IPAC-X datasheet(37/270 Pages) INFINEON

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IPAC-X

PSB/PSF 21150

Description of Functional Blocks

Data Sheet

2003-01-30

Header 40H: Non-interleaved A-D-A-D Sequences

The non-interleaved A-D-A-D sequence gives direct read/write access to the complete

address range and can have any length. In this mode SDX and SDR can be connected

together allowing data transmission on one line.

Example for a read/write access with header 40H:

Header 48H: Interleaved A-D-A-D Sequences

The interleaved A-D-A-D sequence gives direct read/write access to the complete

address range and can have any length. This mode allows a time optimized access to

the registers by interleaving the data on SDX and SDR (SDR and SDX must not be

connected together).

Example for a read/write access with header 48H:

Header 43H: Read-/Write- only A-D-D-D Sequence (Constant Address)

This mode can be used for a fast access to the HDLC FIFO data. Any address (rdadr,

wradr) in the range 00H-1FH and 6AH/7AH gives access to the current FIFO location

selected by an internal pointer which is automatically incremented with every data byte

following the first address byte. The sequence can have any length and is terminated by

the rising edge of CS.

Example for a write access with header 43H:

Example for a read access with header 43H:

SDR

header wradr

wrdata

rdadr

wradr

wrdata

SDX

rddata

rdata

SDR

header wradr

wrdata

rdadr

wradr

wrdata

SDX

rddata rddata

SDR

header wradr

wrdata

(wradr)

wrdata

(wradr)

wrdata

(wradr)

wrdata

(wradr)

wrdata

(wradr)

wrdata

(wradr)

wrdata

(wradr)

SDX

SDR

header

rdadr

SDX

rddata

(rdadr)

rddata

(rdadr)

rddata

(rdadr)

rddata

(rdadr)

rddata

(rdadr)

rddata

(rdadr)

rddata

(rdadr)

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