-1) application, the S/UNI-PLUS perfo rms clock and data
recovery for the receive direction and clock synthesis for the transmit direction of
the line interface. On the drop side, the S/UNI-PLUS interfaces directly with ATM
layer processors and switching or adaptation functions using a SCI-PHY™
synchronous FIFO style interface. The initial configuration and ongoing control
and monitoring of the S/UNI-PLUS are normally provided via a generic
microprocessor interface. This application is shown in Figure 1.
Figure 1- Typical STS-3c ATM Switch Port Interface
TRANSMIT
ALARM INSERT
SIGNALS
PM5347 S/UNI-PLUS
SONET/SDH
TCA
TXPRTY[1:0]
TDAT[15:0]
TSOC
TWRENB
TFCLK
RCA
RXPRTY[1:0]
RDAT[15:0]
RSOC
RRDENB
RFCLK
TRANSMIT
ATM
PROCESS
RECEIVE
ATM
PROCESS
SWITCHING
NETWORK
E/O
O/E
Ref.
Clock
19.44 MHz
TRCLK+/-
TXD+/-
RRCLK+/-
RXD+/-
ALOS+/-
TRANSMIT
OVERHEAD
INSERT
USER NETWORK INTERFACE
RECEIVE
OVERHEAD
EXTRACT
RECEIVE
ALARM DETECT
SIGNALS
MICRO BUS
FOR CONFIG, STATUS
AND CONTROL
The clock recovery function of the S/UNI-PLUS may by bypassed. This is useful
in applications where clock recovery is not required such as when optical
receivers are utilized that have integral clock recovery. Similarly, the clock
synthesis function of the S/UNI-PLUS may be bypassed. This is useful in
applications where clock synthesis is not required, for example where a 155 MHz
transmit clock source is available. An example of an application where clock
recovery and clock synthesis are bypassed is shown in Figure 2.
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Figure 2- Application With Clock Recovery & Clock Synthesis
Bypassed
E/O
O/E
With
Clock
Recovery
Ref.
Clock
155.52 MHz
TRCLK+/-
TXD+/-
RRCLK+/-
RXD+/-
ALOS+/-
TRANSMIT
OVERHEAD
INSERT
TRANSMIT
ALARM INSERT
SIGNALS
PM5347 S/UNI-PLUS
SONET/SDH
USER NETWORK INTERFACE
RECEIVE
OVERHEAD
EXTRACT
RECEIVE
ALARM DETECT
SIGNALS
TCA
TXPRTY[1:0]
TDAT[15:0]
TSOC
TWRENB
TFCLK
RCA
RXPRTY[1:0]
RDAT[15:0]
RSOC
RRDENB
RFCLK
MICRO BUS
FOR CONFIG, STATUS
AND CONTROL
TRANSMIT
ATM
PROCESS
RECEIVE
ATM
PROCESS
SWITCHING
NETWORK
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PM5347 S/UNI-PLUS
K
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PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
5
TRCLK+/-
TXD+/TXC+/-
RXDO+/-
RXD+/-
ALOS+/-
RRCLK+/-
BLOCK DIAG RAM
Normal Operating Mode
TLAIS
TSDCLK,TOWCL
TLDCLK
TATP
TBYP
Clock
Synthesizer
PISO
Clock
Recovery
SIPO
Section O/H
Processor
Section O/H
Processor
TLRDI
TSD,TSOW,TSUC
Tx
Section
Trace
Buffer
Rx
TLD,TLOW
TTOH
Transport
Insert
Line O/H
Processor
Rx
Line O/H
Processor
Transport
Extract
TTOHCLK
TTOHFP
O/H
Tx
O/H
TOHFP
TTOHEN
TFP
GTOCLK
TPOHCLK
TPOHFP
Path
O/H
Insert
Tx Path O/H
Processor
Path
Trace
Buffer
Rx Path O/H
Processor
Path
O/H
Extract
TPOHEN
TPAIS
TPRDI
POP[3:0]
Parallel
Input/Output Port
Tx ATM Cell
Processor
Rx ATM Cell
