PEB2466 SIEMENS [Siemens Semiconductor Group], PEB2466 Datasheet - Page 55

• Manufacturer Part Number: PEB2466
• Description: Four Channel Codec Filter with PCM- and m-Controller Interface SICOFI4-mC
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

HPR and HPX enabled;
AR
1.57 Vrms which corresponds to the overload point of 2.223 V.
When the gain in the receive path is set at 0 dB, an 1014 Hz PCM sinewave input with
a level 0 dBm0 will correspond to a voltage of 1.095 Vrms at the analog output.
When the gain in the transmit path is set at 0 dB, an 1014 Hz sine wave signal with a
voltage of 1.095Vrms A-Law will correspond to a level of 0 dBm0 at the PCM output.
In transmit direction for -law an additional gain of 1.94 dB is implemented automatically,
in the companding block (CMP). This additional gain has to be considered at all gain
calculations, and reduces possible AX-gain from 9 dB (with A-Law) to 7 dB (with -Law)
A 0 dBm0
1.57 Vrms which corresponds to the overload point of 2.223 V.
When the gain in the receive path is set at 0 dB, an 1014 Hz PCM sinewave input with
a level 0 dBm0 will correspond to a voltage of 1.0906 Vrms at the analog output.
When the gain in the transmit path is set at 0 dB, an 1014 Hz sine wave signal with a
voltage of 1.0906 Vrms will correspond to a level of 1.94 dBm0 at the PCM output.
4
The figures in this specification are based on the subscriber-line board requirements.
The proper adjustment of the programmable filters (transhybrid balancing, impedance
matching, frequency-response correction) requires a complete knowledge of the
characteristics are guaranteed within the test conditions.
Test Conditions
T
R
AX
f
AGX = 0 dB, 6.02 dB, AGR = 0 dB, – 6.02dB;
A-Law
A 0 dBm0 signal is equivalent to 1.095 Vrms. A + 3.14 dBm0 signal is equivalent to
1)
2)
3)
4)
Semiconductor Group
C-SICOFI-4’s analog environment. Unless otherwise stated, the transmission
= 1014 Hz; 0 dBm0; A-Law or -Law;
-Law
A
L
1)
R
Consider, in a complete system, AR = AR1 + AR2 + FRR + R1
Consider, in a complete system, AX = AX1 + AX2 + FRX
The absolute power level in decibels referred to (a point of zero relative level) the PCM interface levels.
= 0 °C to 70 °C;
3)
2)
L
> 300 ;
= 0 to 9 dB for A-Law, 0 to 7 dB for -Law
,
= 0 to – 9 dB
C
L
forms the load on VOUT
Transmission Characteristics
4)
signal is equivalent to 1.0906 Vrms. A + 3.17 dBm0 signal is equivalent to
C
L
< 50 pF; H(IM) = H(TH) = 0; H(R1) = H(FRX) = H(FRR) = 1;
V
DD
= 5 V
5%; GNDA1..4 = GNDD = 0 V
55
Transmission Characteristics
PEB 2466
02.97