PM7388
Preliminary
Frame Engine and Datalink Manager
FREEDM 336A1024
PMC-1991475 (p2)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
Copyright PMC-Sierra, Inc. 2001
FEATURES
Single-chip multi-channel packet
processor supporting line rate
throughput transfers of packet sizes
from 40 to 9.6 Kbytes, for up to an
aggregate of 336 T1s, 252 E1s, or 12
DS-3s.
Provides simultaneous support of
PPP, Frame Relay, Multilink-PPP and
Multilink-Frame Relay protocols.
Alternative protocols supported via
HDLC termination and full packet store
of the data within the HDLC structure.
MULTILINK PPP AND FRAME
RELAY BUNDLES
Capable of supporting fragment sizes
from 1 to 9.6 Kbytes.
Support for 3 egress fragmentation
sizes (128, 256, and 512 bytes)
configurable on a per multilink bundle.
Optionally full packet transfers are
supported on a per bundle basis.
Supports up to 168 multilink bundles
with up to 12 member links per bundle.
These bundles are composed of
independent HDLC channels.
Support for up to 100 ms of intra
bundle skew in the receive direction
when supporting the minimum.
fragment size.
Support for PPP header compression
as per RFC 1661.
PPP
Support for 16 COS levels in
accordance with RFC 2686.
Either 12 bit or 24 bit sequence
number, with short and long fragment
header formats, is supported.
Link Control protocol packets are
identified by the PID as control
protocols and will be forwarded to the
Any-PHY interface.
FRAME RELAY
Link layer address lookup can be
performed based on HDLC channel
and 10 bit DLCI for HDLC channels
supporting Frame Relay protocols.
The lookup algorithm can support a
maximum of 16 K connection
identifiers (CIs) amongst multilink FR
bundles. The connection identifiers
are ignored in singlelink FR channels.
Control frames are identified and
forwarded to Any-PHY interface.
12 bit sequence numbers supported.
FECN, BECN, and DE ingress
processing as per FRF.12.
Rx ANY-PHY
I/F
(RAPI-12)
RXCLK
RVAL
RSX
RSOP
REOP
RMOD
RXDATA[15:0]
RXPRTY
RENB
RPA
RXADDR[3:0]
RERR
SRAM
Controller
(SRAMC)
CCDAT[35:0]
CCBSELB[1:0]
CCWEB
CCADD[17:0]
CCSELB
CB DRAM
Controller
(CB_DRAMC)
CBDAT[47:0]
CBRASB
CBWEB
CBADD[12:0]
CBCSB
CBCASB
CBBS[1:0]
Microprocessor I/F (BUMP2)
A
D
[
31:
0]
R
EAD
Y
B
B
URS
T
B
CS
B
IN
TL
O
B
WR
D
O
N
E
B
BC
L
K
AD
SB
WR
BL
AST
BT
ER
M
B
IN
TH
IB
BU
SPO
L
Tx
Fragment
Builder
(TFRAG)
Tx ANY-PHY
I/F (TAPI-12)
TXCLK
TEOP
TMOD
TERR
TRDY
TSX
TXPRTY
TXDATA[15:0]
TPA
TXADDR[15:0]
Egress
Queue
Manager
(EQM-12)
Ingress
Queue
Manager
(EQM-12)
Frame
Builder
(FRMBLD)
Rx
Fragment
Builder
(RFRAG)
RS DRAM
Controller
(RS_DRAMC)
RS
W
E
B
R
SBS[1
:
0
]
R
S
C
ASB
R
S
R
ASB
RS
CS
B
DQ
M
RS
A
DD[
12:
0]
RS
DA
T
[
31:
0]
Rx HDLC
Processor /
Partial Packet
Buffer
(RHDL-12)
Performance
Monitor
(PM-12)
Extract
SBI
(EXSBI-
336)
DC1FP
DV5
DPL
DDP
DDATA[7:0]
Tx HDLC
Processor /
Partial Packet
Buffer
(THDL-12)
Receive
Channel
Assigner
(RCAS-12)
RC
LK
[
11:
0]
T
C
L
K
[
1
1
:
0
]
T
D
[
11:
0]
JTAG
TD
O
TM
S
TC
K
TD
I
TR
S
T
B
Insert
SBI
(INSBI-
336)
AJUST_REQ
AV5
APL
ADP
ADATA[7:0]
CIFPOUT
ACIFP
Transmit
Channel
Assigner
(TCAS-12)
REFCLK
Data
Control
DDLL-
140
SYSC
L
K
RS
T
B
SC
AN
_
E
N
PM
C
T
ES
T
RD
[
11:
0]
DLLT
E
S
T
BLOCK DIAGRAM
Head Office:
PMC-Sierra, Inc.
