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參數(shù)資料
| 型號(hào)： | DM9801E |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1M home Phonrline Network Physical Layer Single Chip Transceiver |
| 中文描述： | 100萬家庭Phonrline網(wǎng)絡(luò)物理層單芯片收發(fā)器 |
| 文件頁數(shù)： | 48/61頁 |
| 文件大?。?/td> | 589K |
| 代理商： | DM9801E |
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DM9801
1M Home Phoneline Network Physical Layer Single Chip Transceiver
48
Preliminary
Version: DM9801-DS-P02
March 20, 2000
Data Receive Timing
The incoming waveform is formed from the transmitted
pulse along with any distortions and reflections that occur
in the wiring network. The receiver detects the point at
which the envelope of the received waveform crosses a
set threshold as described in the Receiver Functions
section.
Immediately after the receive threshold crossing, the
receiver disables any further detection for a period of
END_DATA_BLANK = PULSE_POSITION_0 - (minus) 3
TICs, starting with the detection of the pulse peak.
The receiver is then re-enabled for pulse detection and,
upon reception of the next pulse measures the elapsed
time (RX_PULSE_INTERVAL) from the previous pulse.
The value is then placed in the nearest pulse position bin
(one of 25), where pulse position 0 is at
PULSE_POSITION_0, and each subsequent position is
spaced 1 TIC from the previous one as defined in the Data
Transmit Timing section. Data symbols are therefore
variable and depend on the encoded data.
Receive Symbol Timing
Figure 25
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