PEF22554 datasheet(3/30 Pages) INFINEON | Quad E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications

Nombre de pieza

Descripción

PEF22554

Quad E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications ( 30 Page)

INFINEON

3 page

QuadFALC®

PEF 22554

Overview

Delta Sheet

3/30

2002-09-16

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 and Figure 2.

•

Figure 1

Single Voltage Supply

•

Figure 2

Dual Voltage Supply

F0248

DDP

DDX

DDR

SSP

SSX

SSR

DDC

VSEL

DD, VDDP, VDDX, VDDR > VDDC

must always be guaranteed,

also during power on and

power down sequences.

DDC

QuadFALC®

(can be

left open)

3.3 V

F0249

DDX

DDR

DDP

DDC

3.3 V

1.8 V

SSP

SSX

SSR

VSEL

DD, VDDP, VDDX, VDDR > VDDC

must always be guaranteed,

also during power on and

power down sequences.

DDC

QuadFALC®

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

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