PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 274
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PEB2085
Manufacturer Part Number
PEB2085
Description
ISDN SubscribernAccess Controller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEB2085.pdf
(320 pages)
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– HDLC frame transmission.
– Programming of TEI and SAPI values.
– HDLC transceiver control.
– Interrupt handling.
– Local test loop switching.
– B-Channel switching in IOM-1 configurations.
TE configurations in IOM-1 / IOM-2 mode and NT-S configurations (IOM-1 only) are supported.
In addition to the ISAC-S standard functions supporting the ISDN basic access, the ISAC-S
contains optional, terminal specific functions. These terminal specific functions (watchdog and
external awake) are not supported by this LLC.
6.2
6.2.1
Mnemonic
ActL1_SBC
DeaL1_SBD
ArlL1_SBC
EnaClk_SBC
InitL1_SBC
ResL1_SBC
IntL1_SBC
The layer 1 related functions call DECODE_L1_STATUS to report a L1 status change to a
higher layer software.
6.2.2
Mnemonic
InitLay2_ICC
Loop_ICC
ResetHDLC_ICC
RecReady_ICC
SendFrame_ICC
StoreSAPI_ICC
StoreTEI_ICC
SwitchB_ICC
Int_ICC
Rx_ICC
Semiconductor Group
Summary of LLC Functions
Layer 1 Related Functions
HDLC Controller Related Functions
Enable clocking in power down mode.
Purpose
Layer-1 activation.
Layer 1 deactivation.
Activation of a local loop.
Layer-1 initialization and reset.
Layer-1 reset.
Handling of CISQ interrupts.
Purpose
HDLC controller initialization.
Testloop activation at the serial outputs of the IOM interface.
HDLC transceiver reset.
Setting the HDLC receiver ready or not ready.
HDLC frame transmission.
TEI programming.
B-channel switching to SSI or SLD interface in IOM1 configurations.
Handling of XPR, RSC, TIN and EXI interrupts.
Handling of RPF and RME interrupts.
SAPI programming.
274
Low Level Controller
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