EMIF
Table 7-143. DDR_PHY_CTRL_1 Register Field Descriptions (continued)
Bit
Field
Type
Reset
Description
4-0
reg_read_latency
R/W
0h
This field defines the latency for read data from DDR SDRAM in
number of DDR clock cycles.
The value applied should be equal to the required value minus one.
The maximum read latency supported by the DDR PHY is equal to
CAS latency plus 7 clock cycles.
The minimum read latency must be equal to CAS latency plus 2
clock cycle.
459
SPRUH73H – October 2011 – Revised April 2013
Memory Subsystem
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