參數(shù)資料
型號: 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): 10/56頁
文件大?。?/td> 432K
代理商: PONE-000-01
March 2000
CEWay
PL-One Data Sheet
D-CW-0100-04
Page 10 of 56
Bits in Ph_Confirm_Reg
Bit
Description
col/rx
Description: Collision/Reception. In the XMIT state, it
indicates the detection of a collision with another frame during the
transmission of the Preamble field. In the RCV state, it indicates that you are
past the Preamble and PEOF and into the body of a packet.
HW Reset state: 0
Enable trigger: Set to 1 when a collision is detected during transmission of the
Preamble (when the PLSES transmits an INFERIOR but detects a
SUPERIOR state on the medium). Also set to 1 as soon as the PLSES has
detected a PEOF in reception, and remains at 1 throughout the reception. It
remains enabled for a Carrier Lost indication.
Reset trigger: It is reset when the PLSES Handshake Interrupt is reset.
Special constraints: Following a collision the PLSES will automatically
transition from its XMIT state to its RCV state. At the same time,
ch_active
is
enabled since a SUPERIOR Preamble symbol has been detected over our
INFERIOR Preamble symbol.
be/bf
Description: Buffer Empty/Buffer Full. In XMIT state, it
indicates that the Ph_Tx_Buffer has been transmitted successfully and is
empty. This flag is also set to 1 when the CRC checksum has been
appended to the end of the frame and transmitted. In RCV state, it indicates
that the data within the Ph_Rx_Buffer is valid.
HW Reset state: 0
Enable trigger: Set to 1 after the PLSES has transmitted on the medium a
previous packet field part, via a request with the Ph_Request_Reg. Set to 1
when the PLSES has stored packet Preamble symbols or Data symbols in
the Ph_Rx_Buffer.
Reset trigger: It is reset when the PLSES Handshake Interrupt is reset.
gd_packet
Description: Good Packet. In RCV state, it indicates that no error
has been detected in the CRC checksum. If it is not set after having received
the CRC, it means that the incoming packet was corrupted during the
communication.
HW Reset state: 0
Enable trigger: Set to 1 after the last CRC symbol has been received and the
CRC checksum has been verified as successful.
Reset trigger: It is reset when the PLSES Handshake Interrupt is reset.
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