peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 265
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peb2256
Manufacturer Part Number
peb2256
Description
E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB2256.pdf
(490 pages)
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XPC(3:0)
Data Sheet
010 =RMFB: Receive Multiframe Begin (Output)
011 = RSIGM: Receive Signaling Marker (Output)
100 = RSIG: Receive Signaling Data (Output)
101 = DLR: Data Link Bit Receive (Output)
110 = FREEZE: Freeze Signaling (Output)
111 = RFSP: Receive Frame Synchronous Pulse (Output)
Transmit multifunction Port Configuration
The multifunction ports XP(A to D) are bidirectional. After Reset these
ports are configured as inputs. With the selection of the pin function
the In/Output configuration is also achieved. Each of the four different
input functions (SYPX, XMFS, XSIG, TCLK) may only be selected
once. No input function must be selected twice or more. SYPX and
XMFS should not be selected in parallel. Register PC1 configures
port XPA, while PC2 → port XPB, PC3 → port XPC and PC4 → port
XPD.
0000 = SYPX: Synchronous Pulse Transmit (Input)
0001 = XMFS: Transmit Multiframe Synchronization (Input)
0010 = XSIG: Transmit Signaling Data (Input)
Marks the beginning of every received multiframe or optionally
the begin of every CAS multiframe begin (active high).
Marks the time slots which are defined by register RTR(4:1) of
every frame on port RDO.
The received CAS multiframe is transmitted on this pin. Time
slot on RSIG correlates directly to the time slot assignment on
RDO.
Marks the S
The freeze signaling status is active high by detecting a loss-of-
signal alarm, or a loss of CAS frame alignment or a receive slip
(positive or negative). It stays high for at least one complete
multiframe after the alarm disappears. Setting SIC2.FFS
enforces a high on pin FREEZE.
Marks the frame begin in the receivers synchronous state. This
marker is active low for 488 ns with a frequency of 8 kHz.
Together with register XC(1:0) SYPX defines the frame begin
on the transmit system interface ports XDI and XSIG.
Together with register XC(1:0) XMFS defines the frame and
multiframe begin on the transmit system interface ports XDI
and XSIG. Depending on PC5.CXMFS the signal on XMFS is
active high or low.
Input for transmit signaling data received from the signaling
a
-bits within the data stream on RDO.
265
FALC56 V1.2
E1 Registers
PEB 2256
2002-08-27
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