LT9673a模块,ABB英文使用说明
扬声器控制MVME2603/2604基板向14针组合LED夹层/远程复位接头，J1。当J1为当移除LED夹层时，用作远程重置连接器扬声器输出信号可以通过电缆连接到外部扬声器，以获得蜂鸣音。关于J1的引脚分配，请参阅第4章中的表4-1，连接器引脚分配。PM603/604处理器目前，您可以选择PowerPC 603或PowerPC 604具有16MB至256MB ECC DRAM、256KB 2级的处理器芯片高速缓存（二级缓存）和高达9MB的闪存。
LT9673a模块二级缓存和1MB 16位闪存位于MVME2603/2604基板上。ECC DRAM和4MB或8MB额外（64位）闪存位于RAM200内存夹层上。PowerPC 603是一个64位处理器，具有32KB的片上缓存（16KB）数据缓存和16KB指令缓存）。PowerPC 604是64位的具有32KB片上缓存（16KB数据缓存和16KB）的处理器指令缓存）。Raven桥接器控制器ASIC提供了PowerPC微处理器总线和PCI本地总线。电气方面Raven芯片是64位PCI连接。四个可编程地图解码器在每个方向上，在PowerPC之间提供灵活的寻址微处理器总线和PCI本地总线。闪存MVME2603/2604基板提供1MB 16位闪存内存位于两个8位插槽中。RAM200内存夹层可容纳4MB或8MB额外的64位闪存。板载监视器/调试器PPCBug位于闪存芯片中。PPCBug提供以下功能：❏ 启动操作系统❏ 重置后初始化❏ 显示和修改配置变量❏ 运行自检和诊断❏ 更新固件ROM在正常操作下，闪存设备处于“只读”模式内容是预定义的，可以防止意外写入由于断电情况。然而，出于编程目的，编程电压始终提供给设备和闪光灯可以通过执行适当的程序命令来修改内容序列请参阅第三方数据表和/或PPCBug附录D中列出的固件包用户手册，相关文档，以获取有关修改的更多特定于设备的信息Flash内容。
Speaker Control
The MVME2603/2604 base board supplies a SPEAKER_OUT signal to the
14-pin combined LED-mezzanine/remote-reset connector, J1. When J1 is
used as a remote reset connector with the LED mezzanine removed, the
SPEAKER_OUT signal can be cabled to an external speaker to obtain a
beep tone. For the pin assignments of J1, refer to Table 4-1 in Chapter 4,
Connector Pin Assignments.
PM603/604 Processor
At present, you have the choice of a PowerPC 603 or a PowerPC 604
processor chip with 16MB to 256MB of ECC DRAM, 256KB of level 2
cache (L2 cache), and up to 9MB of Flash memory. The L2 cache and
1MB of 16-bit Flash memory reside on the MVME2603/2604 base board.
The ECC DRAM and 4MB or 8MB of additional (64-bit) Flash memory
are located on the RAM200 memory mezzanine.
The PowerPC 603 is a 64-bit processor with 32KB on-chip cache (16KB
data cache and 16KB instruction cache). The PowerPC 604 is a 64-bit
processor with 32KB on-chip cache (16KB data cache and 16KB
instruction cache).The Raven bridge controller ASIC provides the bridge between the
PowerPC microprocessor bus and the PCI local bus. Electrically, the
Raven chip is a 64-bit PCI connection. Four programmable map decoders
in each direction provide flexible addressing between the PowerPC
microprocessor bus and the PCI local bus.
Flash Memory
The MVME2603/2604 base board has provision for 1MB of 16-bit Flash
memory in two 8-bit sockets. The RAM200 memory mezzanine
accommodates 4MB or 8MB of additional 64-bit Flash memory.
The onboard monitor/debugger, PPCBug, resides in the Flash chips.
PPCBug provides functionality for:
❏ Booting the operating system
❏ Initializing after a reset
❏ Displaying and modifying configuration variables
❏ Running self-tests and diagnostics
❏ Updating firmware ROM
Under normal operation, the Flash devices are in “read-only” mode, their
contents are pre-defined, and they are protected against inadvertent writes
due to loss of power conditions. However, for programming purposes,
programming voltage is always supplied to the devices and the Flash
contents may be modified by executing the proper program command
sequence. Refer to the third-party data sheet and/or to the PPCBug
Firmware Package User’s Manual, listed in Appendix D, Related
Documentation, for further device-specific information on modifying
Flash contents.
