PNX1500E NXP Semiconductors, PNX1500E Datasheet - Page 335
PNX1500E
Manufacturer Part Number
PNX1500E
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1500E.pdf
(828 pages)
Specifications of PNX1500E
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5. Register Descriptions
PNX15XX_PNX952X_SER_N_4
Product data sheet
Figure 15:
Figure 16:
command
command
address
address
clk_n
clk_n
bank
bank
Trcd_rd
Trcd_wr
dqs
dqs
clk
clk
dq
dq
Timing Parameter
4.6 Trcd_rd Timing Parameter
4.7 Trcd_wr Timing Parameter
Timing Parameter
Trcd_wr = 2
Trcd_wr = 2
Act
Act
n
n
Figure 15
Figure 16
The DDR SDRAM Controller contains a number of MMIO registers that are used to:
•
•
•
•
Trcd_rd = 4
set generic control and read generic status information
set dimensions of the DDR memories
set timing characteristics of the DDR memories
set arbitration parameters
Write
n
shows a Trcd_rd of 4 cycles.
shows a Trcd_wr of 2 cycles.3.2 Asynchronous Reset Synchronization
Rev. 4.0 — 03 December 2007
Read
n
Tcas = 2.5
PNX15xx/952x Series
Chapter 9: DDR Controller
© NXP B.V. 2007. All rights reserved.
9-335
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