RTL8305NB-CG - Brand New REALTEK IC Chips
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Description
The RTL8305NB-CG is a single chip switch controller designed for a 5-port integrated switch system. It incorporates 5 MACs (Media Access Controller), 5 physical layer transceivers, 1-Mbit SRAM, and 1K-entry look-up table into one single chip. The RTL8305NB-CG contains 5 ports, and each one provides support for a 10Base-T (10Mbps) or 100Base-TX (100Mbps) network connection. The fifth port (port 4) can be configured as a MII/SNI to work with a routing engine, HomePHY, or a fiber transceiver for a 100Base-FX application. Each operation mode can be easily set up by hardware strapping upon restart or power-on. With the least peripheral components and using a 25MHz crystal or OSC input, this chip has the best system cost structure. The RTL8305NB-CG is designed for unmanaged operation through hardware strapping upon reset to achieve the least power consumption and ease of use for SOHO 5-port switch or xDS/Cable router applications.
Specifications and features
- 5-port integrated switch with physical layer and transceiver for 10Base-T and 100Base-TX with 5-port 10/100M UTP or 4-port 10/100M UTP + 1-port MII/SNI
- PHY mode MII/SNI interface for router application
- MAC mode MII interface for HomeLAN/100Base-FX application
- 1Mbit internal RAM for packet buffer
- Internal 1K look-up table entries
- 25MHz crystal or OSC input
- Non-blocking wire-speed reception and transmission
- Fully compliant with IEEE 802.3/802.3u
- Supports broadcast storm filtering function
- Support full duplex 802.3x flow control and half-duplex back-pressure flow control
- LED indicators for link/activity, speed, full/half duplex and collision
- LEDs blinking upon reset for LED diagnostics
- Unmanaged operation by strapping upon reset
- Power saving with cable detection
- Low power consumption at 3.3V operating voltage
- 128-pin PQFP package
Application Scenarios
The RTL8305NB-CG is best suited for use in unmanaged SOHO 5-port switch systems and xDSL/Cable modem routers. It can also be easily integrated with HomePHY, routing engines, or fiber transceivers for a 100Base-FX application.
Comparison
Advantages- Integration of 5 MACs, 5 physical layer transceivers, 1-Mbit SRAM, and 1K-entry look-up table into one single chip.
- Low power consumption at 3.3V operating voltage.
- Non-blocking wire-speed reception and transmission.
- Fully compliant with IEEE 802.3/802.3u.
- Support for broadcast storm filtering function and full duplex 802.3x flow control and half-duplex back-pressure flow control.
Disadvantages- The RTL8305NB-CG is designed for unmanaged operation, limiting its functionality in more complex network scenarios.
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Datasheet
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Shopping guide
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- Datasheet: Download RTL8305NB-CG
- Chipdatas Part: CD86-RTL8305NB-CG
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
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- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 16:39 +0800
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