4.21.1. DIGI a9m2440¶
This CPU card is based on a Samsung S3C2440 CPU. The card is shipped with:
S3C2440@400 MHz or 533 MHz (ARM920T/ARMv4T)
16.9344 MHz crystal reference
SDRAM 32/64/128 MiB
- Samsung K4M563233E-EE1H (one or two devices for 32 MiB or 64 MiB)
- 2M x 32bit x 4 Banks Mobile SDRAM
- CL2@100 MHz (CAS/RAS delay 19ns)
- 105 MHz max
- column address size is 9 bits
- Row cycle time: 69ns
- Samsung K4M513233C-DG75 (one or two devices for 64 MiB or 128 MiB)
- 4M x 32bit x 4 Banks Mobile SDRAM
- CL2@100MHz (CAS/RAS delay 18ns)
- 111 MHz max
- column address size is 9 bits
- Row cycle time: 63ns
- 64ms refresh period (4k)
- 90 pin FBGA
- 32 bit data bits
- Extended temperature range (-25°C…85°C)
NAND Flash 32/64/128 MiB
- Samsung KM29U512T (NAND01GW3A0AN6)
- 64 MiB 3,3V 8-bit
- ID: 0xEC, 0x76, 0x??, 0xBD
- Samsung KM29U256T
- 32 MiB 3,3V 8-bit
- ID: 0xEC, 0x75, 0x??, 0xBD
- ST Micro
- 128 MiB 3,3V 8-bit
- ID: 0x20, 0x79
- 30ns/40ns/20ns
I2C interface, 100 KHz and 400 KHz
- Real Time Clock
- Dallas DS1337
- address 0x68
- EEPROM
- ST M24LC64
- address 0x50
- 16bit addressing
LCD interface
Touch Screen interface
Camera interface
I2S interface
AC97 Audio-CODEC interface
SD card interface
3 serial RS232 interfaces
Host and device USB interface, USB1.1 compliant
Ethernet interface
- 10Mbps, Cirrus Logic, CS8900A (on the CPU card)
SPI interface
JTAG interface
4.21.1.1. How to get the binary image¶
Configure with the default configuration:
make ARCH=arm a9m2440_defconfig
Build the binary image:
make ARCH=arm CROSS_COMPILE=armv4compiler
NOTE: replace the armv4compiler with your ARM v4 cross compiler.
