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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)： | 32/61頁 |
| 文件大?。?/td> | 589K |
| 代理商： | DM9801E |
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DM9801
1M Home Phoneline Network Physical Layer Single Chip Transceiver
32
Preliminary
Version: DM9801-DS-P02
March 20, 2000
RX_PCOM High Register - Register 22
Bit
Bit Name
22.15 –
22.0
Default
0, RW
Description
RX_PCOM_HI
RX_PCOM_HI:
The high order word of the 32-bit receive data field to be used for out-
of-band communications between PHY management entities.
A non-null receive PCOM will set the RX_PCOM_VAL bit in the ISTAT
register.
An access of the high byte of this register will clear the
RX_PCOM_VAL bit in the ISTAT register.
RX_PCOM Low Register - Register 23
Bit
Bit Name
23.15 –
23.0
Default
0, RW
Description
RX_PCOM_LO
RX_PCOM_LO:
The low order word of the 32-bit receive data field to be used for out-of-
band communications between PHY management entities.
A non-null receive PCOM will set the RX_PCOM_VAL bit in the ISTAT
register.
An access of the high byte of the RX_PCOM_HI register will clear the
RX_PCOM_VAL bit in the ISTAT register.
Peak Noise Register - Register 24
Bit
Bit Name
24.15 -
24.8
Default
0xFF, RW
Description
PEAK_LEVEL
Peak Level:
This is a measurement of the peak level of the last valid (non-collision)
AID received also, the maximum allowable value of the noise
measurement. If NOISE_LEVEL exceeds PEAK_LEVEL,
NOISE_LEVEL is reset to NOISE_FLOOR.
NOISE LEVEL:
This is the digital value of the SLICE_LVL_NOISE output. It is
effectively a measure of the noise level on the wire. When auto-
adaptation is enabled (bit 5 of the Control register is false) this register
is updated with the current noise count every 50n Secs. When
adaptation is disabled, this register can be written and is used to
generate both the SLICE_LVL_NOISE and the SLICE_LVL_DATA
signals.
24.7 -
24.0
NOISE_LEVEL
0x04, RW
Noise Control A Register - Register 25
Bit
Bit Name
25.15 -
25.8
25.7 -
25.0
Default
0x80, RW
Description
NSE_CEILING
Noise Ceiling:
The maximum value of the NOISE_LEVEL measurement.
Noise Floor:
The minimum value of the NOISE_LEVEL measurement.
NSE_FLOOR
0x07, RW
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