ALTO PROCESSORS

BL23571 4FE Multi Port GPON HGU with VoIP

Part of the Alto Family, the BL23571 is a cost-effective, low-power, and highly integrated GPON Processor optimized for rich service delivery in intelligent GPON applications.

The 3rd generation processor integrates a GPON MAC, SerDes, four Fast Ethernet MACs, VoIP DSP, PCIe, USB 2.0, and a DDR3 controller, along with unrivaled QoS management, security and hardware acceleration.

BL23571 features a powerful MIPS 74 Kc™ controller and the RunnerGrid Network Processor enabling unmatched service application flexibility with benchmark performance. The RunnerGrid instruction set has been designed from the ground up and is optimized to accelerate service and networking over a wide range of protocols and traffic management models, while maintaining wirespeed throughput. Each processor executes independently, giving maximum flexibility for the concurrent processing of CPE applications and high throughput networking services.

With BroadLight’s field-proven and ITU-interoperable software, the BL23571 enables cost effective, low-risk development and the fastest time-to-market implementations of ONT applications.

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Block Diagram

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Application Diagram

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FEATURES

GPON ITU-T G.984 MAC

CDR/SerDes circuitry with glueless interface to MSA optical transceivers

Four Fast Ethernet MACs supporting Energy Efficient Ethernet (EEE)

The RunnerGrid Network Processor enables Layer 2, 3 and 4 wire speed packet processing, flexible classification and filtering and deep packet inspection (DPI) functions

VoIP DSP provides seamless connectivity to industry standard SLICs via PCM and up to four voice channels, including T.38 Fax. Simultaneous mix of Voice Codecs supported

USB 2.0 Host Controller

PCIe port for Master/Target controller

500 MHz MIPS 74 Kc™ 32-bit RISC core with 32 kB instruction cache and 32 kB data cache

The System Integration Unit (SIU) consists of a DDR memory controller, interrupt controller, UART, SPI, I2C and general-purpose I/Os

External memory: 400 MHz DDR3 SDRAM from 256Mb to 4Gb; 16-bit interface

Advanced Low-power modes

SPECIFICATIONS

MIPS 74 Kc™Core

500 MHz MIPS 74 Kc, 32 kB Instruction/Data cache

High-performance, low-power, RISC core

32-bit address paths

128-bit data path for instruction cache and 64-bit or 128-bit data path for data cache

64-bit data paths to external interface

Runner Grid Network Processor

RunnerGrid Network Processor enables Layer 2, 3 and 4 wire speed packet processing, flexible classification and filtering and deep packet inspection (DPI) functions

Data path processing tasks such as 802.1d bridge forwarding and routing

Optimized for wire speed packet processing

The accelerator blocks increased processor performance by speeding up time-consuming tasks through dedicated hardware

Ethernet Interface

Four IEEE 802.3-compliant MACs

1000/100/10 Mbps operation: MAC-to-MAC mode can be supported without Auto-negotiation

Configurable 802.3x flow control for full-duplex operation mode

4 × SS-SMII Fast Ethernet interfaces

GPON Optical Interface

Integrated CDR 2.5/1.25 Gbps

Glueless interface to GPON transceivers

Single-ended and differential bursts enable output for glueless interface to two- and three-wavelength GPON transceivers

Configurable PRBS generator and comparator supporting PBRS7, PBRS23 and PBRS31

PCIe Interface

Supports PCIe Base Specification 1.1

Single-lane 2.5 GT/s PCIe Root Complex for interfacing industry-standard PCIe devices.

USB Interface

USB host port that supports USB2.0 and USB1.1

Supports EHCI (USB2.0) and OHCI (USB1.1)

12 MHz reference clock for PHY is provided by internal PLLs

VoIP

Comprehensive voice telephony solution

Patent infringement indemnification

Embedded VoIPerfect voice engine

Supports up to 4 Voice channels

Seamless PCM connectivity to industry standard SLICs

Two Conference bridges supporting 2 × 3-Way calling

Adaptive Jitter Buffer up to 200 ms

VAD-Voice Activity Detection and CNG-Comfort Noise Generation

Compliant with industry leading softswitches

Voice CODECs

G.711 64 kbps A-law/µ-law/Linear PCM

G.729A/AB 8 kbps CS-ACELP

G.723.1/A 6.4/5.3 kbps MP-MLQ/ACELP

G.726 40/32/24/16 kbps ADPCM

G.168 Echo canceller up to 32 ms

T.38 Fax relay

Telephony call features

DTMF generator/detector/relay

Fax/Modem Detection

Automatic Level Control

Caller ID

Supplementary services

Physical

16 × 16 mm LFBGA-313

Operating temperature -40 to 85°C with no heat sink and no airflow