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Struck Documentation
SIS8300-KU
MTCA.4 Digitizer
Page 27 of 92
7.3 Memory buffer
The structure of the memory buffer with
2 GByte
(i.e. 4 x 4 GBit memory chips) is illustrated
below.
0 x 00 0000
0 x 00 0002
0 x FF FFFE
Memory 256-bit
Block Addresses
0 x 100 0000
0 x 100 0002
0 x 100 0004
0 x 3FF FFFE
..
..
2 GByte : 4 x 256M x 16bit = 1024M x 16bit = 512M x 32bit = 256M x 64bit = 128M x 128bit = 64M x 256bit
0 x 000 0000
0 x 000 0001
0 x 000 0007
Memory 64-bit
Addresses
0 x FFF FFFF
0 x FFF FFF9
0 x FFF FFF8
(4 x 256-bit Address)
0 x 0000 0000
0 x 400 0000
0 x 400 0001
0 x 400 0007
Memory 32-bit
Addresses
(8 x 256-bit Address)
Memory 16-bit
Addresses
(16 x 256-bit Address)
Memory 8-bit (byte)
Addresses
(32 x 256-bit Address)
0 x 1FFF FFFF
0 x 1FFF FFFE
0 x 1FFF FFF1
0 x 1FFF FFF0
..
0 x 000 000F
0 x 000 000E
0 x 000 0001
0 x 000 0000
..
..
..
..
0 x 3FFF FFFF
0 x 0000 0001
0 x 0000 001F
0 x 0000 001E
0 x 0000 0000
0 x 7FFF FFFF
0 x 3FFF FFFE
0 x 3FFF FFE1
0 x 3FFF FFE0
..
0 x 7FFF FFFE
0 x 7FFF FFC1
0 x 7FFF FFC0
0 x 0000 0001
0 x 0000 003E
0 x 0000 003F
..
..
..
..
..
0 x 800 0002
0 x 800 0003
..
0 x 1000 0007
0 x 1000 0006
0 x 2000 000E
0 x 2000 000F
..
..
..
..
“Block Addresses” are defined as 256-bit addresses and they are used to program the Sample
Start Address (see Memory Sample Start Block Address register) and the Sample Length (see
Sample Block Length register).
Note again:
the data width has changed from 256 bit to 512 bit with the SIS8300-KU and
therefore only even “Block addresses” and even “Block length” values are
valid.