BeagleBone 硬件性能测试(2) ---- 上电初体验

chenzhufly

BeagleBone 硬件性能测试(2) ---- 上电初体验 [复制链接]

玲珑MM好给力！说今天能拿到板子就一定能拿到，中午的时候快递公司就把BeagleBone送到了我的手上，上个点把玩一下吧。明天就要出门旅游了，哈哈

启动信息如下：

U-Boot SPL 2011.09-00000-gf63b270-dirty (Nov 14 2011 - 10:37:14)

Texas Instruments Revision detection unimplemented

No AC power, disabling frequency switch

OMAP SD/MMC: 0

reading u-boot.img

U-Boot 2011.09-00000-gf63b270-dirty (Nov 14 2011 - 10:37:14)

I2C: ready

DRAM: 256 MiB

No daughter card present

NAND: HW ECC Hamming Code selected

nand_get_flash_type: unknown NAND device: Manufacturer ID: 0x10, Chip ID: 0x10

No NAND device found!!!

0 MiB

MMC: OMAP SD/MMC: 0

*** Warning - readenv() failed, using default environment

Net: cpsw

Hit any key to stop autoboot: 0

SD/MMC found on device 0

reading uEnv.txt

33 bytes read

Loaded environment from uEnv.txt

Importing environment from mmc ...

reading uImage

3031456 bytes read

## Booting kernel from Legacy Image at 80007fc0 ...

Image Name: Angstrom/3.1/beaglebone

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 3031392 Bytes = 2.9 MiB

Load Address: 80008000

Entry Point: 80008000

Verifying Checksum ... OK

XIP Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

[ 0.067560] omap_l3_smx omap_l3_smx.0: couldn't find resource

[ 0.244350] _omap_mux_get_by_name: Could not find signal leds-gpio

[ 0.313839] omap2_set_init_voltage: unable to get clk dpll1_ck

[ 0.319996] omap2_set_init_voltage: unable to set vdd_mpu_iva

[ 0.326141] omap2_set_init_voltage: unable to get clk l3_ick

[ 0.332141] omap2_set_init_voltage: unable to set vdd_core

systemd-fsck[61]: Angstrom-Cloud9-: clean, 27400/874496 files, 774461/3494137 blocks

[ 14.579399] /usr/sbin/crond[91]: (CRON) INFO (Syslog will be used instead of sendmail.): No such file or directory

[ 16.118728]

[ 16.118738] CPSW phy found : id is : 0x7c0f1

[ 16.125685] PHY 0:01 not found

.---O---.

| | .-. o o

| | |-----.-----.-----.| | .----..-----.-----.

| | | __ | ---'| '--.| .-'| | |

| | | | | |--- || --'| | | ' | | | |

'---'---'--'--'--. |-----''----''--' '-----'-'-'-'

-' |

'---'

The Angstrom Distribution beaglebone ttyO0

Angstrom v2011.10-core - Kernel 3.1.0+

beaglebone login:

输入root，进入系统后也点个灯玩玩吧：

点亮usr1，不要点usr0哈，usr0已经被linux系统用作系统心跳了。

root@beaglebone:~# echo 1 > /sys/class/leds/beaglebone::usr1/brightness

关闭usr1

root@beaglebone:~# echo 0 > /sys/class/leds/beaglebone::usr1/brightness

使用交叉网线连接BeagleBone板子和PC机：

设置板子IP：

root@beaglebone:~# ifconfig eth0 192.168.1.100

root@beaglebone:~# ping 192.168.1.124

PING 192.168.1.124 (192.168.1.124) 56(84) bytes of data.

64 bytes from 192.168.1.124: icmp_req=1 ttl=64 time=2.20 ms

64 bytes from 192.168.1.124: icmp_req=2 ttl=64 time=0.394 ms

64 bytes from 192.168.1.124: icmp_req=3 ttl=64 time=0.267 ms

64 bytes from 192.168.1.124: icmp_req=4 ttl=64 time=0.369 ms

另外一张卡的启动信息，有些不一样耶，加入了启动的时间打印

//---------------------------------------------------------------------------------------------------------------------------

U-Boot SPL 2011.09 (Nov 04 2011 - 21:43:12)

Texas Instruments Revision detection unimplemented

No AC power, disabling frequency switch

OMAP SD/MMC: 0

reading u-boot.img

U-Boot 2011.09 (Nov 04 2011 - 21:39:19)

I2C: ready

DRAM: 256 MiB

WARNING: Caches not enabled

No daughter card present

NAND: HW ECC Hamming Code selected

nand_get_flash_type: unknown NAND device: Manufacturer ID: 0x10, Chip ID: 0x10

No NAND device found!!!

