peb4266 Infineon Technologies Corporation, peb4266 Datasheet - Page 13

• Manufacturer Part Number: peb4266
• Description: Subscriber Line Interface Circuit Enhanced Power Management
• Manufacturer: Infineon Technologies Corporation

2
The SLIC-P supports AC and DC control loops based on feeding a voltage
transversal line current
In receive direction DC and AC voltages are handled separately with different gains on the PEB 4266. Both are
applied differentially via pins DCP and DCN or ACP and ACN, respectively.
The line voltages
active modes ACTH with
V
V
and in ringing mode ACTR with
V
V
The transversal line voltage
V
= 30
= 60
A reversed polarity of
In transmit direction the transversal and longitudinal currents are measured and scaled images are provided at the
IT and IL pin, respectively.
I
I
For off-hook detection, in PDRH or PDRR mode 5 k
to VBATH or VBATR, respectively.
The currents through these resistors,
I
Preliminary Data Sheet
IT
Trans
IT0
T
R
T
R
TR
= (
=
=
=
=
= (
=
V
V
V
V
= (
I
V
T
I
TIP
TIP
RING
RING
(
(
T0
TIP
V
V
+
I
T
DCP
DCP
=
=
+
I
+
–
R
=
=
V
V
I
)/100 =
I
R0
V
Functional Description
M
M
–
–
V
V
R
RING
)/2
)/10 =
M
M
– 30
– 60
V
V
DCN
DCN
– 30
– 60
V
=
R
I
) + 6
) + 6
Trans
V
and
I
TRANS0
(
(
ab
V
V
V
I
(
(
TR
DCN
DCN
V
V
/50
Trans
=
V
V
DCP
DCP
is easily obtained by changing the sign of (
T
M
(
(
V
V
/5
are the amplified input voltages, related to the mean supply voltage
–
–
V
and the longitudinal current
=
ACP
ACP
–
–
TR
V
V
V
CMS
CMS
V
V
V
BATH
=
–
–
CMS
CMS
M
V
) – 6
) – 6
V
V
=
T
/2 and ACTL with
) – 6
) – 6
ACN
ACN
V
–
I
T0
BATR
V
) for modes ACTL, ACTH
) for mode ACTR
and
R
(
(
V
V
thus is simply related to the input voltages:
/2,
(
(
ACN
V
ACN
V
I
ACP
ACP
R0
, are sensed, scaled and provided at the IT pin (see
–
–
–
–
V
V
CMS
V
CMS
V
CMS
CMS
resistors are connected from TIP to BGND and from RING
V
)
)
13
M
),
)
I
I
I
Long
IL
Long
=
= (
V
BATL
(Figure
= (
I
T
I
–
/2, the line voltages are given by
T
I
–
R
)/200 =
I
V
R
5).
DCP
)/2
–
V
I
Long
DCN
V
/100
).
TR
to the line and sensing the
Revision 5.0, 2006-10-09
Functional Description
V
M
=
PEB 4266
Figure
V
BI
SLIC-P
/2. In the
4):