PEF2256EV22NP Lantiq, PEF2256EV22NP Datasheet - Page 110

• 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

transformer indicated by a highly increased transmit line current (more than 120 mA for
at least 3 consecutive pulses sourced by V
by setting the transmit line driver XL1/2 into high-impedance state automatically (if
enabled by XPM2.DAXLT = 0). The current limiter checks the actual current value of
XL1/2 and if the transmit line current drops below the detection limit the high-impedance
state is cleared.
Two conditions are detected by the monitor: transmit line de-jitteredity (more than 31
consecutive zeros) indicated by FRS1.XLO and transmit line high current indicated by
FRS1.XLS. In both cases a transmit line monitor status change interrupt is provided.
Figure 29
6.4.7
Similar to the receive signaling controller the same signaling methods and the same time
slot assignment is provided. The FALC
methods.
6.4.7.1
The transmit signaling controller of the FALC
generation, zero-bit stuffing and programmable idle code generation. Buffering of
transmit data is done in the 64 byte deep XFIFO. The signaling information is internally
multiplexed with the data applied to port XDI or XSIG.
In signaling controller transparent mode, fully transparent data transmission without
HDLC framing is performed. Optionally the FALC
transmission of the XFIFO contents.
1)
Data Sheet
shorts between XL1 or XL2 and V
Transmit Signaling Controller (E1)
HDLC or LAPD Access
Transmit Line Monitor Configuration (E1)
DDX
XL1
XL2
are not detected
®
56 performs the following signaling and data link
110
Monitor
Line
DDX
TRI
1)
®
56 performs the flag generation, CRC
) and protects the device from damage
®
Shaper
56 supports the continuous
Pulse
Functional Description E1
XDATA
ITS10936
Rev. 1.1, 2005-06-13
PEF 2256 H/E
FALC
®
56