PEB2465 SIEMENS [Siemens Semiconductor Group], PEB2465 Datasheet - Page 34

• Manufacturer Part Number: PEB2465
• Description: Four Channel Codec Filter
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
3.4.4
Bit
Test-Loops
AGX
AGR
D-HPX
D-HPR
1)
2)
In this case the transmit-path signal is attenuated 0.06 dB
In this case the receive-path signal is attenuated 0.12 dB
7
CR4 Configuration Register 4
0 0 0 0:
0 0 0 1:
0 0 1 1:
0 1 0 0:
0 1 0 1:
1 0 0 0:
1 0 0 1:
1 1 0 0:
1 1 0 1:
1 1 1 1:
Analog gain in transmit direction
AGX = 0:
AGX = 1:
Analog gain in receive direction
AGR = 0:
AGR = 1:
Disable highpass in transmit direction
D-HPX = 0: transmit high pass is enabled
D-HPX = 1: transmit high pass is disabled
Disable highpass in receive direction
D-HPR = 0: receive high pass is enabled
D-HPR = 1: receive high pass is disabled
6
Test-Loops
4 bit field for selection of Analog and Digital Loop Backs
ALB-PFI
ALB-4M
ALB-PCM analog loop back via 8 kHz (PCM) is selected
ALB-8K
DLB-ANA digital loop back via analog port is selected
DLB-4M
DLB-128K digital loop back via 128 kHz is selected
DLB-64K
DLB-PCM digital loop back via PCM-registers is selected
analog gain is disabled
analog gain is enabled (6.02 dB amplification)
analog gain is disabled
analog gain is enabled (6.02 dB attenuation)
5
4
no loop back is selected (normal operation)
analog loop back via PREFI-POFI is selected
analog loop back via 4 MHz is selected
analog loop back via 8 kHz (linear) is selected
digital loop back via 4 MHz is selected
digital loop back via 64 kHz is selected
34
3
AGX
2)
1)
2
Programming the SICOFI
AGR
1
D-HPX
PEB 2465
0
D-HPR
02.97
®
-4