0 MiB

MMC: OMAP SD/MMC: 0

*** Warning - readenv() failed, using default environment

Net: cpsw

Hit any key to stop autoboot: 0

SD/MMC found on device 0

reading uEnv.txt

** Unable to read "uEnv.txt" from mmc 0:1 **

reading uImage

2870524 bytes read

## Booting kernel from Legacy Image at 82000000 ...

Image Name: Arago/3.0+3.1-rc8-psp04.06.00.02

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 2870460 Bytes = 2.7 MiB

Load Address: 80008000

Entry Point: 80008000

Verifying Checksum ... OK

Loading Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

[ 0.000000] Linux version 3.1.0-rc8 (jenkins@sdit-build01) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #1 Sun Oct 30 06:40:25 CDT 2011

[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f

[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

[ 0.000000] Machine: am335xevm

[ 0.000000] Memory policy: ECC disabled, Data cache writeback

[ 0.000000] AM335X ES1.0 (neon )

[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024

[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait ip=dhcp

[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)

[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)

[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)

[ 0.000000] Memory: 256MB = 256MB total

[ 0.000000] Memory: 253928k/253928k available, 8216k reserved, 0K highmem

[ 0.000000] Virtual kernel memory layout:

[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)

[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

[ 0.000000] DMA : 0xffa00000 - 0xffe00000 ( 4 MB)

[ 0.000000] vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)

[ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)

[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)

[ 0.000000] .text : 0xc0008000 - 0xc051e000 (5208 kB)

[ 0.000000] .init : 0xc051e000 - 0xc0554000 ( 216 kB)

[ 0.000000] .data : 0xc0554000 - 0xc059e200 ( 297 kB)

[ 0.000000] .bss : 0xc059e224 - 0xc05ca200 ( 176 kB)

[ 0.000000] NR_IRQS:396

[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts

[ 0.000000] Total of 128 interrupts on 1 active controller

[ 0.000000] OMAP clockevent source: GPTIMER1 at 24000000 Hz

[ 0.000000] OMAP clocksource: GPTIMER2 at 24000000 Hz

[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms

[ 0.000000] Console: colour dummy device 80x30

[ 0.000242] Calibrating delay loop... 498.89 BogoMIPS (lpj=2494464)

[ 0.058626] pid_max: default: 32768 minimum: 301

[ 0.058790] Security Framework initialized

[ 0.058869] Mount-cache hash table entries: 512

[ 0.059322] CPU: Testing write buffer coherency: ok

[ 0.064048] print_constraints: dummy:

[ 0.064322] NET: Registered protocol family 16

[ 0.064526] GPMC revision 6.0

[ 0.065667] OMAP GPIO hardware version 0.1

[ 0.066626] omap_l3_smx omap_l3_smx.0: couldn't find resource

[ 0.066741] omap_mux_init: Add partition: #1: core, flags: 0

[ 0.069308] platform omap_i2c.1: alias fck already exists

[ 0.070031] platform omap2_mcspi.1: alias fck already exists

[ 0.070147] platform omap2_mcspi.2: alias fck already exists

[ 0.078962] bio: create slab <bio-0> at 0

[ 0.079999] SCSI subsystem initialized

[ 0.080924] usbcore: registered new interface driver usbfs

[ 0.081070] usbcore: registered new interface driver hub

[ 0.081234] usbcore: registered new device driver usb

[ 0.081593] registerd cppi-dma Intr @ IRQ 17

[ 0.081611] Cppi41 Init Done Qmgr-base(d083a000) dma-base(d0838000)

[ 0.081625] Cppi41 Init Done

[ 0.098701] omap_i2c omap_i2c.1: bus 1 rev4.0 at 100 kHz

[ 0.099578] Advanced Linux Sound Architecture Driver Version 1.0.24.

