pef82902 Infineon Technologies Corporation, pef82902 Datasheet - Page 34

• Manufacturer Part Number: pef82902
• Description: 4b3t Second Generation Modular Isdn Nt Intelligent Extended
• Manufacturer: Infineon Technologies Corporation

together allowing data transmission on one line.
Example for a read/write access with header 40
Header 48
The interleaved A-D-A-D sequences give direct read/write access to the address range
00
registers by interleaving the data on SDX and SDR.
Example for a read/write access with header 48
Header 43
This mode (header 43
address (rdadr, wradr) in the range between 00
location selected by an internal pointer which is automatically incremented with every
data byte following the first address byte. Generally, it can be used for any register
access to the address range 00
terminated by the rising edge of CS.
Example for a write access with header 43
Example for a read access with header 43
Header 41
This sequence (header 41
interleaved A-D-A-D read access. This mode is useful for reading status information
before writing to the HDLC XFIFO. Generally, it can be used for any register access to
Data Sheet
SDR
SDR
SDR
SDR
SDX
SDX
SDX
SDX
H
-7F
H
header
header
header
header
and can have any length. This mode allows a time optimized access to the
H
H
H
: Interleaved A-D-A-D Sequences
: Read-/Write- only A-D-D-D Sequence
: Non-interleaved A-D-D-D Sequence
wradr
wradr
wradr
rdadr
H
) can be used for a fast access to the HDLC FIFO data. Any
wrdata
wrdata
wrdata
rddata
(wradr)
(rdadr)
H
) allows in front of the A-D-D-D write access a non-
H
wrdata
rddata
(wradr)
rdadr
rdadr
(rdadr)
-7D
H
. The sequence can have any length and is
H
wrdata
rddata
rddata
rddata
20
H
(wradr)
(rdadr)
rdadr
:
:
H
H
H
-1F
:
:
wrdata
rddata
rddata
wradr
(wradr)
(rdadr)
rdadr
H
gives access to the current FIFO
wrdata
wrdata
rddata
rddata
(wradr)
(rdadr)
Functional Description
wrdata
rddata
wradr
(wradr)
(rdadr)
PEF 81902
wrdata
wrdata
rddata
(wradr)
(rdadr)
2001-11-12