各位大虾，有谁用过EPCS64。

如用过，你们用的是AS配置模式还是JTAG模式，还有提个弱弱的问题，EPCS64相比EPC16哪个用的更方便些。

[此贴子已经被作者于2007-10-18 0:20:45编辑过]

各位大虾，有谁用过EPCS64。

如用过，你们用的是AS配置模式还是JTAG模式，还有提个弱弱的问题，EPCS64相比EPC16哪个用的更方便些。

”

epcs为配置芯片，都是串行的flash。epcs64和16的区别是大小不同。当然对应的价格也不同。

所以看你的fpga需要多少配置信息来选对应的epcs。

应该只是大小不同，两者甚至可以互换，并都支持active serial configuration ：

With SRAM-based devices that support active serial configuration,
configuration data must be reloaded each time the device powers up, the
system reconfigures, or when new configuration data is required. Serial
configuration devices are flash memory devices with a serial interface
that can store configuration data for FPGA devices that support active
serial configuration and reload the data to the device upon power-up or
reconfiguration. Table 14–1 lists the serial configuration devices.

Device Memory Size (Bits)
EPCS1 1,048,576
EPCS4 4,194,304
EPCS16 16,777,216
EPCS64 67,108,864
EPCS128 134,217,728

Table 14–2. Serial Configuration Device Support for Stratix III Devices (Part 1 of 2)

For an 8-pin SOIC package, you can migrate vertically from the EPCS1 to
the EPCS4 or EPCS16 devices since the EPCS devices are offered in the
same device package. Similarly, for a 16-pin SOIC package, you can
migrate vertically from the EPCS16 to the EPCS64 or EPCS128 devices.

参考：cyc_c51014.pdf

[此贴子已经被作者于2007-10-20 12:39:05编辑过]