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PAS7401
GPON ONT SOC
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Features
The PAS7401 is PMC-Sierra's second generation GPON ONT System-on-
Chip (SOC), dedicated for use in a GPON (ITU-T G.984) network. The
PAS7401 is an optimized device for building a high-performance,
extremely low-power and low-cost GPON ONT in Single Family Unit
(SFU), Multiple Dwelling Unit (MDU), or similar configurations. The
PAS7401 integrates the GPON SERDES, MAC and packet-processing
functions, together with an integrated ARM9 controller and a dual Gigabit
Ethernet user interface.
The PAS7401 is based on PMC-Sierra's field-proven GigaPASS
networking architecture, which provides market-leading throughput
and quality of service (QoS). The PAS7401 provides simultaneous and
sustained 2 Gbit/s downstream and 1.244 Gbit/s upstream
throughput at all packet sizes. The GigaPASS networking engine
provides TR-101 based networking features, compliant with FSAN CTS
specifications, including 802.1p/q bridging, packet classification,
filtering and queuing, traffic shaping and policing.
PRODUCT BENEFITS
- Full ITU-T G.984 GPON ONT functionality with integrated CPU and a
comprehensive software package
- GigaPASS Wire-speed performance - Simultaneous 2 Gbit/s
downstream and 1.244 Gbit/s upstream sustained throughput at
any packet size.
- Advanced classification engine - supports classification, mapping
and filtering according to L2/L3/L4 fields, double-tagged VLANs,
MLD and IGMP multicast.
- Advanced QoS features - flexible queuing features enable queuing
per user/service with WFQ/SP scheduling, shaping, and policing per
queue
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- Power down modes - supports SuperSave power down mode, which
enables up to 95% ONT power reduction during power outages and
standby periods
- High Integration and RBOM optimization
- Interoperability - PAS7401 uses PMC field-proven GPON protocol stack and is guaranteed to provide the highest level of interoperability
- Low Power - Typical 1 W at 1 Gbit/s throughput
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FEATURES
- ITU-T G.984 compliant GPON ONT SOC
- Line rate operation - 2.488 Gbit/s downstream; 1.244 Gbit/s
upstream
- Supports 8 T-CONTs
- Supports 256 Port-IDs
- Supports NSR/SR DBA
- US and DS FEC
- AES decryption
- Integrated SERDES and CDR
- Embedded ARM926 controller
- Embedded VoIP subsystem supports four fully-featured VoIP
channels
- Throughput - 2 Gbit/s downstream and 1.244 Gbit/s upstream at
any packet size
- 802.1x authentication engine
- 802.3x flow control at the UNI
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- Multi-protocol classifier includes:
- Ethertype
- L2/L3/L4 source and destination address/IP/Port;
IPv4/IPv6 support
- Single/Double VLAN table; VLAN insert/remove/exchange
operations
- DSCP
- Multicast group (MLDv2 and IGMPv3)
- QoS and Traffic Shaping features:
- Internal frame buffer, dynamically shared between US and DS
- Multiple queues in upstream and downstream with flexible
mapping, shaping and scheduling per user/service
- Per Port-ID upstream configurable rate limiter and coloring
- Broadcast rate limiting
- 416-pin BGA package, 27 mm x 27 mm, industrial temp grade
- 1 W typical, 1.5 W thermal power consumption at 1 Gbit/s
throughput
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SOFTWARE
PAS7401 is provided with a comprehensive, turnkey-level software
package which includes:
- Fully featured GPON protocol stack and networking drivers
- Fully featured ONT OMCI stack
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- Based on Linux 2.6 kernel
- Maintains API compatibility to Chicago chipset
- API enables integrating 3rd party protocol stacks and applications
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REFERENCE DESIGN
The PAS740x reference platform is a fully featured GPON ONT. It is
available in the following configurations:
- Indoor ONT with 1 x PON, 4 x GE, 2 x POTSs
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- SFU with 1 x PON, 1 x GE, 2 x POTS, and Home Network adapter
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INTERFACES
- 2.488/1.244 Gbit/s GPON port with integrated CDR/SERDES
- 2 x GMII/MII Ethernet ports with optional 802.3ad link aggregation
for connectivity to standard switch ICs or PHY devices
- TDM - Dual DS1/E1 direct framer connection
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- 16-bit DDR2 SDRAM memory
- 32-bit memory controller for flash and peripherals access
- 16 x dedicated GPIO and 5 x alarm inputs, 12 x LED outputs
- UART and JTAG interfaces for debug and control
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PAS740x GPON ONT SoC Device Family [688 KB] PMC-2100187