PEB2254H-V14 Infineon Technologies, PEB2254H-V14 Datasheet - Page 42

• Manufacturer Part Number: PEB2254H-V14
• Manufacturer: Infineon Technologies

Specifications of PEB2254H-V14

• Operating Supply Voltage (typ): 5V
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Transmit Line Interface
The analog transmitter transforms the unipolar bit stream to ternary (alternate bipolar)
return to zero signals of the appropriate programmable shape. The unipolar data is
provided by the digital transmitter.
Figure 15
Transmitter Configuration
Recommended Transmitter Configuration Values
Parameter
R
t
Similar to the receive line interface three different data types are supported:
• Ternary Signal
• Dual rail data PCM(+), PCM(–) at multifunction ports XDOP/ XDON with 50 % or
• Unipolar data at port XOID will be transmitted either in NRZ (Non Return to Zero) with
The analog transmitter includes a programmable pulse shaper to satisfy the
requirements of ITU-T I.431. The amplitude of pulse shaper is programmable via the
microprocessor interface to allow a maximum of different pulse templates.
The transmitter requires an external step up transformer to drive the line.
Semiconductor Group
2
1
:
Single rail data is converted into a ternary signal which is output on pins XL1 and XL2.
The HDB3 and AMI line code is employed. Selected by FMR0.XC1/0 and
LIM1.DRS = 0.
100 % duty cycle and with programmable polarity. Line coding is done in the same
way as in the ternary interface. Selected by FMR0.XC1/0 and LIM1.DRS = 1.
100 % duty cycle or in CMI (Code Mark Inversion or known as 1T2B) Code with or
without (FMR3.CMI) preprocessed HDB3 coding to a fibre optical interface. Clocking
off data is done with the rising edge of the transmit clock XCLK (2048 kHz) and with
a programmable polarity. Selection is done by FMR0.XC1 = 0 and LIM1.DRS = 1.
( 2.5 %) [ ]
t
1
General Functions and Device Architecture E1
42
120
18
1 : 2
Characteristic Impedance [ ]
75
18
1 : 2
PEB 2254
11.96