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| 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，如交換機，執(zhí)行器和傳感器的理想設(shè)備 |
| 文件頁數(shù)： | 9/56頁 |
| 文件大?。?/td> | 432K |
| 代理商： | PONE-000-01 |
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March 2000
CEWay
PL-One Data Sheet
D-CW-0100-04
Page 9 of 56
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Ph_Confirm_Reg
jabber
rx_del
0
rx_del
1
gd/packet
be/bf
col/rx
ch_noisy
ch_active
0
0
0
0
0
0
0
Table 2 Ph_Confirm_Reg in Idle State
Bits in Ph_Confirm_Reg
Bit
Description
ch_active
(MSB)
Description: Channel active indicates the presence of a CEBus-
like signal on the channel.
Hardware (HW)Reset state: 0
Enable trigger: Set to 1 whenever a chirp is detected on the medium. It is
maintained as long as chirps continue to be detected. This includes the
special behavior described for the Ph_Confirm_Reg
col/rx
flag. It is also
maintained while PLSES receives one symbol and is trying to identify a
symbol noise condition as described for the Ph_Confirm_Reg
ch_noisy
flag.
Reset trigger: It is reset as soon as the reception of a packet ends (after the
reception of the CRC or after a Carrier Lost), when already within the RCV
state. If in the IDLE state, it means it was activated from a Symbol Noise. It
should then be reset as soon as
ch_noisy
is enabled.
Description: Channel noisy. In IDLE state, it indicates the
presence of an isolated strong peak on the channel (Symbol Noise). At the
transition from IDLE to the RCV state, it indicates a frame buried in noise
(Medium Noisy). During the rest of the RCV state, it indicates the loss of the
carrier (Carrier Lost).
HW Reset state: 0
Enable trigger: Symbol Noise: Set to 1 when one SUPERIOR Preamble
symbol, or 1 PEOF delimiter symbol, followed by 5 consecutive INFERIOR
Preamble symbols (1.14 USTs) have been detected. As soon as the 5
th
consecutive symbol is identified as an INFERIOR,
ch_noisy
is set to 1.
Medium Noisy: It is also set to 1 when only 3 to 6 (inclusive) PEOF symbols
were detected. Carrier Lost: It is set to 1 when, after having received at least
a PEOF and any other symbols after that PEOF, and before a complete CRC
has been received, an INFERIOR state is detected on the medium.
Reset trigger: In a Symbol Noise condition, it is reset as soon as a new chirp
is detected. If no new chirps are detected, or for the two other conditions, it is
reset when the PLSES Handshake Interrupt is reset.
ch_noisy
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