PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 63
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PSB2186N-V11TR
Manufacturer Part Number
PSB2186N-V11TR
Description
IC ISDN SUBSCRIB ACCESS 44-PLCC
Manufacturer
Infineon Technologies
Datasheet
1.PSB2186N-V11TR.pdf
(240 pages)
Specifications of PSB2186N-V11TR
Controller Type
Subscriber Access Controller (ISDN)
Interface
4-Wire SPI Serial
Voltage - Supply
4.75 V ~ 5.25 V
Current - Supply
17mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Other names
PSB2186N-V11INTR
PSB2186N-V11TR
PSB2186N-V11TR
- Current page: 63 of 240
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2.7
LAPD, layer 2 of the D-channel protocol (CCITT I.441) includes functions for:
– Provision of one or more data link connections on a D channel (multiple LAP).
– HDLC framing
– Application of a balanced class of procedure in point-multipoint configuration.
The simplified block diagram in figure 30 shows the functional blocks of the ISAC-S TE which
support the LAPD protocol.
Figure 30
D-Channel Processing of the ISAC
For the support of LAPD the ISAC-S TE contains an HDLC transceiver which is responsible
for flag generation/recognition, bit stuffing mechanism, CRC check and address recognition.
A powerful FIFO structure with two 64-byte pools for transmit and receive directions and an
intelligent FIFO controller permit flexible transfer of protocol data units to and from the C
system.
Semiconductor Group
Discrimination between the data link connections is performed by means of a data link
connection identifier (DLCI = SAPI + TEI)
Layer 1
Layer
Upper
Layers
2
Layer-2 Functions for the ISDN-Basic Access
2 x 32 byte
Receiver
R-FIFO
HDLC
µ
Transmitter
2 x 32 byte
µC-System
P-Interface
X-FIFO
HDLC
Command
Controller
Registers
Controller
®
Status
LAPD
FIFO
-S TE
63
IOM
R
Functional Description
Functions
Layer-1
S(D-Channel)
ITS00861
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