PEB2466 SIEMENS [Siemens Semiconductor Group], PEB2466 Datasheet - Page 50

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PEB2466

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

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Semiconductor Group
3.6
The C-SICOFI-4 signaling interface is made up of 2 input pins (SIx_0, SIx_1), two
output pins (SOx_0, SOx_1) and three bi-directional programmable pins (SBx_0, SBx_1,
SBx_2) per channel.
Additional two interrupt pins (INT12, INT34) are provided. If one of the input pins for
channel 1 or 2, or one of the bi-directional pins for channel 1 and 2 (if programmed as
inputs) changes, and being stable for the debounce time specified in Register XR4,
INT12 will go from ‘0’ to ‘1’. This interrupt is cleared if the appropriate registers (XR0,
XR1 and XR3) are read via the serial
functionality for channel 3 and 4.
For special purposes two additional output signals are provided by the PEB 2466.
CHCLK1 (see also register XR4) will provide a programmable time period of 2 to 28 ms.
CHCLK2 will provide 3 different frequencies (256 kHz, 512 kHz or 16384 kHz). Both
signals are only available if a valid signal is applied to the MCLK-pin.
3.6.1
Figure 14
The Signaling Interface
Operating Modes
50
C-interface. Pin INT34 provides the same
Programming the SICOFI
PEB 2466
®
-4- C
02.97

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