RTL8671B Datasheet – ADSL2+ Router Controller
Integrated ADSL2+ Router Controller
RTL8671B overview
The RTL8671B is an Integrated ADSL2+ Router Controller made by Realtek, supplied in an LQFP 128 Pin Type package. The absolute maximum ratings table on this page lists the 4 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the RTL8671B pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The Realtek RTL8671B/ RTL8671BH are integrated SoC featuring a RISC, an ADSL2+ Discrete Multi-tone (DMT) data-pump, a hardware-based ATM Segmentation and Reassembly (SAR), two 10/100Mbps IEEE 802.3 compliant MACs with an embedded Ethernet transceiver, and a USB PHY port. Mated with the Realtek RTL8271B (ADSL2+ Analog Front End), RTL8671B/ RTL8671BH provide a low cost integrated solution for ADSL2+ CPE modems, routers, or gateways.
RTL8671B/ RTL8671BH encompass high-performance DSP technologies, optimized mix-signal designs, and an efficient architecture to provide a seamless WAN to LAN router controller. The embedded RISC network processor supports the MIPS I instruction set along with DSP extensions and achieves a 340MHz clock rate in a six-stage pipeline to support layer 2, 3, and other upper layer applications.
The DMT engine supports the upstream data rate from 32kbp to above 3Mbps and the downstream data rate from 32kbps to above 24Mbps throughput, and complies with:
The Ethernet interface offers high-speed transmission over CAT-5 UTP cable or CAT-3 UTP (10Mbps only) cable. Ethernet functions such as Crossover Detection & Auto-Correction and polarity correction are implemented to provide robust transmission and reception capability at high speeds.
Datasheet
RTL8671B features
- Two-chip ADSL2+ CPE solution: RTL8671B/ RTL8671BH (ADSL2+/Network Processor SoC) + RTL8271B (ADSL2+ Analog Front End).
- Field proven DMT data-pump complies with ANSI T1.413 Issue 2, ITU-T G992.1, G.992.2 , G.992.3, G.992.4, G.992.5 supporting Annexes A, B, I, J, L, and M. Supports S=1/3 coding.
- High performance embedded RISC with MMU, TLB and DSP instruction extension.
- Embedded hardware-based ATM SAR: up to 8 distinct VCs—ATM AAL5 adaptation, F4/F5 OAM cell, HEC, CRC, IP/TCP/UDP checksum offloading, and error packet filtering— and QoS supported for CBR, UBR, rt-VBR, and nrt-VBR.
- Embedded 10/100 Base-TX Ethernet MAC and transceiver supporting Crossover Detection & Auto-Correction and polarity correction, IP/TCP/UDP checksum offload supported as well.
- One on-chip USB PHY port supporting the host/device mode
- Support serial SPI interface for device control
- Network device management via HTTP, SNMP, and CLI (UART).
- IP layer processing, DHCP, NAT, and typical higher layer applications supported
- 16-bit-wide, 166MHz SDRAM support up to 256Mb
- 8/16-bit-wide parallel/SPI Flash support up to 128Mb
- 3.3V signaling, 1.2V core voltage; a embedded linear regulator controller to reduce an external LDO
- Two 32-bit timers and a watchdog timer
- Embedded “Dying-Gasp” detection circuit
- EJTAG interface
- Package of 128-pin LQFP available
RTL8671B pinout
Absolute maximum ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| I/O supply voltage | VDDIO | Min TBD / Max TBD | V |
| Core supply voltage | VDDC | Min TBD / Max TBD | V |
| Storage temperature | TSTG | Max TBD | |
| ESD protection | VESD | Max TBD | V |
RTL8671B applications
- Gigabit Ethernet Switches
- Network Routers
- Home Gateways
- Wireless Access Points
- VoIP (Voice over Internet Protocol) Equipment
Comments 0
Leave a comment