OM11014 NXP Semiconductors, OM11014 Datasheet - Page 18

• Manufacturer Part Number: OM11014
• Description: BOARD EVAL FOR LPC2919
• Manufacturer: NXP Semiconductors
• Series: Keilr
• Type: MCUr

Specifications of OM11014

• Contents: Board, Cable, CD
• For Use With/related Products: LPC2919
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 568-4360

NXP Semiconductors
LPC2917_19_1
Product data sheet
8.2.2 Description
The SMC simultaneously supports up to eight independently configurable memory banks.
Each memory bank can be 8 bits, 16 bits or 32 bits wide and is capable of supporting
SRAM, ROM, burst-ROM memory or external I/O devices.
A separate chip select output is available for each bank. The chip select lines are
configurable to be active HIGH or LOW. Memory-bank selection is controlled by memory
addressing.
memory base addresses, chip selects and bank internal addresses.
Table 10.
Table 11.
32-bit
system
address bit
field
31 to 29
28 to 26
25 and 24
23 to 0
CS[2:0]
000
001
010
011
100
101
110
111
•
•
•
•
•
•
•
•
•
•
Asynchronous page-mode read operation in non-clocked memory subsystems
Asynchronous burst-mode read access to burst-mode ROM devices
Independent configuration for up to eight banks, each up to 16 MB
Programmable bus-turnaround (idle) cycles (one to 16)
Programmable read and write wait states (up to 32), for static RAM devices
Programmable initial and subsequent burst-read wait state for burst-ROM devices
Programmable write protection
Programmable burst-mode operation
Programmable external data width: 8 bits, 16 bits or 32 bits
Programmable read-byte lane enable control
External memory-bank address bit description
External static-memory controller banks
Table 10
Symbol
BA[2:0]
CS[2:0]
-
A[23:0]
Bank
bank 0
bank 1
bank 2
bank 3
bank 4
bank 5
bank 6
bank 7
shows how the 32-bit system address is mapped to the external bus
Rev. 01 — 31 July 2008
Description
external static-memory base address (three most significant bits);
the base address can be found in the memory map; see
field contains ‘010’ when addressing an external memory bank.
chip select address space for eight memory banks; see
always ‘00’; other values are ‘mirrors’ of the 16 MB bank address
16 MB memory banks address space
ARM9 microcontroller with CAN and LIN
LPC2917/19
© NXP B.V. 2008. All rights reserved.
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