PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 135

• Manufacturer Part Number: PSB2186N-V11TR
• Description: IC ISDN SUBSCRIB ACCESS 44-PLCC
• Manufacturer: Infineon Technologies

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

Operational Description
3.4.1
HDLC-Frame Reception
Assuming a normally running communication link (layer-1 activated, layer-2 link established,
TEI assigned), figure 51 illustrates the transfer of an I frame via the D channel. The transmitter
is shown on the left and the receiver on the right, with the interaction between the
microcontroller system and the ISAC-S TE in terms of interrupt and command stimuli.
When the frame (excluding the CRC field) is not longer than 32 bytes, the whole frame is
transferred in one block. The reception of the frame is reported via the Receive Message End
(RME) interrupt. The number of bytes stored in RFIFO can be read out from RBCL. The
Receive Status Register (RSTA) includes information about the frame, such as frame aborted
yes/no or CRC valid yes/no and, if complete or partial address recognition is selected, the
identification of the frame address.
Depending on the HDLC-message transfer mode, the address and control field of the frame
can be read from auxiliary registers (SAPR and RHCR), as shown in figure 52.
LAPD Link
µ
C-
µ
C-
System
System
ITD05677
: = Data Transfer *) In Auto Mode the "RR" Response will be Transmitted Autonomously
Figure 51
Transmission of an I Frame in the D Channel (Subscriber to Exchange)
Semiconductor Group
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