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PAS7401
GPON ONT SOC
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Features
The PAS740x device family is PMC-Sierra's second generation
GPON ONT System-on-a-Chip (SoC) device family, dedicated for
use in GPON (ITU-T G.984) networks. The PAS740x devices are
optimized 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 PAS740x
devices integrate GPON SERDES, MAC and packet processing
functions, together with an integrated ARM926 controller,
Gigabit Ethernet (GbE) user interfaces, a TDM interface, and a
dedicated DSP for VoIP processing (on PAS7401V only).
The PAS740x device family is based on PMC-Sierra's field proven
GigaPASS networking architecture, which provides marketleading
throughput and quality of service (QoS). The
PAS7401/7401V provide simultaneous, sustained 2 Gbit/s
downstream and 1.244 Gbit/s upstream throughput at all packet
sizes. The GigaPASS networking engine provides TR-101
compliant 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