psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 34

• Manufacturer Part Number: psb21391
• Description: Siemens Codec With Upn Transceiver
• Manufacturer: Infineon Technologies Corporation

Data Sheet
Header 48
The interleaved A-D-A-D sequences give direct read/write access to the address range
00
have any length. This mode allows a time optimized access to the registers by
interleaving the data on SDX and SDR.
Example for a read/write access with header 48
Header 4A
The A-D-D-D sequences give a fast read-/write-only access to the address range 00
6F
The starting address (wradr, rdadr) is incremented automatically after every data byte.
The sequence can have any length and is terminated by the rising edge of CS.
Example for a write access with header 4A
Example for a read access with header 4A
SDR
SDR
SDR
SDX
SDX
SDX
H
H
-6F
(header 4A
H
header
header
header
(header 48
H
H
, 4C
, 4E
H
H
H
) or the CRAM range 80
: Interleaved A-D-A-D Sequences
: Read-/Write-only A-D-D-D Sequences (Address Auto increment)
wradr
wradr
rdadr
H
) or the CRAM range 80
wrdata
wrdata
rddata
(wradr)
(rdadr)
(wradr+1)
(rdadr+1)
wrdata
rddata
rdadr
H
-FF
(wradr+2)
H
(rdadr+2)
24
wrdata
H
rddata
rddata
rdadr
or 4E
or 4E
H
H
-FF
H
(header 4E
or 4C
H
H
H
(wradr+3)
(rdadr+3)
wrdata
:
rddata
rddata
:
wradr
(header 4C
H
:
H
(wradr+4)
(rdadr+4)
wrdata
wrdata
rddata
) respectively.
H
) respectively and can
(wradr+5)
(rdadr+5)
wrdata
rddata
PSB 21391
PSB 21393
(wradr+6)
Interfaces
(rdadr+6)
wrdata
rddata
2001-03-07
H
-