
PSD4000 Series
Preliminary Information
30
The
PSD4000
Functional
Blocks
(cont.)
9.1.5 Memory ID Registers
The 8-bit read only memory status registers are included in the CSIOP space. The user
can determine the memory configuration of the PSD device by reading the Memory ID0
and Memory ID1 registers. The content of the registers are defined as follow:
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
S_size 3
S_size 2
S_size 1
S_size 0
F_size 3
F_size 2
F_size 1
F_size 0
Memory_ID0 Register
Main Flash Size
(Bit)
none
256K
512K
1M
2M
4M
8M
F_size3
0
0
0
0
0
0
0
F_size2
0
0
0
0
1
1
1
F_size1
0
0
1
1
0
0
1
F_size0
0
1
0
1
0
1
0
Bit Definition
SRAM Size
(Bit)
none
16K
32K
64K
S_size3
0
0
0
0
S_size2
0
0
0
0
S_size1
0
0
1
1
S_size0
0
1
0
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
*
*
B_type 1
B_type 0
B_size 3
B_size 2
B_size 1
B_size 0
Memory_ID1 Register
*
Not used bit should be set to zero.
Boot Block Size
(Bit)
none
128K
256K
512K
B_size3
0
0
0
0
B_size2
0
0
0
0
B_size1
0
0
1
1
B_size0
0
1
0
1
Bit Definition
B_type1
0
0
B_type0
0
1
Boot Block Type
Flash
EEPROM