EM6AB160
EtronTech
Addressing Mode Select Field (A3)
•
The Addressing Mode can be one of two modes, either Interleave Mode or Sequential Mode. Both Sequential
Mode and Interleave Mode support burst length of 2, 4 and 8.
Table 6. Addressing Mode
A3
0
Addressing Mode
Sequential
1
Interleave
Burst Definition, Addressing Sequence of Sequential and Interleave Mode
Table 7. Burst Address ordering
Start Address
•
Burst Length
Sequential
Interleave
A2
X
X
X
X
X
X
0
A1
X
X
0
0
1
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0, 1
1, 0
0, 1, 2, 3
1, 2, 3, 0
2, 3, 0, 1
3, 0, 1, 2
0, 1
1, 0
0, 1, 2, 3
1, 0, 3, 2
2, 3, 0, 1
3, 2, 1, 0
2
4
8
1
0
0, 1, 2, 3, 4, 5, 6, 7
1, 2, 3, 4, 5, 6, 7, 0
2, 3, 4, 5, 6, 7, 0, 1
3, 4, 5, 6, 7, 0, 1, 2
4, 5, 6, 7, 0, 1, 2, 3
5, 6, 7, 0, 1, 2, 3, 4
6, 7, 0, 1, 2, 3, 4, 5
7, 0, 1, 2, 3, 4, 5, 6
0, 1, 2, 3, 4, 5, 6, 7
1, 0, 3, 2, 5, 4, 7, 6
2, 3, 0, 1, 6, 7, 4, 5
3, 2, 1, 0, 7, 6, 5, 4
4, 5, 6, 7, 0, 1, 2, 3
5, 4, 7, 6, 1, 0, 3, 2
6, 7, 4, 5, 2, 3, 0, 1
7, 6, 5, 4, 3, 2, 1, 0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
CAS Latency Field (A6~A4)
•
This field specifies the number of clock cycles from the assertion of the Read command to the first read data. The
minimum whole value of CAS Latency depends on the frequency of CK. The minimum whole value satisfying the
following formula must be programmed into this field.
tCAC(min) ≤ CAS Latency X tCK
Table 8. CAS Latency
A6
0
A5
0
A4
0
CAS Latency
Reserved
Reserved
2 clocks
0
0
1
0
1
0
0
1
1
3 clocks
1
0
0
Reserved
Reserved
2.5 clocks
Reserved
1
0
1
1
1
0
1
1
1
Test Mode field (A8~A7)
•
These two bits are used to enter the test mode and must be programmed to "00" in normal operation.
Table 9. Test Mode
A8
0
A7
0
Test Mode
Normal mode
DLL Reset
1
0
Rev.1.3
8
Jun. /2015
ETRON [ ETRON TECHNOLOGY, INC. ]
