PEB2256H-V12 Infineon Technologies, PEB2256H-V12 Datasheet - Page 76
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PEB2256H-V12
Manufacturer Part Number
PEB2256H-V12
Description
IC INTERFACE LINE 3.3V 80-MQFP
Manufacturer
Infineon Technologies
Datasheet
1.PEB2256H-V12.pdf
(490 pages)
Specifications of PEB2256H-V12
Applications
*
Interface
*
Voltage - Supply
*
Package / Case
80-SQFP
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PEB2256H-V12
PEB2256H-V12IN
PEB2256H-V12IN
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PEB2256H-V12
Manufacturer:
Infineon Technologies
Quantity:
10 000
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4.1.14.3 S
The FALC56 supports the S
• the access through register RSW
• the access through registers RSA(8:4), capable of storing the information for a
• the access through the 64 byte deep receive FIFO of the signaling controller of HDLC
4.1.14.4 Channel Associated Signaling CAS (E1, serial mode)
The signaling information is carried in time slot 16 (TS16). The signaling controller
samples the bit stream either on the receive line side or if external signaling is enabled
on the receive system side. External signaling is enabled by selecting the RSIG pin
function in registers PC(4:1) and setting XSP.CASEN = 1.
Optionally the complete CAS multiframe can be transmitted on pin RSIG. The signaling
data is clocked with the working clock of the receive highway (SCLKR) together with the
receive synchronization pulse (SYPR). Data on RSIG is transmitted in the last 4 bits per
time slot and is aligned to the data on RDO. The first 4 bits per time slot can be optionally
fixed high or low (SIC2.SSF), except for time slot 0 and 16 (bit 1 to 4 are always "0000"
in TS16). In time slot 0 the FAS/NFAS word is transmitted, in time slot 16 the CAS
multiframe pattern "0000XYXX". Data on RSIG is only valid if the freeze signaling status
is inactive. With FMR1.SAIS an all-ones data stream can be transmitted on RDO and
RSIG.
The signaling procedure is done as it is described in ITU-T G.704 and G.732.
The main functions are:
• Synchronization to a CAS multiframe
• Detection of AIS and remote alarm in CAS multiframes
• Separation of CAS service bits X1 to X3
Updating of the received signaling information is controlled by the freeze signaling
status. The freeze signaling status is automatically activated if a loss-of-signal
(FRS0.LOS = 1), or a loss of CAS multiframe alignment (FRS1.TSL16LFA = 1) or a
receive slip occurs. The current freeze status is output on port FREEZE (RP(A:D)) and
indicated by register SIS.SFS. Optionally automatic freeze signaling can be disabled by
setting bit SIC3.DAF.
After CAS resynchronization an interrupt is generated. Because at this time the signaling
is still frozen, CAS data is not valid yet. Readout of CAS data has to be delayed until the
next CAS multiframe is received.
Data Sheet
complete multiframe
channel 1. This S
as well as HDLC frames where the signaling controller automatically processes the
HDLC protocol. Any combination of S
RFIFO is selected by XC0.SA(8:4). The access to the RFIFO is supported by
ISR0.RME/RPF.
a
-Bit Access (E1)
a
-bit access gives the opportunity to receive a transparent bit stream
a
-bit signaling of time slot 0 of every other frame as follows:
a
-bits which shall be extracted and stored in the
76
Functional Description E1
FALC56 V1.2
PEB 2256
2002-08-27
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