8555 Baxter Place
Burnaby, B.C. V5A 4V7
Canada
Tel: 604.415.6000
Fax: 604.415.6200
Frame Engine and Datalink Manager
To order documentation,
send email to:
document@pmc-sierra.com
or contact the head office,
Attn: Document Coordinator
All product documentation is available
on our web site at:
http://www.pmc-sierra.com
For corporate information,
send email to:
info@pmc-sierra.com
PMC-1991475 (p2)
Copyright PMC-Sierra, Inc. 2001.
All rights reserved. August 2001.
Any-PHY, SPECTRA-2488, TEMUX-
84, FREEDM-336A1024,SBI, and
PMC-Sierra are trademarks of
PMC-Sierra, Inc.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
Preliminary
PM7388 FREEDM 336A1024
HDLC
Support for up to 1024 bidirectional
HDLC channels, with individual HDLC
channel speeds ranging from 56 Kbps
to 52 Mbps. In a channelized
application, the number of time-slots
assigned to an HDLC channel is
programmable from 1 to 24 (for T1/J1)
and from 1 to 31 (for E1).
The 1024 HDLC channels can be
assigned to a mixture of physical links
via the 77 MHz SBI interface. The SBI
transports the equivalent of 12 STS-1
synchronous payload envelopes
(SPE). Each STS-1 SPE can be
individually configured to carry 28
T1/J1s, 21 E1s or 1 DS3.
For each channel, supports
programmable flag sequence detection
and generation, bit stuffing and de-
stuffing, and validation and generation
of either CRC-CCITT or CRC-32 frame
check sequences.
For each channel, the receiver checks
for packet abort sequences, octet
aligned packet length and for minimum
and maximum packet length.
INTERFACES
104 MHz, 8 bit Any-PHY Level 3 or 52
MHz Any-PHY Level 2 packet interface
for transfer of packet, frame or
fragment data using an external
controller. The interface is capable of
supporting full datagram transfer on a
per Any-PHY channel basis, or
fragmented packets or frames on a per
Any-PHY channel basis.
A 77 MHz SBI bus supporting up to
336 links.
12 separate clock and data interfaces
to support 12 links of arbitrary data rate
up to 52 MHz (eg, DS3/E3). The
device can be configured to process
data from either the clock and data
interfaces or from the SBI on a per
clock-data-link/SPE basis.
A 100 MHz, 48-bit SDRAM interface
for ingress and egress per
packet/fragment storage.
A 100 MHz, 32-bit SDRAM interface
for ingress re-sequencing data.
structures.
A 100 MHz, 36-bit SSRAM interface
for Ingress/Egress Context storage.
Provides a standard 5 signal P1149.1
JTAG test port for boundary scan.
A 32-bit microprocessor interface for
configuration and status monitoring.
TECHNOLOGIES
40 mm x 40 mm, 520 pin (1.27 mm
pitch) enhanced ball grid array (SBGA)
package.
Low power 0.18 mm CMOS
technology using 1.8 V core power and
3.3 V I/O.
APPLICATIONS
IETF PPP interfaces for routers.
Frame Relay interfaces for ATM or
Frame Relay switches and
multiplexers.
Internet/Intranet access equipment.
TYPICAL APPLICATION
PM5315
SPECTRA-
2488
SER
DES
PM8316
TEMUX-84
PM8316
TEMUX-84
PM8316
TEMUX-84
PM8316
TEMUX-84
PM7388
FREEDM-
336A1024
PM7388
FREEDM-
336A1024
PM7388
FREEDM-
336A1024
PM7388
FREEDM-
336A1024
TelecomBus
SBI
OC-48
OC-48 PORT CARD SOLUTION
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