PSF21150 INFINEON [Infineon Technologies AG], PSF21150 Datasheet - Page 127

• Manufacturer Part Number: PSF21150
• Description: IPAC-X ISDN PC ADAPTER CIRCUIT
• Manufacturer: INFINEON [Infineon Technologies AG]

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.
Figure 70
Data Sheet
CIC Interrupt Structure
TRAN
MASK
WOV
MOS
ICD
ICA
ICB
CIC
ST
Interrupt
TRAN
ISTA
WOV
MOS
ICD
ICA
ICB
CIC
ST
127
CI1E
CIX1
Description of Functional Blocks
CIC0
CIC1
CIR0
PSB 21150
PSF 21150
2000-07-21