Processor
Microprocessor I/F
PIP[3:0]
TCP
XOFF
TGFC
Tx ATM
4 Cell
FIFO
Rx ATM
4 Cell
FIFO
TDO
TMS
TCK
TDI
JTAG Test
Access Port
Drop
Side
I/F
TRSTB
TSOC
TDAT[15:0]
TXPRTY[1:0]
TCA
TWRENB
TFCLK
RSOC
RDAT[15:0]
RXPRTY[1:0]
RCA
RRDENB
RFCLK
RBYP
LOF
LOS
RSD,RSOW,RSUC
RSDCLK,ROWCLK
LAIS
LRDI
RLDCLK
RTOH
RTOHFP
RTOHCLK
RLD,RLOW
ROHFP
GROCLK
RPOHTPOH
RPOHFP
LOP
PRDI
RPOHCLK
PAIS
LFO
LF+/-
RATP
LCD
A[7:0]
D[7:0]
ALE
CSB
RDB
WRB
INTB
RSTB
RCP
RGFC
TSEN
BUS8
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Loopback Modes
Synthesizer
SERIAL
LINE
LOOPBACK
Clock
PISO
Clock
Recovery
SIPO
Tx
Section O/H
Processor
DIAGNOSTIC
LOOPBACK
Section O/H
Processor
SERIAL
Rx
Section
Trace
Buffer
Transport
O/H
Insert
Tx
Line O/H
Processor
Rx
Line O/H
Processor
Transport
O/H
Extract
Path
O/H
Insert
Tx Path O/H
Processor
Path
Trace
Buffer
Rx Path O/H
Processor
Path
O/H
Extract
Parallel
Input/Output Port
Tx ATM Cell
Processor
PARALLEL
DIAGNOSTIC
LOOPBACK
Rx ATM Cell
Processor
Microprocessor I/F
Tx ATM
4 Cell
FIFO
Rx ATM
4 Cell
FIFO
JTAG Test
Access Port
Drop
Side
I/F
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DESCRIPTION
The PM5347 S/UNI-PLUS SATURN User Network Interface is a monolithic
integrated circuit that implements the SONET/SDH processing and ATM mapping
functions of a 155 or 51 Mbit/s ATM User Network Interface.
The S/UNI-PLUS receives SONET/SDH streams using a bit serial interface,
recovers the clock and data and processes section, line, and path overhead. It
performs framing (A1, A2), descrambling, detects alarm conditions, and monitors
section, line, and path bit interleaved parity (B1, B2, B3), accumulating error
counts at each level for performance monitoring purposes. Line and path far end
block erro r indications (M0 or M1, G1) are also accumulated. The S/UNI-PLUS
interprets the received payload pointers (H1, H2) and extracts the synchronous
payload envelope which carries the received ATM cell payload. In addition to its
basic processing of the received SONET/SDH overhead, the S/UNI-PLUS
provides convenient access to all overhead bytes, which are extracted and
serialized on lower rate interfaces, allowing additional external processing of
overhead, if desired.
The S/UNI-PLUS frames to the ATM payload using cell delineation. HCS error
correction is provided. Idle/unassigned cells may be dropped according to a
programmable filter. Cells are also dropped upon detection of an uncorrectable
header check sequence error. The ATM cell payloads are descrambled. The
ATM cells that are passed are written to a four cell FIFO buffer. The received
cells are read from the FIFO using a generic 16- or 8-bit wide datapath interface.
Counts of received ATM cell headers that are errored and uncorrectable and also
those that are errored and correctable are accumulated independently for
performance monitoring purposes.
