PEF2256EV22NP Lantiq, PEF2256EV22NP Datasheet - Page 437

• Manufacturer Part Number: PEF2256EV22NP
• Manufacturer: Lantiq

Specifications of PEF2256EV22NP

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Version Status Register (Read)
VSTR
VN(7:0)
Decision between Version 2.1 or Version 2.2 is done by different WID register bits.
Receive Equalizer Status (Read)
RES
EV(1:0)
RES(4:0)
Data Sheet
VN7
EV1
7
7
Version Number of Chip
05
Equalizer Status Valid
These bits informs the user about the current state of the receive
equalization network.
00 = Equalizer status not valid, still adapting
01 = Equalizer status valid
10 = Equalizer status not valid
11 = Equalizer status valid but high noise floor
Receive Equalizer Status
The current line attenuation status in steps of about 1.4 dB are
displayed in these bits. Only valid if bits EV(1:0) = 01.
Accuracy: ± 2 digits, based on temperature influence and noise
amplitude variations.
00000 = Minimum attenuation: 0 dB
...
11001 = Maximum attenuation: -36 dB
EV0
H
=Version 2.1 and version 2.2
RES4
437
RES3
RES2
RES1
Rev. 1.1, 2005-06-13
T1/J1 Registers
PEF 2256 H/E
RES0
VN0
0
0
FALC
(4A)
(4B)
®
56