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PAS7400
GPON ONT SoC Device Family
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Features
The PAS7400 is one of 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 PAS7400 device is 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 PAS7400 device integrates a GPON SERDES, MAC and packet processing functions, together with an integrated ARM926
controller and a Gigabit Ethernet (GbE) user interface.
The PAS7400 device is based on PMC-Sierra's field proven GigaPASS networking architecture,
which provides market leading throughput and quality of service (QoS). The PAS7400 provide simultaneous,
sustained wirespeed 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 Highlights and Benefits
- Full ITU-T G.984 GPON ONT functionality with integrated
CPU and a complete software package
- GigaPASS Wire-speed performance - Simultaneous 2Gbs
downstream and 1.25Gbs upstream sustained throughput at
any packet size
- Advanced classification engine - Supports classification
according to L2/L3/L4 fields, Double tagged VLANs. IPv4- and
IPv6-ready
- Advanced QoS features - Flexible traffic management
enable queuing per user/service with WFQ/SP scheduling,
shaping and policing
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- Power down modes - Enable up to 95% ONT power saving
during power outages and standby periods
- Form factor and RBOM optimization - Featuring smallest
size package and PCB footprint
- Field proven Interoperability - Using GPON software stack
from PMC-Sierra
- Low Power - Typical 1W at 1Gbs throughput
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PAS740x Device Selection Matrix
| Device P/N | User Interfaces | Package |
| PAS7400B-NGI | 1xGMII/MII | 384 balls 17mm FBGA |
| PAS7401B-NGI | 2xGMII/MII | 384 balls 17mm FBGA |
| PAS7401BV-NGI | 2xGMII/MII VoIP (4 channels) | 384 balls 17mm FBGA |
Features
- ITU-T G.984 compliant GPON ONT SoC
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- Line rate operation - 2.488Gbps downstream;
1.244 Gbps 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
- Throughput - 2Gbps downstream and 1.25Gbps 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 include:
- Internal frame buffer, dynamically shared between US and
DS
- Multiple queues in upstream and downstream with flexible
mapping per user/service
- Dual-token leaky bucket shaper per queue for GBW and PBW
enforcement
- WFQ/SP scheduling
- Per Port-ID upstream configurable rate limiter and coloring
- Broadcast rate limiting
- 1W typical power consumption at 1Gbs throughput
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Interfaces
- 2.488/1.244 Gbps GPON port with integrated CDR/SERDES
- GMII/MII Ethernet ports with optional 802.3ad link aggregation for connectivity
to standard switch ICs or PHY devices
- 16 bit DDR2 SDRAM memory
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- 16 bit memory controller for FLASH and peripherals access
- 16x dedicated GPIO and 5x alarm inputs
- 12xLED outputs
- UART and JTAG interfaces for debug and control
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Software
PAS740x 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 open source Linux kernel
- API enables integration of customer applications
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PAS740x GPON ONT SoC Device Family [688 KB] PMC-2100187