MCIMX27ADSE Freescale Semiconductor, MCIMX27ADSE Datasheet - Page 20

• Manufacturer Part Number: MCIMX27ADSE
• Description: KIT APPLICATION DEV ADS I.MX27
• Manufacturer: Freescale Semiconductor
• Series: i.MXr
• Type: Microcontrollerr

Specifications of MCIMX27ADSE

• Contents: Main Board, LCD Panel, Keypad, NAND Flash Card, Image Sensor and TV Encoder Card
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: ARM9
• Silicon Core Number: I.MX2
• Silicon Family Name: I.MX27
• Supported Devices: I.MX27
• Rohs Compliant: Yes
• For Use With/related Products: i.MX27
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Configuration and Operation
2.3.2
Table 2-11 shows the memory map for the ADS. None of the peripherals take up the entire address space
of the associated chip selects. Software can access the same physical memory location at more that one
range of addresses. For instance, DDR SDRAM occupies only 128M Byte of the 256M Byte space
available to CSD0, so it appears in two different ranges of addresses.
2.3.3
Please refer to the CPLD document (Peripheral Bus Control CPLD_BONO_ADS.doc) for the details. The
document can be found in the Documentation CD inside the ADS kit.
2.3.4
The ADS has several on-board memory devices. A single Multi-chip package (MCP) U28 contains both
a 16M x 16 Burst NOR Flash and a 8M x16 Burst PSRAM (see Figure 2-2). The ADS is also equipped
with a 32M x 32 DDR SDRAM (see Figure 2-3) made up of two 32M x 16 parts (U20 and U21). A plug-in
NAND flash card with 1G bit storage capacity and a 8-bit data bus interface is also included.
2-6
DDR SDRAM
Burst FLASH
PSRAM
CPLD
External Ethernet Controller
External UART
ADS Memory Map
Peripheral Bus Control CPLD
On-Board Memory
Peripheral
i.MX27
U1
FLASH_RST_B
MCIMX27ADSE User’s Manual, Rev. A
Chip Select
Figure 2-2. Burst Flash Interface
WAIT_B
D[15:0]
CS0_B
CS1_B
A[25:0]
CS5_B
Table 2-11. ADS Memory Map
EB0_B
EB1_B
LBA_B
RW_B
BCLK
OE_B
CSD0
CS0
CS5
CS4
CS4
CS4
0xC0000000 - 0xC1FFFFFF
0xD6000000 - 0xD0FFFFFF
0xD4000000 - 0xD5FFFFFF
0xD4000000 - 0xD5FFFFFF
0xD4000000 - 0xD5FFFFFF
Vcc
0xA0000000 - 0xA7FFFFFF
Address Range (Hex)
Burst NOR FLASH
WP
FCE
FCE2
LB
HB
RDY
CLI
OE
ADV
WE
RST
A[25:0]
D[15:0]
PCE
U28
PSRAM
Memory Size (Byte)
Freescale Semiconductor
128M
32M
16M
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