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参数资料
| 型号： | DP83848YBX/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 31/86页 |
| 文件大小： | 0K |
| 描述： | IC TXRX ETHERNET PHYTERA 48-LQFP |
| 产品培训模块： | PHYTER® Family |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | 以太网 |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP 裸露焊盘 |
| 供应商设备封装： | 48-LQFP 裸露焊盘（7x7） |
| 包装： | 带卷 (TR) |
| 其它名称： | DP83848YBX |
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48
YB
reading the upper byte of the MISR. One or more bits in the
MISR will be set, denoting all currently pending interrupts.
Reading of the MISR clears ALL pending interrupts.
Example: To generate an interrupt on a change of link sta-
tus or on a change of energy detect power state, the steps
would be:
— Write 0003h to MICR to set INTEN and INT_OE
— Write 0060h to MISR to set ED_INT_EN and
LINK_INT_EN
— Monitor PWR_DOWN/INT pin
When PWR_DOWN/INT pin asserts low, user would read
the MISR register to see if the ED_INT or LINK_INT bits
are set, i.e. which source caused the interrupt. After read-
ing the MISR, the interrupt bits should clear and the
PWR_DOWN/INT pin will deassert.
5.6 Energy Detect Mode
When Energy Detect is enabled and there is no activity on
the cable, the DP83848YB will remain in a low power mode
while monitoring the transmission line. Activity on the line
will cause the DP83848YB to go through a normal power
up sequence. Regardless of cable activity, the DP83848YB
will occasionally wake up the transmitter to put ED pulses
on the line, but will otherwise draw as little power as possi-
ble. Energy detect functionality is controlled via register
Energy Detect Control (EDCR), address 0x1Dh.
5.7 Thermal Vias Recommendation
The following thermal via guidelines apply to GNDPAD, pin
49:
1. Thermal via size = 0.2 mm
2. Recommend 4 vias
3. Vias have a center to center separation of 2 mm.
Adherence to this guideline is required to achieve the
intended operating temperature range of the device.
Figure 14 illustrates an example layout.
Figure 14. Top View, Thermal Vias for GNDPAD, pin 49.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DP83849C | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PHYTER? DUAL Commercial Temperature Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver |
| DP83849C_08 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PHYTER? DUAL Commercial Temperature Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver |
| DP83849CVS | 功能描述:以太网 IC RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| DP83849CVS | 制造商:Texas Instruments 功能描述:TRANSCEIVER, ENET PHYTER, DUAL, 80TQFP 制造商:Texas Instruments 功能描述:TRANSCEIVER, ENET PHYTER, DUAL, 80TQFP; Data Rate:100Mbps; Ethernet Type:IEEE 802.3u; Supply Voltage Min:3V; Supply Voltage Max:3.6V; Digital IC Case Style:TQFP; No. of Pins:80; Interface Type:MII, RMII, Serial; Operating Temperature;RoHS Compliant: Yes |
| DP83849CVS/NOPB | 功能描述:以太网 IC RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
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