EMIF
7.3.6.9
DDR PHY Data Macro 0/1 DQS Gate Training Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_GATELVL_INIT_MODE_0)
The DDR PHY Data Macro 0/1 DQS Gate Training Init Mode Ratio Selection
Register(DATA0/1_REG_PHY_GATELVL_INIT_MODE_0) is shown in the figure and table below.
Figure 7-136. DDR PHY Data Macro 0/1 DQS Gate Training Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_GATELVL_INIT_MODE_0)
31
16
Reserved
R-0
15
1
0
Reserved
GATELVL _INIT _MODE_SEL
R-0
W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-159. DDR PHY Data Macro 0/1 DQS Gate Training Init Mode Ratio Selection Register
(DATA0/1_REG_PHY_GATELVL_INIT_MODE_0) Field Descriptions
Bit
Field
Value
Description
31-1
Reserved
0
Reserved
0
GATELVL_INIT_MODE_SEL
User programmable init ratio selection mode for DQS Gate Training FSM.
0
Selects a starting ratio value based on Write Leveling of the same data slice.
1
selects a starting ratio value based on
DATA0/1_REG_PHY_GATELVL_INIT_RATIO_0 value programmed by the user.
7.3.6.10 DDR PHY Data Macro 0/1 DQS Gate Slave Ratio Register
(DATA0/1_REG_PHY_FIFO_WE_SLAVE_RATIO_0)
The DDR PHY Data Macro 0/1 DQS Gate Slave Ratio Register
(DATA0/1_REG_PHY_FIFO_WE_SLAVE_RATIO_0) is shown in the figure and table below.
Figure 7-137. DDR PHY Data Macro 0/1 DQS Gate Slave Ratio
Register(DATA0/1_REG_PHY_FIFO_WE_SLAVE_RATIO_0)
31
20
19
16
Reserved
Reserved
R-0
R-0
15
10
9
0
Reserved
FIFO_WE_SLAVE_RATIO_CS0
R-0
W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-160. DDR PHY Data Macro 0/1 DQS Gate Slave Ratio Register
(DATA0/1_REG_PHY_FIFO_WE_SLAVE_RATIO_0) Field Descriptions
Bit
Field
Value
Description
31-20
Reserved
0
Reserved
19-10
Reserved
0h
Reserved
9-0
RD_DQS_GATE _SLAVE_RATIO_CS0
0h
Ratio value for fifo we for CS0.
473
SPRUH73H – October 2011 – Revised April 2013
Memory Subsystem
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