产品概览
The BCM84846A1KFSBLG is a Broadcom quad-port 10/100/1000 Ethernet PHY transceiver. Four independent GigE PHYs in a single device. RGMII/SGMII MAC interface. Energy Efficient Ethernet (EEE) support. 100m cable reach on Cat5e. BGA package for high-density networking equipment.
主要规格
| 类型 | Quad Port 10/100/1000 Ethernet PHY |
| Ports | 4 |
| Data Rates | 10/100/1000 Mbps per port |
| Interface | RGMII/SGMII to MAC |
| Cable Drive | 100m Cat5e (1000BASE-T) |
| EEE | Yes (IEEE 802.3az) |
| Auto-Negotiation | Yes |
| 电源电压 | 1.0V core, 3.3V I/O |
| Operating Temp | 0 to +70C |
| 包装 | BGA |
工作原理
Each of the four PHY cores implements the full IEEE 802.3 1000BASE-T, 100BASE-TX, and 10BASE-T physical layers. The PMA (Physical Medium Attachment) sublayer performs PAM-5 encoding/decoding for 1000BASE-T and MLT-3 for 100BASE-TX. The DSP-based equalizer cancels echo and near-end crosstalk (NEXT) from the bi-directional transmission on all four pairs. Auto-negotiation advertises and detects link partner capabilities. EEE reduces power during low-traffic periods by entering low-power idle (LPI) states.
应用
- Network switches
- Routers
- NIC cards
- Server networking