PNX1502E/G,557 NXP Semiconductors, PNX1502E/G,557 Datasheet - Page 328
PNX1502E/G,557
Manufacturer Part Number
PNX1502E/G,557
Description
IC MEDIA PROC 300MHZ 456-BGA
Manufacturer
NXP Semiconductors
Specifications of PNX1502E/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Interface
I²C, 2-Wire Serial
Number Of I /o
61
Voltage - Supply
1.23 V ~ 1.37 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
456-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Program Memory Type
-
Ram Size
-
Lead Free Status / Rohs Status
Compliant
Other names
568-1298
935277748557
PNX1502E/G
935277748557
PNX1502E/G
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PNX15XX_SER_3
Product data sheet
Figure 7:
Unhalting/warm start done
DDR SDRAM Controller Start and Halt State Machine
Halting done
MMIO halt
2.5.4 Observing Halt Mode
Initialization done
Unhalting
MMIO warm start
Halting
to be turned on before the MTL memory request is presented to the DDR controller).
This mode adds extra latency for requests to be served and should therefore be used
adequately.
state
When the DDR SDRAM Controller entered halt mode due to an auto halt, it will only
unhalt when a MTL memory request is presented to one of its input ports. To ensure
the DDR controller can detect these MTL memory requests, the DDR controller clock
inputs need to be turned on during auto-halt (or at least turned on before the MTL
memory request is presented to the DDR controller). Therefore it is advised not to
turn off the clock to the DDR controller when “ip_2031_auto_halted“ is ‘1’ since this is
a dynamic mode controlled by the DDR controller not software.
The DDR SDRAM Controller is in halt mode if the HALT_STATUS bit in the MMIO
register IP_2031_CTL is set to ‘1’. The clock, clk_mem and clk_mmio must be turned
on to execute the MMIO read.
state
state
Halt
Rev. 3 — 17 March 2006
Initialization
Running
Reset
state
state
state
MMIO start
“ip_2031_auto_halted = 1”
Hard reset
MMIO auto halt
Unhalting
Halting
state
state
Halt
state
Halting done
Unhalting done
MMIO unhalt
& valid MTL command
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Chapter 9: DDR Controller
PNX15xx Series
“ip_2031_halted = 1”
9-15
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