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DP83640TVVX/NOPB

更新时间： 2024-01-13 13:19:58
品牌 Logo 应用领域
德州仪器 - TI 网络接口电信集成电路电信电路以太网：16GBASE-T
页数 文件大小 规格书
137页 1347K
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DP83640 Precision PHYTER - IEEE 1588 Precision Time Protocol Transceiver

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DP83640TVVX/NOPB 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active包装说明：GREEN, PLASTIC, LQFP-48
Reach Compliance Code：compliantECCN代码：5A991.B.1
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.48Is Samacsys：N
数据速率：100000 MbpsJESD-30 代码：S-PQFP-G48
JESD-609代码：e3长度：7 mm
湿度敏感等级：3功能数量：1
端子数量：48收发器数量：1
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：LFQFP
封装等效代码：QFP48,.35SQ,20封装形状：SQUARE
封装形式：FLATPACK, LOW PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
电源：3.3 V认证状态：Not Qualified
座面最大高度：1.6 mm子类别：Network Interfaces
标称供电电压：3.3 V表面贴装：YES
技术：CMOS电信集成电路类型：ETHERNET TRANSCEIVER
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7 mmBase Number Matches：1

DP83640TVVX/NOPB 数据手册

 浏览型号DP83640TVVX/NOPB的Datasheet PDF文件第6页浏览型号DP83640TVVX/NOPB的Datasheet PDF文件第7页浏览型号DP83640TVVX/NOPB的Datasheet PDF文件第8页浏览型号DP83640TVVX/NOPB的Datasheet PDF文件第10页浏览型号DP83640TVVX/NOPB的Datasheet PDF文件第11页浏览型号DP83640TVVX/NOPB的Datasheet PDF文件第12页 
DP83640  
www.ti.com  
SNOSAY8E –SEPTEMBER 2007–REVISED APRIL 2013  
2.3.2 PACKET TIMESTAMPS  
2.3.2.1 IEEE 1588 Transmit Packet Parser and Timestamp  
The IEEE 1588 transmit parser monitors transmit packet data to detect IEEE 1588 Version 1 and Version  
2 Event messages. The transmit parser can detect PTP Event messages transported directly in Layer2  
Ethernet packets as well as in UDP/IPv4 and UDP/IPv6 packets. Upon detection of a PTP Event  
Message, the device will capture the transmit timestamp and provide it to software.  
Since software knows the order of packet transmission, only the timestamp is recorded (there is no need  
to record sequence number or other information). The device can buffer four timestamps.  
If enabled, an interrupt may be generated upon a Transmit Timestamp Ready.  
2.3.2.1.1 One-Step Operation  
In some cases, the transmitter can be set to operate in a One-Step mode. For Sync Messages, a One-  
Step device can automatically insert timestamp information in the outgoing packet. This eliminates the  
need for software to read the timestamp and send a follow up message.  
2.3.2.2 IEEE 1588 Receive Packet Parser and Timestamp  
The IEEE 1588 receive parser monitors receive packet data to detect IEEE 1588 Version 1 and Version 2  
Event messages. The receive parser can detect PTP Event messages transported directly in Ethernet  
packets as well as in UDP/IPv4 and UDP/IPv6 packets. Upon detection of a PTP Event message, the  
device will capture the receive timestamp and provide the timestamp value to software. In addition to the  
timestamp, the device will record the 16-bit SequenceId, the 4-bit messageType field, and generate a 12-  
bit hash value for octets 20-29 of the PTP event message. The device can buffer four timestamps.  
An interrupt will be generated, if enabled, upon a Receive Timestamp Ready.  
2.3.2.2.1 Receive Timestamp Insertion  
The DP83640 can deliver the timestamp to software by inserting the timestamp in the received packet.  
This allows for a simple method to deliver the packet to software without having to match the timestamp to  
the correct packet. This also eliminates the need to read the receive timestamp through the Serial  
Management Interface.  
2.3.2.3 NTP Packet Timestamp  
The DP83640 may be programmed to timestamp NTP packets instead of PTP packets. This operation is  
enabled by setting the NTP_TS_EN control in the PTP_TXCFG0 register. When configured for NTP  
timestamps, the DP83640 will timestamp packets with the NTP UDP port number rather than the PTP port  
number (note that the device cannot be configured to timestamp both PTP and NTP packets). One-Step  
operation is not supported for NTP timestamps, so transmit timestamps cannot be inserted directly into  
outgoing NTP packets. Timestamp insertion is available for receive timestamps but must use a single,  
fixed location.  
2.3.3 EVENT TRIGGERING AND TIMESTAMPING  
2.3.3.1 IEEE 1588 Event Triggering  
The DP83640 is capable of being programmed to generate a trigger signal on an output pin based on the  
IEEE 1588 time value. Each trigger can be programmed to generate a one-time rising or falling edge, a  
single pulse of programmable width, or a periodic signal.  
For each trigger, the microcontroller specifies the desired GPIO and time that the activity is to occur. The  
trigger is generated when the internal IEEE 1588 clock matches the desired activation time.  
Copyright © 2007–2013, Texas Instruments Incorporated  
Device Information  
9
Submit Documentation Feedback  
Product Folder Links: DP83640  
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DP83640TVVX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
DP83640TVV/NOPB TI

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 DP83640 Precision PHYTER - IEEE 1588 Precision Time Protocol Transceiver

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