[ 0.100155] Bluetooth: Core ver 2.16

[ 0.100244] NET: Registered protocol family 31

[ 0.100260] Bluetooth: HCI device and connection manager initialized

[ 0.100281] Bluetooth: HCI socket layer initialized

[ 0.100296] Bluetooth: L2CAP socket layer initialized

[ 0.100329] Bluetooth: SCO socket layer initialized

[ 0.100530] Switching to clocksource gp timer

[ 0.108703] Switched to NOHz mode on CPU #0

[ 0.109486] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)

[ 0.109661] musb-hdrc musb-hdrc.0: dma type: dma-cppi41

[ 0.110731] musb-hdrc musb-hdrc.0: USB OTG mode controller at d080a000 using DMA, IRQ 18

[ 0.111000] musb-hdrc musb-hdrc.1: dma type: dma-cppi41

[ 0.111954] musb-hdrc musb-hdrc.1: USB OTG mode controller at d080c800 using DMA, IRQ 19

[ 0.112320] NET: Registered protocol family 2

[ 0.112544] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)

[ 0.112906] TCP established hash table entries: 8192 (order: 4, 65536 bytes)

[ 0.113131] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)

[ 0.113267] TCP: Hash tables configured (established 8192 bind 8192)

[ 0.113285] TCP reno registered

[ 0.113302] UDP hash table entries: 256 (order: 0, 4096 bytes)

[ 0.113334] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

[ 0.113572] NET: Registered protocol family 1

[ 0.113923] RPC: Registered named UNIX socket transport module.

[ 0.113940] RPC: Registered udp transport module.

[ 0.113953] RPC: Registered tcp transport module.

[ 0.113966] RPC: Registered tcp NFSv4.1 backchannel transport module.

[ 0.114236] NetWinder Floating Point Emulator V0.97 (double precision)

[ 0.114319] omap_init_opp_table: no hwmod or odev for iva, [8] cannot add OPPs.

[ 0.125674] VFS: Disk quotas dquot_6.5.2

[ 0.125759] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)

[ 0.126461] JFFS2 version 2.2. (NAND) (SUMMARY) 漏 2001-2006 Red Hat, Inc.

[ 0.126844] msgmni has been set to 495

[ 0.127767] io scheduler noop registered

[ 0.127785] io scheduler deadline registered

[ 0.127872] io scheduler cfq registered (default)

[ 0.128531] Could not set LED4 to fully on

[ 0.129716] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled

[ 0.131029] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0

[ 0.668125] console [ttyO0] enabled

[ 0.672198] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1

[ 0.679876] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2

[ 0.687594] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3

[ 0.695322] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4

[ 0.703015] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5

[ 0.717459] brd: module loaded

[ 0.724507] loop: module loaded

[ 0.727903] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write

[ 0.790576] No daughter card found

[ 0.794214] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write

[ 0.809522] Board name: A335BONE

[ 0.812939] Board version: 00A3

[ 0.816250] The board is a AM335x Beaglebone.

[ 0.821492] platform omap_hsmmc.0: alias fck already exists

[ 0.828515] mtdoops: mtd device (mtddev=name/number) must be supplied

[ 0.835442] omap2-nand driver initializing

[ 0.839883] OneNAND driver initializing

[ 0.890610] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6

[ 0.897136] davinci_mdio davinci_mdio.0: detected phy mask fffffffe

[ 0.904167] davinci_mdio.0: probed

[ 0.907759] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720

[ 0.916719] usbcore: registered new interface driver cdc_ether

[ 0.922958] usbcore: registered new interface driver cdc_subset

[ 0.929248] Initializing USB Mass Storage driver...

[ 0.934514] usbcore: registered new interface driver usb-storage

[ 0.940861] USB Mass Storage support registered.

[ 0.945791] musb-hdrc musb-hdrc.1: MUSB HDRC host driver

[ 0.951520] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1

[ 0.959462] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002

[ 0.966655] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

[ 0.974278] usb usb1: Product: MUSB HDRC host driver

[ 0.979513] usb usb1: Manufacturer: Linux 3.1.0-rc8 musb-hcd

[ 0.985494] usb usb1: SerialNumber: musb-hdrc.1

[ 0.990877] hub 1-0:1.0: USB hub found

[ 0.994855] hub 1-0:1.0: 1 port detected

[ 0.999683] mousedev: PS/2 mouse device common for all mice

[ 1.006422] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0

[ 1.013200] omap_rtc: already running

[ 1.017120] i2c /dev entries driver

[ 1.021654] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec

[ 1.028067] Bluetooth: HCI UART driver ver 2.2

[ 1.032791] Bluetooth: HCI H4 protocol initialized

[ 1.037842] Bluetooth: HCILL protocol initialized

[ 1.044494] usbcore: registered new interface driver usbhid

[ 1.050378] usbhid: USB HID core driver

[ 1.054901] usbcore: registered new interface driver snd-usb-audio

[ 1.062333] ALSA device list:

[ 1.065462] No soundcards found.

[ 1.069056] nf_conntrack version 0.5.0 (3967 buckets, 15868 max)

[ 1.081813] TCP cubic registered

[ 1.085221] NET: Registered protocol family 17

[ 1.090183] Bluetooth: RFCOMM TTY layer initialized

[ 1.095385] Bluetooth: RFCOMM socket layer initialized

[ 1.100824] Bluetooth: RFCOMM ver 1.11

[ 1.104778] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[ 1.110376] Bluetooth: BNEP filters: protocol multicast

[ 1.115898] Bluetooth: HIDP (Human Interface Emulation) ver 1.2

[ 1.122344] Registering the dns_resolver key type

[ 1.127400] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3

[ 1.135517] ThumbEE CPU extension supported.

[ 1.140884] omap2_set_init_voltage: unable to get clk dpll1_ck

[ 1.147036] omap2_set_init_voltage: unable to set vdd_mpu_iva

[ 1.153129] omap2_set_init_voltage: unable to get clk l3_ick

[ 1.159097] omap2_set_init_voltage: unable to set vdd_core

[ 1.166267] Detected MACID=40:5f:c2:76:95:e0

[ 1.171784] omap_rtc omap_rtc: setting system clock to 2000-01-01 01:42:34 UTC (946690954)

[ 1.183833]

[ 1.183841] CPSW phy found : id is : 0x7c0f1

[ 1.190662] PHY 0:01 not found

[ 1.271668] mmc0: host does not support reading read-only switch. assuming write-enable.

[ 1.282736] mmc0: new high speed SDHC card at address 1234

[ 1.289089] mmcblk0: mmc0:1234 SA04G 3.63 GiB

[ 1.296308] mmcblk0: p1 p2 p3

[ 4.181137] PHY: 0:00 - Link is Up - 100/Full

[ 4.210587] Sending DHCP requests ...... timed out!

[ 79.502552] IP-Config: Reopening network devices...

[ 79.510323]

[ 79.510329] CPSW phy found : id is : 0x7c0f1

[ 79.517223] PHY 0:01 not found

[ 81.501298] PHY: 0:00 - Link is Up - 100/Full

[ 81.520586] Sending DHCP requests ...... timed out!

[ 168.812465] IP-Config: Auto-configuration of network failed.

[ 168.825370] kjournald starting. Commit interval 5 seconds

[ 169.345186] EXT3-fs (mmcblk0p2): using internal journal

[ 169.350740] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode

[ 169.358046] VFS: Mounted root (ext3 filesystem) on device 179:2.

[ 169.364833] Freeing init memory: 216K

INIT: version 2.86 booting

Please wait: booting...

Error opening /dev/fb0: No such device

Starting udev

[ 169.952594] udevd (76): /proc/76/oom_adj is deprecated, please use /proc/76/oom_score_adj instead.

[ 174.524983] kjournald starting. Commit interval 5 seconds

[ 175.116274] EXT3-fs (mmcblk0p3): using internal journal

[ 175.121851] EXT3-fs (mmcblk0p3): mounted filesystem with ordered data mode

[ 177.167713] alignment: ignoring faults is unsafe on this CPU. Defaulting to fixup mode.

Remounting root file system...

Caching udev devnodes

ALSA: Restoring mixer settings...

/usr/sbin/alsactl: load_state:1625: No soundcards found...

Configuring network interfaces... [ 184.827430]

[ 184.827445] CPSW phy found : id is : 0x7c0f1

[ 184.834384] PHY 0:01 not found

udhcpc (v1.13.2) started

Sending discover...

[ 186.821334] PHY: 0:00 - Link is Up - 100/Full

Sending discover...

No lease, forking to background

done.

Setting up IP spoofing protection: rp_filter.

Fri Nov 4 07:52:00 UTC 2011

INIT: Entering runlevel: 5

Starting system message bus: dbus.

Starting Hardware abstraction layer hald

Creating Dropbear SSH server RSA host key.

Will output 1024 bit rsa secret key to '/etc/dropbear/dropbear_rsa_host_key'

Generating key, this may take a while...

Public key portion is:

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgwCnlSedLCIvAEcPiZTFEeeKJ19shYIfTGIOtoeCPIBU8XArtaE9W7zuweLMzk/4WdAL9e9MF+NcJjbVAP2pytJHEETsomxWl0fziIeWQMa6RegvaJPgqLa4a1P1FSbmafUtbbjOmUU4MXMM6ZFqWfK8yMswNEt63Z3hscrbD37iuJYz root@am335x-evm

Fingerprint: md5 46:b2:f9:7f:87:60:e0:a0:e8:70:ca:5b:0c:b7:61:7d

Starting Dropbear SSH server: dropbear.

Starting telnet daemon.

Starting syslogd/klogd: done

Starting thttpd.

Starting Lighttpd Web Server: lighttpd.

2011-11-04 07:52:01: (log.c.166) server started

[ 204.433527] gadget: Mass Storage Function, version: 2009/09/11

[ 204.439795] gadget: Number of LUNs=2

[ 204.443753] lun0: LUN: removable file: /dev/mmcblk0p1

[ 204.449178] lun1: LUN: removable file: /dev/mmcblk0p3

[ 204.454649] gadget: Mass Storage Gadget, version: 2009/09/11

[ 204.460737] gadget: userspace failed to provide iSerialNumber

[ 204.466915] gadget: g_mass_storage ready

[ 204.471207] musb-hdrc musb-hdrc.0: MUSB HDRC host driver

[ 204.476891] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2

[ 204.484874] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002

[ 204.492056] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1

[ 204.499673] usb usb2: Product: MUSB HDRC host driver

[ 204.504923] usb usb2: Manufacturer: Linux 3.1.0-rc8 musb-hcd

[ 204.510902] usb usb2: SerialNumber: musb-hdrc.0

[ 204.516400] hub 2-0:1.0: USB hub found

[ 204.520376] hub 2-0:1.0: 1 port detected

[ 205.483441] gadget: high speed config #1: Linux File-Backed Storage

***************************************************************

NOTICE: This file system contains the followin GPLv3 packages:

binutils-dev

gdbserver

If you do not wish to distribute GPLv3 components please remove

the above packages prior to distribution. This can be done using

the opkg remove command. i.e.:

opkg remove <package>

Where <package> is the name printed in the list above

NOTE: If the package is a dependency of another package you

will be notified of the dependent packages. You should

use the --force-removal-of-dependent-packages option to

also remove the dependent packages as well

***************************************************************

/

Starting Matrix GUI application.

_____ _____ _ _

| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_

| | _| .'| . | . | | __| _| . | | | -_| _| _|

|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|

|___| |___|

Arago Project http://arago-project.org am335x-evm ttyO0

Arago 2011.09 am335x-evm ttyO0

am335x-evm login:

[ 本帖最后由 chenzhufly 于 2012-4-19 15:33 编辑 ]

蓝雨夜

beaglebone

的程序空间有多大啊？

chenzhufly

[ 0.000000] Memory: 256MB = 256MB total
[ 0.000000] Memory: 253928k/253928k available, 8216k reserved, 0K highmem

蓝雨夜

是外扩NAND 吗？

chenzhufly

这个明显是DDR2的大小啊

NAND在这个小板子上没有，是通过SD卡启动的

蓝雨夜

DDR2 SDRAM里？

chenzhufly

呵呵，DDR2 和 SDRAM是两个东西，都是外部动态存储器

貌似AM335X现在不支持SDRAM

[ 本帖最后由 chenzhufly 于 2012-4-19 16:19 编辑 ]

蓝雨夜

求分析解释，呵呵！

chenzhufly

google一下比我说的清楚，哈哈

SDRAM从发展到现在已经经历了四代，分别是：第一代SDR SDRAM，第二代DDR SDRAM，第三代DDR2 SDRAM，第四代DDR3 SDRAM.(显卡上的DDR已经发展到DDR5)

SDRAM
http://zh.wikipedia.org/wiki/SDRAM

DDR2
http://baike.baidu.com/view/1059123.htm

AM335X支持的存储器;
• 外部存储器接口 (EMIF)
– mDDR/DDR2/DDR3 控制器：
• mDDR: 200-MHz 时钟频率 (400-MHz 数据速
率)
• DDR2: 266-MHz 时钟频率 (532-MHz 数据速
率)
• DDR3: 303-MHz 时钟频率 (606-MHz 数据速
率)
• 16-位数据总线
• 1GB全部可寻址空间
• 支持1 x 16或者2 x 8存储器器件配置
• 支持快速唤醒保持
– 通用存储器控制器 (GPMC)
• 具有多达 7 芯片(NAND，NOR，复
用NOR，SRAM等)选择的灵活 8/16-位异步存
储器接口
• 使用 BCH 编码以支持 4-位，8-位，或者 16-
位 ECC
• 使用海明码（Hamming）以支持 1-位 ECC

[ 本帖最后由 chenzhufly 于 2012-4-19 16:23 编辑 ]