The S/UNI-PLUS transmits SONET/SDH streams using a bit serial interface and
formats section, line, and path overhead appropriately. It synthesizes the
transmit clock from a lower frequency reference and performs framing pattern
insertion (A1, A2), scrambling, alarm signal insertion, and creates section, line,
and path bit interleaved parity (B1, B2, B3) as required to allow performance
monitoring at the far end. Line and path far end block error indications (M0 or
M1, G1) are also inserted. The S/UNI-PLUS generates the payload pointer (H1,
H2) and inserts the synchronous payload envelope which carries the ATM cell
payload. In addition to its basic formatting of the transmitted SONET/SDH
overhead, the S/UNI-PLUS provides convenient access to all overhead bytes,
which are optionally inserted from lower rate serial interfaces, allowing external
sourcing of overhead, if desired. The S/UNI-PLUS also supports the insertion of
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PMC-941033ISSUE 6SATURN USER NETWORK INTERFACE PLUS
a large variety of errors into the transmit stream, such as framing pattern errors,
bit interleaved parity errors, and illegal pointers, which are useful for system
diagnostics and tester applications.
ATM cells are written to an internal four cell FIFO using a generic 16- or 8-bit
wide datapath interface. Idle/unassigned cells are automatically inserted when
the internal FIFO contains less than one cell. The S/UNI-PLUS provides
generation of the header check sequence and scrambles the payload of the ATM
cells. Each of these transmit ATM cell processing functions can be enabled or
bypassed.
No line rate clocks are required directly by the S/UNI-PLUS as it synthesizes the
transmit clock and recovers the receive clock using a 19.44 MHz or 6.48 MHz
reference clock. Optionally, receive clock recovery or transmit clock synthesis
may be bypassed.
The S/UNI-PLUS is configured, controlled and monitored via a generic 8-bit
microprocessor bus interface. The S/UNI-PLUS also provides a standard 5
signal IEEE 1149.1 JTAG test port for boundary scan board test purposes.
The S/UNI-PLUS is implemented in low power, +5 Volt, CMOS technology. It has
TTL and pseudo-ECL (PECL) compatible inputs and TTL/CMOS compatible
outputs and is packaged in a 208 pin PQFP package.
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PIN DIAG RAM
The S/UNI-PLUS is packaged in a 208 pin plastic QFP package having a body
size of 28 mm by 28 mm and a pin pitch of 0.5 mm.
recovery. If RBYP is high, RXD+/- is sampled on
the rising edge of RRCLK+/-. If RBYP is low, the
receive clock is recovered from the RXD+/- bit
stream. RBYP requires an external pull-down
resistor.
RXD+
RXD-
PECL
Input
135
136
The receive differential data inputs (RXD+, RXD-)
contain the NRZ bit serial receive stream. RXD+/-
is sampled on the rising edge of RRCLK+/- when
clock recovery is bypassed (the falling edge may
be used by reversing RRCLK+/-), otherwise the
receive clock is recovered from the RXD+/- bit
stream. Please refer to the Operation section for
a discussion of PECL interfacing issues.
RXDO+
RXDO-
Output131
132
The receive differential data outputs (RXDO+,
RXDO-) are sliced versions of the RXD+ and
RXD- inputs. These outputs are provided to allow
decision feedback equalization (DFE) to correct
baseline wander. It is intended that these outputs
be low pass filtered and attenuated to create an
appropriate correction signal that is summed with
incoming data to recover the low frequency
components.
RRCLK+
RRCLK-
PECL
Input
142
143
The receive differential reference clock inputs
(RRCLK+, RRCLK-) must be a jitter-free 19.44
MHz or 6.48 MHz reference clock when clock
recovery is enabled. When clock recovery is
bypassed, RRCLK+/- is nominally a 155.52 MHz
or 51.84 MHz 50% duty cycle clock and provides
timing for the S/UNI-PLUS receive functions. In
this case, RXD+/- is sampled on the rising edge of
RRCLK+/-. Please refer to the Operation section
for a discussion of PECL interfacing issues.
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