Jlink + IAR调试时下载速度上不去呀，基本都是110KB/S，代码大点的话就有点慢呀～～～
不知有无改进的可能？哪里改改设置？
下面是直接用Jlink测到的速度，IAR下载速度跟之一致。
J-Link>device am3359
Info: Device "AM3359" selected (0 KB flash, 0 KB RAM).
Reconnecting to target...
Info: TotalIRLen = 6, IRPrint = 0x01
Info: TotalIRLen = 10, IRPrint = 0x0011
Info: ARM AP[0]: 0x04770001, AHB-AP
Info: ARM AP[1]: 0x04770002, APB-AP
Info: ARM AP[2]: 0x04760000, JTAG-AP
Info: Found Cortex-A8 r3p2
Info: 6 code breakpoints, 2 data breakpoints
Info: Data endian: little
Info: Main ID register: 0x413FC082
Info: L1 (I-cache): 32 KB, 128 sets, LineSize 64 bytes, 4-way
Info: L1 (D-cache): 32 KB, 128 sets, LineSize 64 bytes, 4-way
Info: L2 (unified cache): 0 KB, 1 sets, LineSize 256 bytes, 1-way
Info: System control register:
Info: Instruction endian: little
Info: Level-1 instruction cache enabled
Info: Level-1 data cache enabled
Info: MMU enabled
Info: Branch prediction enabled
J-Link>speed 1000
Target interface speed: 1000 kHz
J-Link>testwspeed 0x402F0400 0x00019000
Speed test: Writing 8 * 100kb into memory @ address 0x402F0400 ........
100 kByte written in 1568ms ! (65.3 KByte/sec)
J-Link>speed 2000
Target interface speed: 2000 kHz
J-Link>testwspeed 0x402F0400 0x00019000
Speed test: Writing 8 * 100kb into memory @ address 0x402F0400 ........
100 kByte written in 912ms ! (112.3 KByte/sec)
J-Link>speed 8000
Target interface speed: 8000 kHz
J-Link>testwspeed 0x402F0400 0x00019000
Speed test: Writing 8 * 100kb into memory @ address 0x402F0400 ........
100 kByte written in 910ms ! (112.5 KByte/sec)
J-Link>speed 12000
Target interface speed: 12000 kHz
J-Link>testwspeed 0x402F0400 0x00019000
Speed test: Writing 8 * 100kb into memory @ address 0x402F0400 ........
100 kByte written in 912ms ! (112.3 KByte/sec)
J-Link>testRspeed 0x402F0400 0x00019000
Speed test: Reading 8 * 100kb from address 0x402F0400 ........
100 kByte read in 1064ms ! (96.2 KByte/sec)
J-Link>
