PEF2256EV22NP Lantiq, PEF2256EV22NP Datasheet - Page 112

• 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

•
This S
frames where the signaling controller automatically processes the HDLC protocol. Any
combination of S
selected by XC0.SA(8:4).
6.4.7.4
In external signaling mode (serial mode) the signaling data received on port XSIG is
sampled with the working clock of the transmit system interface (SCLKX) in combination
with the transmit synchronization pulse (SYPX). Data on XSIG is latched in the bit
positions 5 to 8 per time slot, bits 1 to 4 are ignored. Time slots 0 and 16 are sampled
completely (bit 1 to 8). The received CAS multiframe is inserted frame aligned into the
data stream on XDI and must be valid during the last frame of a multiframe if
CRC4/multiframe mode is selected. The CAS multiframe is aligned to the
CRC4-multiframe; other frames are ignored. Data sourced by the internal signaling
controller (µP access mode) overwrites the external signaling data.
If the FALC
the FALC
Note: CAS data on XSIG is read in the last frame of a multiframe only and ignored in all
Figure 30
Data Sheet
The access through the 64 byte deep XFIFO of the signaling controller (HDLC
channel 1 only)
SYPX
SCLKX
XDI
XSIG
other frames.
a
-bit access gives the opportunity to transparent a bit stream as well as HDLC
®
56 undisturbedly.
Channel Associated Signaling CAS (E1, serial mode)
®
56 is configured for no signaling, the system interface data stream passes
T
FAS
NFAS
ABCD
0000XYXX
4 5 6 7
A B C D
2.048 MHz Transmit Signaling Highway (E1)
TS31
T
a
-bits which shall be inserted in the outgoing data stream can be
FAS/NFAS
FAS/NFAS
TS0
= Time slot offset (XC0, XC1)
= Frame alignment signal, is taken from XSIG, not from XDI
= TS0 not containing FAS
= Signaling bits for time slots 1...15 and 17...31 of CAS multiframe
= CAS multiframe alignment signal, has to be provided in TS16
0 1 2 3 4 5 6 7
TS1
A B C D
125 µs
112
0 1 2 3 4 5 6 7
0 0 0 0 X Y X X
TS16
Functional Description E1
Rev. 1.1, 2005-06-13
0 1 2 3 4 5 6 7
PEF 2256 H/E
TS31
A B C D
FALC
F0132
®
56