PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 154

• Manufacturer Part Number: PEB3265
• Description: (PEB326x / PEB426x) Dual Channel Slicofi-2 / Slic Duslic
• Manufacturer: Infineon Technologies Corporation

DuSLIC
Interfaces
Preliminary
Active (ACTL, ACTH): These are the regular transmit and receive modes for voice
band. The line driving section is operated between
V
,
V
and
V
.
BATL
BATH
BGND
Active Ring (ACTR): In order to provide a balanced ring signal of up to 45 Vrms or to
V
drive longer telephone lines, an auxiliary positive battery voltage
is used, making
HR
possible a higher voltage across the line. Transmission performance remains
unchanged compared with Active modes.
The Power Down mode PDRH is intended to reduce the power consumption of the
linecard to a minimum: the SLIC-S/-S2 is switched off completely, no operation is
available except off-hook detection.
With respect to the output impedance of TIP and RING, two Power Down modes have
to be distinguished:
V
V
PDRH provides a connection of 5 k
each from TIP to
and RING to
,
BGND
BATH
respectively, while the outputs of the buffers show high impedance. The current through
these resistors is sensed and transferred to the IT pin to allow off-hook supervision.
PDRHL is used as a transition state at a mode change from PDRH or PDH to ACTH
mode (automatically initiated by SLICOFI-2S/-2S2 at a mode change).
High Impedance (HIR/HIT): In this mode each of the line outputs can be programmed
to show high impedance. HIT switches off the TIP buffer, while the current through the
RING output still can be measured by IT or IL. Programming HIR switches off the RING
buffer.
Data Sheet
154
2000-07-14