M42800A Atmel Corporation, M42800A Datasheet - Page 48

• Manufacturer Part Number: M42800A
• Manufacturer: Atmel Corporation

Specifications of M42800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 54
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3/5.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

11.13 EBI User Interface
48
AT91M42800A
The EBI is programmed using the registers listed in
(EBI_RCR) controls exit from Boot mode (see
trol Register (EBI_MCR) is used to program the number of active chip selects and data read
protocol. Eight Chip Select Registers (EBI_CSR0 to EBI_CSR7) are used to program the
parameters for the individual external memories. Each EBI_CSR must be programmed with a
different base address, even for unused chip selects.
The Abort Status registers indicate the access address (EBI_AASR) and the reason for the
abort (EBI_ASR).
Base Address: 0xFFE00000 (Code Label EBI_BASE)
Table 11-4.
Notes:
Offset
0x0C
0x1C
0x2C
0x00
0x04
0x08
0x10
0x14
0x18
0x20
0x24
0x28
0x30
0x34
1. 8-bit boot (if BMS is detected high)
2. 16-bit boot (if BMS is detected low)
Register
Chip Select Register 0
Chip Select Register 1
Chip Select Register 2
Chip Select Register 3
Chip Select Register 4
Chip Select Register 5
Chip Select Register 6
Chip Select Register 7
Remap Control Register
Memory Control Register
Reserved
Reserved
Abort Status Register
Address Abort Status
Register
EBI Memory Map
EBI_CSR0
EBI_CSR1
EBI_CSR2
EBI_CSR3
EBI_CSR4
EBI_CSR5
EBI_CSR6
EBI_CSR7
EBI_AASR
EBI_MCR
EBI_RCR
EBI_ASR
Name
–
–
”Boot on NCS0” on page
Table
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Write-only
Read-only
Read-only
11-4. The Remap Control Register
Access
–
–
29). The Memory Con-
0x0000201E
0x0000201D
0x10000000
0x20000000
0x30000000
0x40000000
0x50000000
0x60000000
0x70000000
Reset State
1779D–ATARM–14-Apr-06
0x0
0x0
–
0
–
–
(1)
(2)