參數(shù)資料
型號(hào): PONE-000-01
廠商: Electronic Theatre Controls, Inc.
英文描述: The ideal device for simple nodes, such as switches, actuators and sensor
中文描述: 在簡(jiǎn)單的節(jié)點(diǎn),如交換機(jī),執(zhí)行器和傳感器的理想設(shè)備
文件頁數(shù): 29/56頁
文件大?。?/td> 432K
代理商: PONE-000-01
March 2000
CEWay
PL-One Data Sheet
D-CW-0100-04
Page 29 of 56
XMIT_JABBER_DETECT Detected: If the Ph_Confirm_Reg
jabber
bit (jabber detected) is set and that the
PLSES is in the XMIT state, this indicates that the PLSES has transmitted 1000 consecutive SUPERIOR
symbols.
Process XMIT_JABBER_DETECT: You must reset the PLSES, via the Ph_Request_Reg
hw_reset
bit
(hardware reset). You must then wait for at least 10 000 USTs before attempting another transmission to
conform to the CEBus standard.
EOP Requested: If your last requested “next byte” to transmit was accompanied by the End-of_Packet
(EOP) delimiter (last byte to transmit), then, once the PLSES is done transmitting the EOP, it will generate
and start transmitting the CRC. If you did not request an EOP delimiter, you need to continue sending
other bytes to the PLSES.
Transmit CRC: Write 00 hex in the Ph_Tx_Buffer and 1011 0100 bin in the Ph_Request_Reg. Note that
even though this request includes an EOP delimiter, the PLSES will not transmit a second EOP. It will
simply generate and transmit the 16-bit CRC.
Do you want any XMIT_Time_Stamp Bytes: You might choose to retrieve the timestamp associated with
the transmission of your packet’s last CRC symbol. It is a 32-bit value with 279 nsec (four or six clock
cycles, depending on SELCLK.) It will be passed as four separate bytes in Ph_Rx_Buffer, in the LSByte
first order.
Read XMIT_Time_Stamp Byte: Read one timestamp byte from Ph_Rx_Buffer.
Do you want another XMIT_Time_Stamp Byte: You might choose to retrieve only a partial timestamp,
perhaps deducing the values of the most significant bytes. Anywhere between zero and four timestamp
bytes may be retrieved.
Request Next XMIT_Time_Stamp Byte: Write A1 hex to Ph_Request_Reg.
Reset XMIT State: Write 00 hex in the Ph_Request_Reg.
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