PEF2256EV22NP Lantiq, PEF2256EV22NP Datasheet - Page 41

• 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

Table 4
Pin or
Ball No.
5 (C1)
Data Sheet
Name
XL2
XDON
XFM
Pin Definitions - Line Interface (cont’d)
Pin
Type
O
O
O
Buffer
Type
analog Transmit Line 2
digital
digital
Function
Analog output to the external transformer.
Selected if LIM1.DRS = 0
pin is in high-impedance state until bit
FMR0.XC1 = 1
More details about tristate modes are shown
in
Transmit Data Output Negative
This digital output for transmitted dual-rail
PCM(-) route signals can provide
•
•
The data is clocked with positive transitions of
XCLK in both cases. Output polarity is
selected by bit LIM0.XDOS (active low by
default). The dual-rail mode is selected if
LIM1.DRS = 1
reset this pin is in high-impedance state until
register LIM1.DRS = 1
Transmit Frame Marker
This digital output marks the first bit of every
frame transmitted on port XDOP. This
function is only available in the optical
interface mode (LIM1.DRS = 1
FMR0.XC1 = 0
transitions of XCLK. After reset this pin is in
high-impedance state until register
LIM1.DRS = 1
Note: In remote loop configuration the XFM
41
Table 55/Table
half bauded signals with 50% duty cycle
(LIM0.XFB = 0
full bauded signals with 100% duty cycle
(LIM0.XFB = 1
marker is not valid.
B
B
B
B
and FMR0.XC1 = 1
and XPM2.XLT = 0
). Data is clocked on positive
and XPM2.XLT = 0
B
B
62.
) or
)
B
and XPM2.XLT = 0
B
. After reset this
Rev. 1.1, 2005-06-13
External Signals
PEF 2256 H/E
B
and
FALC
B
B
B
.
. After
.
®
56
B
.