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MB86R02 'Jade-D' Hardware Manual V1.64
13.6.14
IO buffer setting ODT1 (DRIBSODT1)
ODT related setting of IO buffer is set.
Address
Bit
15
14
13
Name
-
-
-
R/W
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value
X
X
X
Bit field
No.
Name
15-6
(Reserved)
5
ZSELN
4
ODTONN
3
ZSELP
2
ODTONP
1
ZSEL
0
ODTON
12
11
10
9
-
-
-
-
X
X
X
X
Reserved bits.
Write access is ignored.
This becomes ZSELN value of IO buffer, and this is ODT resistance setting for DQSN.
0
150Ω or 100Ω (initial value)
1
75Ω or 50Ω
This is ODT setting for DQS's IO, and controls ODTONN of the IO buffer.
Initial value is 0.
0
IO buffer's ODTON is always "0"
1
This should be set to use ODT of IO buffer
ODTON is set to off in the following case:
•
To adjust OCD
This becomes ZSELP value of the IO buffer, and it is ODT resistance setting of DQSP's
IO.
0
150Ω or 100Ω (initial value)
1
75Ω or 50Ω
This is ODT setting of DQS's IO, and controls ODTONP of the IO buffer.
Initial value is 0.
0
IO buffer's ODTON is always "0"
1
This should be set to use ODT of IO buffer
ODTON is set to off in the following case:
•
To adjust OCD
This is ZSEL value of the IO buffer that is ODT resistance of IO for DQ and DM.
0
150Ω or 100Ω (initial value)
1
75Ω or 50Ω
This is ODT setting of IO for DQ and DM, and controls ODTON of IO buffer.
Initial value is 0.
0
IO buffer's ODTON is always "0"
1
This should be set to use ODT of IO buffer
ODTON is set to off in the following case:
•
To adjust OCD
F300_0000
+ 64
H
H
8
7
6
5
-
-
-
ZSELN ODTONN ZSELP ODTONP ZSEL ODTON
X
X
X
0
Description
4
3
2
1
0
0
0
0
13-19
0
0
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