GE DS200CDBAG1B接触器驱动板
JTAG直通[关]开正常操作直通模式S1-5 CORE1低内存偏移[关]通正常操作S1-6 PMC 133MHz[关]ON PMC 100MHz最大PMC 133MHz最大S1-7主WP[关]开启主写保护禁用主写保护启用S1-8保留安全启动开关当Safe_Start开关关闭时，表示应使用正常ENV设置。当开关设置为ON时，GEV、VPD和SPD设置将被忽略，并使用已知的安全值。2.4.1.2引导块B选择当开关关闭时，闪存映射正常，块A被选择，如图3所示。当开关打开时，块B被映射到最高地址。2.4.1.3闪存组写入保护当闪存组WP开关关闭时，表示整个NOR闪存未被写入保护。NOR闪存用于执行代码。当开关打开时，表示闪存受到写保护，任何对闪存设备的写入都被硬件阻止。
JTAG Pass Thru [OFF] ON Normal operation Pass-thru mode S1-5 CORE1 Low Memory Offset [OFF] ON Normal operation S1-6 PMC 133MHz [OFF] ON PMC 100MHz maximum PMC 133MHz maximum S1-7 Master WP [OFF] ON Master write protect disabled Master write protect enabled S1-8 Reserved Safe Start Switch When the SAFE_START switch is OFF, it indicates that the normal ENV setting should be used. When the switch is set to ON, GEVs, VPD, and SPD settings are ignored and known, safe, values are used. 2.4.1.2 Boot Block B Select When the switch is OFF, the flash memory map is normal and block A is selected as shown in Figure 3. When the switch is ON, block B is mapped to the highest address. 2.4.1.3 Flash Bank Write Protect When the FLASH BANK WP switch is OFF, it indicates that the entire NOR flash is not write-protected. NOR flash is used for executing code. When the switch is ON, it indicates that the flash is write-protected and any writes to the flash devices are blocked by hardware.
