PSB21150 Datasheet, PDF (127/272 Pages) Infineon Technologies AG – IPAC-X ISDN PC ADAPTER CIRCUIT

PSB 21150
PSF 21150
Description of Functional Blocks
The CIR0 is buffered with a FIFO size of two. If a second code change occurs in the
received C/I channel 0 before the first one has been read, immediately after reading of
CIR0 a new interrupt will be generated and the new code will be stored in CIR0. If several
consecutive codes are detected, only the first and the last code is obtained at the first
and second register read, respectively.
For CIR1 no FIFO is available. The actual code of the received C/I channel 1 is always
stored in CIR1.
MASK
ICA
ICB
ST
CIC
WOV
TRAN
MOS
ICD
ISTA
ICA
ICB
ST
CIC
WOV
TRAN
MOS
ICD
CI1E
CIX1
CIC0
CIC1
CIR0
Figure 70
Interrupt
CIC Interrupt Structure
Data Sheet
127
2000-07-21