Z32AN00NW200SG Zilog, Z32AN00NW200SG Datasheet - Page 32

• Manufacturer Part Number: Z32AN00NW200SG
• Description: IC ARM922T MCU 200MHZ 256-BGA
• Manufacturer: Zilog
• Series: Encore!® 32r

Specifications of Z32AN00NW200SG

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, IrDA, SmartCard, SPI, UART/USART, USB OTG
• Peripherals: DMA, LCD, Magnetic Card Reader, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• For Use With: 269-4713 - KIT DEV ENCORE 32 SERIES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: 269-4717

Z32AN Series Data Sheet
5.6
5.6.1
5.6.2
DS0200-003
Internal ROM and Boot Program
After reset, the ARM CPU begins executing code out of the internal ROM at address 0h.
After reset, boot code will search both the primary secondary busses for a valid image. It searches for a
fixed constant at a specific memory location to determine if a valid image exists on that memory bus and
chip select
To facilitate initial programming and code updates, boot code is also capable of downloading an application
using one of the UARTs. It checks GPIO[0] at startup. If ‘1’, it searches for an application to download using
one of the UARTs.
The External Control Block contains:
Boot locations
External Memory Image Format
Application Start



Offset
1Ch
0Ch
18h
14h
10h
08h
04h
00h
Memory bus width in MEMC_CFG0. The location of byte 0 appears at the same location in
both 8-bit and 16-bit wide memories.
Fixed constant with the value of D3C2B1A0h. This is used to check that a valid boot image
exists in this external memory.
MEMC and PMU register values. These are loaded into their corresponding registers by the
boot code. This is to allow for optimal memory access time for the remainder of the load
process.
...
...
Application Code
External Control
Application Info
User defined
Block (ECB)
Contents
Application Length
Application Start
MEMC_GCFG
MEMC_TIM0
MEMC_CFG0
D3C2B1A0h
00000000h
00000000h
00000000h
00000000h
Code
Comments
Program to be executed
The space between the application info and application
code can be any user defined data
Length of the application
First non-zero word above the ECB
Reserved
Reserved
Reserved
Reserved
Fixed constant for quick checking of the image
Register value loaded by Boot ROM into MEMC
Register value loaded by Boot ROM into MEMC
Register value loaded by Boot ROM into MEMC
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