規格
| 屬性 | 價值 |
| Supplier | Microchip Technology |
| Package | Tray |
| ProductStatus | Active |
| Type | Transceiver |
| Protocol | MII, RMII |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Full |
| Voltage-Supply | 2.375V ~ 2.625V |
| OperatingTemperature | 0°C ~ 70°C |
| MountingType | Surface Mount |
| Package/Case | 48-TQFP |
概述
Description
KSZ8721BT is Microchip’s single-port Ethernet PHY transceiver. It provides the physical layer to connect a MAC (usually in a microcontroller or FPGA) to a copper Ethernet cable. It supports 10/100BASE-TX, auto-negotiation, full- and half-duplex operation, and IEEE 802.3. It interfaces to the MAC via standard MII or RMII, requiring minimal external components. It includes features like auto MDI/MDI-X to simplify cabling, and has low-power modes and standard compliance. It is typically used in embedded Ethernet designs where the MAC is implemented in a microcontroller or FPGA.
Features
Here are the key features of KSZ8721BT (Fast Ethernet PHY):
- 10/100BASE-TX PHY transceiver for Ethernet
- Interface: RMII (and MII) to MAC
- Auto-negotiation: supports 10/100 Mbps, full/half duplex
- Auto MDI/MDI-X
- MDIO/MDC management interface for PHY registers
- LED outputs for Link/Activity/Speed status
- Energy Efficient Ethernet (IEEE 802.3az) and low-power modes
- Industrial temperature range: -40°C to +85°C
- Small footprint package (32-pin QFN/SOIC family) with standard 3.3V supply
Note: Always verify exact package options and temp range from the specific KSZ8721BT datasheet variant you intend to use.
- 10/100BASE-TX PHY transceiver for Ethernet
- Interface: RMII (and MII) to MAC
- Auto-negotiation: supports 10/100 Mbps, full/half duplex
- Auto MDI/MDI-X
- MDIO/MDC management interface for PHY registers
- LED outputs for Link/Activity/Speed status
- Energy Efficient Ethernet (IEEE 802.3az) and low-power modes
- Industrial temperature range: -40°C to +85°C
- Small footprint package (32-pin QFN/SOIC family) with standard 3.3V supply
Note: Always verify exact package options and temp range from the specific KSZ8721BT datasheet variant you intend to use.
Pinout
- Pin count: 28 pins (28-pin package such as LQFP/SOIC)
- Function: 10/100 Mbps Ethernet PHY transceiver with RMII interface to the MAC, MDIO/MDC management port, TX/RX differential pairs, reference clock input, status LEDs, plus power, ground, reset, and optional interrupt line.
- Function: 10/100 Mbps Ethernet PHY transceiver with RMII interface to the MAC, MDIO/MDC management port, TX/RX differential pairs, reference clock input, status LEDs, plus power, ground, reset, and optional interrupt line.
Manufacturer
- Manufacturer: Microchip Technology Inc. (the KSZ8721BT comes from Microchip’s KSZ Ethernet PHY family; the brand originated with Micrel, which Microchip acquired).
- What kind of company: A global semiconductor company that designs and manufactures microcontrollers, analog, memory, and interface/communication ICs (an established provider of integrated circuit products).
- What kind of company: A global semiconductor company that designs and manufactures microcontrollers, analog, memory, and interface/communication ICs (an established provider of integrated circuit products).
Application
KSZ8721BT is a 10/100 Mbps Ethernet PHY. Common applications include:
- Embedded MCU-based designs using RMII/MII interfaces
- Industrial automation and control systems requiring reliable wired Ethernet
- Home/enterprise networking devices (routers, gateways, switches)
- IP cameras, video surveillance, and multimedia devices
- Network printers, scanners, and other Ethernet-enabled peripherals
- Set-top boxes, media players, and other consumer electronics with wired Ethernet
Notes: small footprint and low power, suited for embedded Ethernet PHY needs.
- Embedded MCU-based designs using RMII/MII interfaces
- Industrial automation and control systems requiring reliable wired Ethernet
- Home/enterprise networking devices (routers, gateways, switches)
- IP cameras, video surveillance, and multimedia devices
- Network printers, scanners, and other Ethernet-enabled peripherals
- Set-top boxes, media players, and other consumer electronics with wired Ethernet
Notes: small footprint and low power, suited for embedded Ethernet PHY needs.
Package
KSZ8721BT is available in a 28-pin QFN package (4x4 mm).
