PEF4265TV21XT Lantiq, PEF4265TV21XT Datasheet - Page 16

• Manufacturer Part Number: PEF4265TV21XT
• Manufacturer: Lantiq

Specifications of PEF4265TV21XT

• Polarity Reversal: Yes
• On-chip Ring Relay Driver: No
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Pin Count: 22
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

2.1
SLIC-E V2.1 operates in the following modes controlled by ternary logic signals at C1, C2 and a binary signal at
C3 (PEF 4265 only)
Table 3
C1
1) No ‘Overtemp’ signaling possible via pin C1 if C1 is low.
2) Register setting (VINETIC
3) Not connected in dual-channel version PEF 4365
4) Register setting (VINETIC
Table 4
Mode
PDH
PDRH
PDRHL
ACTL
ACTH
ACTH-R
ACTR
HIRT
HIT
HIR
Power Down High Impedance (PDH)
PDH offers high impedance at TIP and RING; it can be used for testing purposes or when an error condition
occurs. In PDH mode all functions are switched off. Off-hook detection is not available.
Power Down Resistive High (PDRH)
Power consumption is reduced to a minimum by switching completely off all voice transmission functions. To allow
off-hook detection, PDRH provides a connection of 5 k
respectively, while the output buffers show high impedance (see
sensed, scaled by 1/5 and transferred to the IT pin for off-hook supervision.
Power Down Resistive High Load (PDRHL)
PDRHL is used as a transition state from Power Down to Active modes (automatically initiated during a mode
change). It causes fast preloading of CEXT in order to suppress line voltage transients.
Preliminary Data Sheet
L
M
H
1)
Operating Modes
SLIC-E Mode Table
SLIC-E Modes and Supplies
L
PDH
HIRT
ACTL
HIRT
ACTH-R
Mode Description
Power Down High Impedance
Power Down Resistive High
Power Down Resistive High Load
Active Low
Active High
Active High Resistive
Active Ring
High Impedance on RING and TIP
High Impedance on TIP
High Impedance on RING
®
®
): SEL-SLIC = (0001)hex
): SEL-SLIC = (0100)hex
M
PDRHL
ACTH
HIT
C2
H
PDRH
ACTR
HIR
16
each from TIP to BGND and RING to VBATH,
Figure
Internal Supply Voltages
VBATH, VH switch open
VBATH, VH switch open
VBATH, VH switch open
VBATL, BGND
VBATH, BGND
VBATH, BGND
VBATH, VHR
VBATH, VHR
VBATH, VHR
VBATH, VHR
L or N.C.
H
L or N.C.
H
L or N.C.
H
4)
4)
4)
6). The current through these resistors is
2)
2)
2)
PEF 4265 / PEF 4365
Revision 2.0, 2006-10-10
Functional Description
C3
SLIC-E / TSLIC-E
3)
V
BI
,
V
HI