PEF22554 INFINEON [Infineon Technologies AG], PEF22554 Datasheet - Page 3

• Manufacturer Part Number: PEF22554
• Description: Quad E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications
• Manufacturer: INFINEON [Infineon Technologies AG]

supply being generated internally using an on-chip voltage regulator. In order to
minimize power consumption, it is also possible to operate the device using separate
external 3.3 V and 1.8 V supplies. Please note that the 1.8 V supply requires de-coupling
whether generated on-chip or externally. Supply voltage selection is done by using pin
VSEL. See
•
Figure 1
•
Figure 2
Delta Sheet
V
must always be guaranteed,
also during power on and
power down sequences.
V
must always be guaranteed,
also during power on and
power down sequences.
DD
DD
, V
, V
DDP
DDP
, V
, V
Figure 1
DDX
DDX
Single Voltage Supply
Dual Voltage Supply
, V
, V
DDR
DDR
and
> V
> V
1.8 V
Figure
DDC
DDC
2.
3.3 V
3.3 V
3/30
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
DD
DDX
DDR
DDP
DDC
DDC
SS
SSP
SSX
SSR
QuadFALC
DDP
DDC
DDC
DD
DDX
DDR
SS
SSP
SSX
SSR
QuadFALC
VSEL
VSEL
®
®
(can be
left open)
3.3 V
QuadFALC
PEF 22554
2002-09-16
Overview
F0249
F0248
®