參數(shù)資料
型號(hào)： PS2000ACQ
英文描述： A Network Communication Controller Designed to Connect Any MCU Application System To A Gateway(單片網(wǎng)絡(luò)通信控制器,用于控制MCU和網(wǎng)絡(luò)服務(wù)器之間的信息交換)
中文描述： 通信控制器的網(wǎng)絡(luò)連接任何設(shè)計(jì)單片機(jī)應(yīng)用系統(tǒng)到一個(gè)網(wǎng)關(guān)（單片網(wǎng)絡(luò)通信控制器，用于控制微控制器和網(wǎng)絡(luò)服務(wù)器之間的信息交換）
文件頁(yè)數(shù)： 29/54頁(yè)
文件大?。?/td> 594K
代理商： PS2000ACQ
PS2000A Datasheet
Doc. Number:
TECINHD001
Version 1.0
3/1/2002
P&S DataCom Corporation
25
9.5
Troubleshooting
During the communication process between the MCU and the PS2000A, several
problems may occur.
Communication Timeout
The time from the initial request signal (/INT) from the PS2000A to the end of the
communication process should not exceed 500ms. Exceeding this time limit will cause
the communication to fault out.
In SPI mode, to indicate the starting of the response from the MCU to the
communication request of the PS2000A, the /CS issued by the MCU changes from high
to low.
In I
2
C mode, to indicate the starting of the response from the MCU to the communication
request of the PS2000A, the MCU issues the START timing signal.
MCU Communication Clock Frequency Incorrect
During the communication process, the MCU provides the clock signal. If the clock
frequency is too high, this may cause data transfer errors; if the clock frequency is too
low, this may cause a communication timeout. The clock frequency must be set
correctly.
Data Packet Size Error
The data packet transfer is controlled by the packet size. If the size is set wrong, it may
cause a communication failure, or even cause MCU register conflicts. Therefore, it is
important to set the correct size of the data packets.
Timing Error
Sometimes, an external interference may cause the MCU to detect that the
communication timing is wrong. In this case, the MCU may withdraw from the
communication process. After the communication timeout, the MCU then will begin to
prepare for the next communication.
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