Datasheet > AU5790D14-T

AU5790D14-T

更新时间： 2024-01-29 02:21:58

品牌	Logo	应用领域
飞利浦 - PHILIPS		电信光电二极管电信集成电路
页数	文件大小	规格书
25页	127K
描述
CAN Transceiver, 1-Trnsvr, PDSO14,

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技术参数
数据手册

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AU5790D14-T 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	SOP, SOP14,.25	Reach Compliance Code：	unknown
风险等级：	5.81	Is Samacsys：	N
数据速率：	100 Mbps	JESD-30 代码：	R-PDSO-G14
JESD-609代码：	e4	端子数量：	14
收发器数量：	1	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP14,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	12 V	认证状态：	Not Qualified
子类别：	Network Interfaces	最大压摆率：	85 mA
标称供电电压：	12 V	表面贴装：	YES
电信集成电路类型：	CAN TRANSCEIVER	温度等级：	AUTOMOTIVE
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
Base Number Matches：	1

AU5790D14-T 数据手册

Philips Semiconductors

Application note

AU5790 Single wire CAN transceiver

AN2005

Within CAN each node must synchronize to each other’s message on the first recessive to dominant edge of the message and all the other

recessive to dominant edges in the message waveform. Because each node has its own clock reference, the oscillator tolerance, ∆f, will affect

the bit time and the sample time, so ∆f has big impact on the synchronization. Meanwhile, CAN supports arbitration and in-frame

acknowledgment, which means after sending out a data bit the transceiver needs to read back the bus level, so the propagation delay between

nodes in the network must be limited to guarantee synchronization.

The propagation delay from node A to node B includes all the device delays in the transmission path from A to B, CAN controller A delay time,

transceiver A transmit delay, transceiver B receive delay, and bus line delay, etc. Since all nodes must receive each other’s signal, and

synchronize to it, then send them back during arbitration, the total propagation delay in the network should be the round trip delay.

Dietmayer and Overberg analyzed CAN bit timing requirements in detail in their SAE technical paper #970295[1]. By summarizing their analysis,

we can find that in order to guarantee CAN bit time requirement, the total propagation delay has to satisfy following equations:

(max) < t – t

– ( 25t – t

)* ∆f (1)

seg2

prop

bit

seg2

bit

(max) < t – t

– ( 25t – t

)* ∆f + t

(min)/2 – t (1- ∆f) (2)

prop Q

prop

bit

seg2

bit

seg2

The requirement on Equation (1) is more severe than that on Equation (2) if the minimum propagation delay is larger than 2* t .

2.1.2 Arbitration

If no device is transmitting a message, the network bus is in a recessive state, and any device may start to transmit a message. If more than

one device starts to transmit a message at the same time, only one device gets bus access successfully by bit arbitration using the identifier.

All devices on the bus are connected to the bus in a wired OR configuration. During arbitration, every device compares the read-back bus level

with the transmitted data level. If these levels are the same, the transmission continues. If a device sends a recessive level, and reads back a

dominant level, it has lost arbitration and has to stop sending any more bits, and becomes a receiver.

The following figure shows an arbitration example. Node 1, 2, and 3 start to send out message at the same time. At bit ID-23, node 2 sends a

recessive level, but the readback bus level is dominant, thus node 2 loses arbitration and becomes a receiver. Node 1 loses its arbitration at bit

ID-20. Node 3 finally wins bus access and continues message transmission.

ARBITRATION

CONTROL

DATA

ID 28 ... 18

RECEIVE

NODE 1

RECEIVE

NODE 2

NODE 3

DOMINANT

RECESSIVE

BUS-LEVEL

= ARBITRATION LOSS

BITS NOT SENT

SL01259

Figure 3. CAN bus arbitration

2001 Apr 16

1 2 345 6 7...25

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与AU5790D14-T相关器件

型号	品牌	描述	获取价格	数据表
AU5790D8	NXP	IC DATACOM, INTERFACE CIRCUIT, PDSO8, 3.90 MM, PLASTIC, MS-012, SOT-96-1, SOP-8, Network I	获取价格
AU5790D8	PHILIPS	CAN Transceiver, 1-Trnsvr, PDSO8,	获取价格
AU5790D8-T	NXP	IC DATACOM, INTERFACE CIRCUIT, PDSO8, PLASTIC, SOT-96, SO-8, Network Interface	获取价格
AU5790D-T	PHILIPS	CAN Transceiver, 1-Trnsvr, BICMOS, PDSO8,	获取价格
AU6254	ETC	USB2.0 Hub Controller	获取价格
AU6320	ETC	USB2.0 CF Card Reader Controller	获取价格

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