3.4.65 DDR3PHY Data Byte General Status
Register 1
Name:
DDR3PHY_DXxGSR1
Offset:
0x01C8 + x*0x40 [x=0..1]
Reset:
0x00000000
Property:
Read/Write
Bit
31
30
29
28
27
26
25
24
Access
Reset
Bit
23
22
21
20
19
18
17
16
RVPASS[1:0]
RVIERR
Access
R/W
R/W
R/W
Reset
0
0
0
Bit
15
14
13
12
11
10
9
8
RVERR
Access
R/W
Reset
0
Bit
7
6
5
4
3
2
1
0
DQSDFT[1:0]
DFTERR
Access
R/W
R/W
R/W
Reset
0
0
0
Bits 21:20 – RVPASS[1:0] Read Valid Training Pass Count
The number of passing configurations
during read valid training.
Bit 16 – RVIERR Read Valid Training Intermittent Error
If set, indicates that there was an
intermittent error during read valid training of the byte, such as a pass was followed by a
fail then followed by another pass.
Bit 12 – RVERR Read Valid Training Error
If set, indicates that a valid read
valid placement could not be found during read valid training of the
byte.
Bits 5:4 – DQSDFT[1:0] DQS
Drift
Used to report the drift on the
read data strobe of the data byte.
Value
Description
0
No
drift
1
90°
drift
2
180°
drift
3
270° drift or
more
Bit 0 – DFTERR DQS Drift Error
If set, indicates that the byte read
data strobe has drifted by more than or equal to the drift limit set in
DDR3PHY_PGCR.
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