LH79524_LH79525_N NXP Semiconductors, LH79524_LH79525_N Datasheet - Page 21
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LH79524_LH79525_N
Manufacturer Part Number
LH79524_LH79525_N
Description
The LH79524/LH79525, powered by an ARM720T,is a complete System-on-Chip with a high level of integrationto satisfy a wide range of requirements andapplications
Manufacturer
NXP Semiconductors
Datasheet
1.LH79524_LH79525_N.pdf
(64 pages)
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System-on-Chip
External Memory Controller
provides a glueless interface to external SDRAM, Low
Power SDRAM, Flash, SRAM, ROM, and burst ROM.
Three remap options for the physical memory are
selectable by software, as shown in Figure 5 through
Figure 8.
chip selects for synchronous memory, and either two
(LH79525) or four (LH79524) static memory chip selects
are available. The static interface also includes two
(LH79525) or four (LH79524) byte lane enable signals.
Preliminary data sheet
An integrated External Memory Controller (EMC)
The EMC supports six banks of external memory. Two
0xFFFFFFFF
0xFFFC0000
0xFFFF1000
0xFFFF0000
0xA0000000
0x80000000
0x60000000
0x40000000
0x20000000
0x00000000
Figure 5. Memory Remap ‘00’
ADVANCED HIGH-PERFORMANCE BUS
ADVANCED PERIPHERAL BUS
EXTERNAL STATIC MEMORY
EXTERNAL SRAM nCS1
16KB INTERNAL SRAM
EXTERNAL SDRAM
PERIPHERALS
PERIPHERALS
REMAP = 00
RESERVED
RESERVED
BOOT ROM
NXP Semiconductors
Rev. 01 — 16 July 2007
LH79525-15
0xFFFFFFFF
0xFFFFFFFF
0xFFFC0000
0xFFFC0000
0xFFFF1000
0xFFFF0000
0xFFFF1000
0xFFFF0000
0xA0000000
0xA0000000
0x80000000
0x60000000
0x40000000
0x20000000
0x00000000
0x80000000
0x60000000
0x40000000
0x20000000
0x00000000
Figure 6. Memory Remap ‘01’
Figure 7. Memory Remap ‘10’
ADVANCED HIGH-PERFORMANCE BUS
ADVANCED HIGH-PERFORMANCE BUS
ADVANCED PERIPHERAL BUS
ADVANCED PERIPHERAL BUS
EXTERNAL STATIC MEMORY
EXTERNAL STATIC MEMORY
EXTERNAL SDRAM nDCS0
16KB INTERNAL SRAM
16KB INTERNAL SRAM
EXTERNAL SDRAM
EXTERNAL SDRAM
INTERNAL SRAM
PERIPHERALS
PERIPHERALS
PERIPHERALS
PERIPHERALS
REMAP = 01
REMAP = 10
RESERVED
RESERVED
BOOT ROM
RESERVED
RESERVED
BOOT ROM
LH79524/LH79525
LH79525-16
LH79525-17
21
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