PEF 82912 F V1.4 Infineon Technologies, PEF 82912 F V1.4 Datasheet - Page 63

• Manufacturer Part Number: PEF 82912 F V1.4
• Description: IC MODULAR ISDN NT INTELL TQFP64
• Manufacturer: Infineon Technologies
• Series: Q-SMINT®r

Specifications of PEF 82912 F V1.4

• Function: Second Generation Modular
• Interface: ISDN
• Mounting Type: Surface Mount
• Package / Case: 64-LFTQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Power (watts): -
• Operating Temperature: -
• Number Of Circuits: -
• Other names: PEF82912FV1.4XT; PEF82912FV14XP; SP000007558; SP000007559

Receiver
The receiver of the S-transceiver is symmetrical. 10 k
recommended in each receive path. It is preferable to split the resistance into two
resistors for each line. This allows to place a high resistance between the transformer
and the diode protection circuit (required to pass 96 kHz input impedance test of
ITU I.430 [8] and ETS 300012-1). The remaining resistance (1.8 k ) protects the S-
transceiver itself from input current peaks.
•
Figure 28
3.3.4
Figure 29
•
Figure 29
Data Sheet
SR1
SR2
illustrates the recommended oscillator circuit.
Oscillator Circuitry
External Circuitry S-Interface Receiver
Crystal Oscillator
1k8
1k8
C
C
15.36 MHz
LD
LD
V
DD
55
GND
XOUT
XIN
8k2
8k2
Operational Description
overall resistance are
PEF 80912/80913
extcirc_S.vsd
DC Point
2 : 1
2001-03-29