peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 88

• Manufacturer Part Number: peb20954
• Description: Smart Integrated Digital Echo Canceller Sidec
• Manufacturer: Infineon Technologies Corporation

Preliminary Data Sheet
SGMOD1
SPTP [6:0]
TSGRPP[7:0] (Addr.: 3AH): Test signal generator for receive path pattern,
Reset value = 55H
SGMOD0
RPTP[6:0]
The sign of the test sequence is determined by the following table. The amplitude is
given by TSGSPP[6:0] and TSGRPP[6;0]. Hence, rectified test signals are generated
(see Figure 38).
Table 21
Figure 38
MOD0
SGMOD1
TSGRPP[6:0]
SG
0
0
1
1
respectively
TSGSPP[6:0]
TP[6]
Settings of SGMOD1 and SGMOD0 of register TSGSPP and TSGRPP,
Explanation of Test Pattern Generation (random sign signal)
RP
SGMOD0
TEDEL
operation mode1 for signal generator (see Table 21)
Send path test pattern amplitude, log, A-/µ-Law encoded
operation mode 0 for signal generator (see Table 21)
receive path test pattern amplitude, log, A-/µ-Law encoded
0
1
0
1
TP[5]
RP
Test Signal Sign changes
according to:
2105 Hz
2105 Hz inverted
2010 Hz
random sequence
TP[4]
RP
88
TP[3]
RP
TP[2]
RP
Register Description
TP[1]
RP
time
PEB 20954
PEF 20954
TP[0]
RP
04.99
time