EMIF
7.3.6.7
DDR PHY Data Macro 0 Write Leveling Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_WRLVL_INIT_MODE_0)
The DDR PHY Data Macro 0 Write Leveling Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_WRLVL_INIT_MODE_0) is shown in the figure and table below..
Figure 7-134. DDR PHY Data Macro 0 Write Leveling Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_WRLVL_INIT_MODE_0)
31
16
Reserved
R-0
15
1
0
Reserved
WRLVL_INIT_MODE_S
EL
R-0
W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-157. DDR PHY Data Macro 0 Write Leveling Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_WRLVL_INIT_MODE_0)
Bit
Field
Value
Description
31-1
Reserved
0
Reserved
0
WRLVL_INIT_MO
The user programmable init ratio selection mode for Write Leveling FSM.
DE_SEL
0
Selects a starting ratio value based on Write Leveling of previous data slice.
1
Selects a starting ratio value based in register DATA0/1_REG_PHY_WRLVL_INIT_RATIO_0 value
programmed by the user.
7.3.6.8
DDR PHY Data Macro 0 DQS Gate Training Init Ratio Register
(DATA0_REG_PHY_GATELVL_INIT_RATIO_0)
The DDR PHY Data Macro 0 DQS Gate Training Init Ratio Register
(DATA0_REG_PHY_GATELVL_INIT_RATIO_0) is shown in the figure and table below.
Figure 7-135. DDR PHY Data Macro 0 DQS Gate Training Init Ratio Register
(DATA0_REG_PHY_GATELVL_INIT_RATIO_0)
31
20
19
16
Reserved
Reserved
R-0
R-0
15
10
9
0
Reserved
GATELVL_INIT_RATIO_CS0
R-0
W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-158. DDR PHY Data Macro 0 DQS Gate Training Init Ratio Register
(DATA0_REG_PHY_GATELVL_INIT_RATIO_0) Field Descriptions
Bit
Field
Value
Description
31-20
Reserved
Reserved
19-10
Reserved
0h
Reserved
9-0
GATELVL_INIT_RATIO_CS0
0h
The user programmable init ratio used by DQS Gate Training FSM when
DATA0/1/_REG_PHY_GATELVL_INIT_MODE_0 register value set to 1.
472
Memory Subsystem
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated