| arm용 linux 패치 (0) | 2011.06.20 |
|---|---|
| ARM JTAG / Wiggler + H-JTAG (0) | 2010.07.16 |
| ARM JTAG 14pin / 20pin 변환하기 (0) | 2010.07.01 |
| ARM JTAG - Wiggler 14pin , 20pin pinout (0) | 2010.06.26 |
| Cortex-A8 ? (2) | 2010.05.10 |
|
|
| ARM JTAG / Wiggler + H-JTAG (0) | 2010.07.16 |
|---|---|
| ARM용(암용) 툴체인, 컴파일러 - arm-linux-gcc : tool chain for ARM (0) | 2010.07.03 |
| ARM JTAG - Wiggler 14pin , 20pin pinout (0) | 2010.06.26 |
| Cortex-A8 ? (2) | 2010.05.10 |
| 별 시덥지 않은 이야기 (ST40 core 와 ARM) (0) | 2010.05.03 |
More pin-outs see at http://www.ocdemon.net/pinouts.pdf
Usual pin-out for 14-pin JTAG header (often used for ARM)
|
1 -Vddh (+3.3v) |
2 - Vss (ground) |
|
3 - nTRST |
4 - Vss (ground) |
|
5 - TDI |
6 -Vss (ground) |
|
7 - TMS |
8 -Vss (ground) |
|
9 - TCK |
10-Vss (ground) |
|
11- TDO |
12-nRESET (optional) |
|
13- Vddh (+3.3v) |
14-Vss (ground) |
Usual pin-out for 20-pin JTAG header (sometimes used for ARM)
|
1 - Vddh (+3.3v) |
2 - Vddh (+3.3v) |
|
3 - nTRST |
4-Vss (ground) |
|
5 - TDI |
6-Vss (ground) |
|
7 - TMS |
8-Vss (ground) |
|
9 - TCK |
10-Vss (ground) |
|
11 -------- |
12-Vss (ground) |
|
13 –TDO |
14-Vss (ground) |
|
15 – nRST |
16-Vss (ground) |
|
17--------- |
18-Vss (ground) |
|
19--------- |
20-Vss (ground) |
Usual pin-out for 8-pin JTAG header, often used for PLD programming
|
1 – vddh (+3.3v) |
|
2 – TDO |
|
3 – TDI |
|
4 – nTRST |
|
5 |
|
6 – TMS |
|
7 – vss (ground) |
|
8 – TCK |
| ARM용(암용) 툴체인, 컴파일러 - arm-linux-gcc : tool chain for ARM (0) | 2010.07.03 |
|---|---|
| ARM JTAG 14pin / 20pin 변환하기 (0) | 2010.07.01 |
| Cortex-A8 ? (2) | 2010.05.10 |
| 별 시덥지 않은 이야기 (ST40 core 와 ARM) (0) | 2010.05.03 |
| ARM JTAG DIY (0) | 2010.05.03 |
| Cortex-A8 Processor The ARM Cortex™-A8 processor is based on the ARMv7 architecture and has the ability to scale in speed from 600MHz to greater than 1GHz. The Cortex-A8 processor can meet the requirements for power-optimized mobile devices needing operation in less than 300mW; and performance-optimized consumer applications requiring 2000 Dhrystone MIPS. [링크 : http://www.arm.com/products/processors/cortex-a/cortex-a8.php] |
  현재까지는 ARMv7가 가장 최신 아키텍쳐인것으로 보이며 결론은 ARM7과 ARMv7은 천지차이(결론이 이상해!) |
 [링크 : http://www.ti.com/ww/kr/embedded/arm/index.html] |
| DMIPS / Dhrystone MIPS Dhrystone is a synthetic computing benchmark program developed in 1984 by Reinhold P. Weicker intended to be representative of system (integer) programming. The Dhrystone grew to become representative of general processor (CPU) performance until it was superseded by the CPU89 benchmark suite from the Standard Performance Evaluation Corporation, today known as the "SPECint" suite. The name is a pun on a different benchmark algorithm called Whetstone. The Dhrystone benchmark contains no floating point operations, thus the name is a pun on the then-popular Whetstone benchmark for floating point operations. The output from the benchmark is the number of Dhrystones per second (the number of iterations of the main code loop per second). [링크 : http://en.wikipedia.org/wiki/Dhrystone] |
| ARM용(암용) 툴체인, 컴파일러 - arm-linux-gcc : tool chain for ARM (0) | 2010.07.03 |
|---|---|
| ARM JTAG 14pin / 20pin 변환하기 (0) | 2010.07.01 |
| ARM JTAG - Wiggler 14pin , 20pin pinout (0) | 2010.06.26 |
| 별 시덥지 않은 이야기 (ST40 core 와 ARM) (0) | 2010.05.03 |
| ARM JTAG DIY (0) | 2010.05.03 |
| STR71x STR71x: 144/64-pin ARM7TDMI MCU with up to 256KB FLASH, 64KB RAM and EMI [링크 : http://www.st.com/mcu/devicedocs-STR710FZ1-86.html] |
[링크 : http://www.devicemart.co.kr/mart7/mall.php?cat=010001000&query=view&no=24495] |
| ARM용(암용) 툴체인, 컴파일러 - arm-linux-gcc : tool chain for ARM (0) | 2010.07.03 |
|---|---|
| ARM JTAG 14pin / 20pin 변환하기 (0) | 2010.07.01 |
| ARM JTAG - Wiggler 14pin , 20pin pinout (0) | 2010.06.26 |
| Cortex-A8 ? (2) | 2010.05.10 |
| ARM JTAG DIY (0) | 2010.05.03 |
 [링크 : http://www.eleparts.co.kr/front/productdetail.php?productcode=017023007001000006&sort=] |
 [링크 : http://www.frozeneskimo.com/electronics/arm-tutorials/jtag-wiggler-clone/] |
| 74HC/HCT vs.74AC/ACT "AC / ACT stands for Advanced CMOS Logic (ACL for short). HC / HCT stands for High-speed CMOS Logic (HCL). The AC and ACT subfamilies are faster than the HC and HCT subfamilies, and draw some more power in some circuits. All chips in the AC* subfamily have lower output resistance than HC* and can sink and source 24 mA at logic levels and up 70 mA (typ) per gate for motor loads. As a result AC* gates can handle more than twice the current of HC* gates (50 - 70 mA vs. 24 mA). Note, though, that while most HC* chips have a 25 mA limit, the HC* driver chips such as the 74HC240 and the 74HC245 (i.e., buffers) can handle 35 mA per device, and a maximum of 75 mA per chip. The AC & ACT families also draw about twice as much current as the HC & HCT chips (but we speaking here of microamps, so it's usually not a huge deal). It is occasionally possible to find (high quality) motors that you can drive directly from an HC chip. For intermittent operation, such as you get with a quadcore, you COULD drive very efficient (i.e., very low-current) motors directly. You would definitely need a capacitor (say 0.47 uF) across each motor to keep the noise under control. [링크 : http://www.extremetesting.tv/forums/showthread.php?t=16755] |
| ARM용(암용) 툴체인, 컴파일러 - arm-linux-gcc : tool chain for ARM (0) | 2010.07.03 |
|---|---|
| ARM JTAG 14pin / 20pin 변환하기 (0) | 2010.07.01 |
| ARM JTAG - Wiggler 14pin , 20pin pinout (0) | 2010.06.26 |
| Cortex-A8 ? (2) | 2010.05.10 |
| 별 시덥지 않은 이야기 (ST40 core 와 ARM) (0) | 2010.05.03 |
|
