PEB2465 SIEMENS [Siemens Semiconductor Group], PEB2465 Datasheet - Page 39
PEB2465
Manufacturer Part Number
PEB2465
Description
Four Channel Codec Filter
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEB2465.pdf
(88 pages)
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PEB 2465
®
Programming the SICOFI
-4
SLICs with Multiplexed Loop/Ground Key Detect
Figure 10
SICOFI-4 pins LGKM0,[1] are detector select outputs. These command output pins are
normally set to logical ‘0’, such that the SLIC outputs loop status, which is passed to XR1
- bits 0 and 4 via indication pins SI1_0 and SI2_0.
Every T milliseconds, the detector select outputs change to logical ‘1’ for a time of 125 s
(Period FSC). During this time the ground key status is read from the SLIC and
transferred upstream using XR1 - bits 1 and 5 via indication pins SIx_0 and SIy_0.
The time interval T is programmable from 1 ms to 14 ms in 1 ms steps. It is possible to
program the output to be permanently logical ‘0’ or ‘1’.
Semiconductor Group
39
02.97