PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 197
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: 197 of 240
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6.3
6.3.1
The Structure ’ISAC’
As the various routines in the LLC require facilities to store information about the device they
control, the global variabel ’pt’ of the type ’ISAC’ has been introduced. The type ’ISAC’ is a
structure containing imperative information elements. These information elements are listed
below:.
Status Information
pt_op_mode
pt_state
pt_ModulMode
I/O buffer related elements
These elements are used when the HDLC data is transmitted or received. In both the transmit
and receive directions additional RAM is required to store data on an intermediate basis. This
buffer will be referred to as the data frame. Related information is stored in the following
elements:
Transmit buffer pointers
pt_tx_start
pt_tx_curr
Receive buffer pointers
pt_rx_start
pt_rx_curr
Data byte counters
pt_tx_cnt
pt_rx_cnt
The following elements are used to store the type of frame:
pt_rx_frame
pt_tx_frame
Semiconductor Group
LLC-Code Elements
Structures
pointer to the starting point of the data frame for transmission
pointer to the present byte to be sent
pointer to the starting point of the receive data frame.
pointer to the next free position in the receive buffer.
number of bytes yet to be transmitted
number of bytes currently received
type of received frame.
type of transmitted frame.
operating mode of the ISAC-S TE HDLC controller (auto-mode, non-
auto mode…)
Flags of 'pt_state' indicate the various device states.
hardware configuration (TE or NT-S)
197
Low Level Controller
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