PEB2466 SIEMENS [Siemens Semiconductor Group], PEB2466 Datasheet - Page 34

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

Semiconductor Group
3.3.3
COT/R
IDR
LM
LMR
V+T
1)
Bit 7
Explanation of the level metering function:
A signal fed to A/ -Law compression via AX- and HPX-filters (from a digital loop, or externally via VIN), is
rectified, and the power is measured. If the power exceeds a certain value, loaded to XR7, bit LMR is set to
‘1’. The power of the incoming signal can be adjusted by AX-filters.
CR2 Configuration Register 2
Selection of Cut off Transmit/Receive Paths
0 0 0:
0 0 1:
0 1 0:
1 0 1:
1 1 0:
Initialize Data RAM
IDR = 0:
IDR = 1:
Level Metering function
LM = 0:
LM = 1:
Result of Level Metering function (this bit can not be written)
LMR = 0: Level detected was lower than the reference
LMR = 1: Level detected was higher than the reference
Add Voice signal and Tone Generator signal
V+T = 0:
V+T = 1:
COT/R
Normal Operation
COT16
COT8
COR4M
COR64
Normal operation is selected
Contents of Data RAM is set to 0
(used for production test purposes)
Level metering function is disabled
Level metering function is enabled
Voice or Tone Generator is fed to the DAC
Voice and Tone Generator Signals are added, and fed to
the Digital to Analog Converter
Cut Off Transmit Path at 16 kHz (input of TH-Filter)
Cut Off Transmit Path at 8 kHz (input of
compression, output is zero for -law, 1 LSB for
A-law)
Cut Off Receive Path at 4 MHz (POFI-output)
Cut Off Receive Path at 64 kHz (IM-filter input)
1)
0
34
IDR
Programming the SICOFI
LM
LMR
PEB 2466
0
V+T
®
-4- C
02.97