Two/Four Channel Codec Filter for
Terminal Applications
SICOFI®-2/4-TE
Delta Sheet for the Version 1.4
PSB 2132
PSB 2134
1
Interrupt Handling
If all the inputs assigned to channel-pair-1,2 (or 3,4) have been stable for two samples
(i.e. for at least the debounce time), an interrupt on INT12 (or INT34) is generated. The
status information will be read into the XR-registers with the rising edge of INT12 (or
INT34). The status information of the assigned channel-pair-1,2 (or 3,4) will be updated
after the next interrupt INT12 (or INT34) has occurred. The interrupt INT12 (or INT34) of
assigned channel-pair-1,2 (or 3,4) is cleared, if the registers XR0-XR3 are read via a
XOP command.
• The signaling inputs (SIx_x and SBx_x, if programmed as inputs) are sampled after
the debounce time (refer to XR4)
• INT12 is assigned to and affected by the signaling inputs of channel-pair-1,2
• INT34 is assigned to and affected by the signaling inputs of channel-pair-3,4
Semiconductor Group
3
1998-04-01