阅读:1921回复:5
9052问题-93c46能替代93cs46吗?
用9052实现从isa到pci的转换,板子已经做好了,开机后,系统没有提示找到新设备,设备管理器中也没有新硬件,用windriver却能找到,但配置寄存器中只被写入了部分的值,怀疑所用的eeprom有问题,没有买到推荐的nm9346,搞到一块atmel公司的93c46顶替,型号上所差的这个s代表什么意思呢?是不是93c46不能替代93cs46的功能?
都做到这个份上了,真担心功亏一篑,最后做不出来啊,sigh. |
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沙发#
发布于:2003-02-23 21:11
对照着两个数据手册啃了半天,终于搞明白了,93C46确实不行,不支持连续读写(sequential read).
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板凳#
发布于:2003-02-23 21:15
是的,如果我没有搞错的话,在PCI9052的DataBook上,PLX会对93CS和C有特别的说明的,必须用有‘S’功能的
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地板#
发布于:2003-02-25 18:39
用户被禁言,该主题自动屏蔽! |
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地下室#
发布于:2003-02-25 18:41
用户被禁言,该主题自动屏蔽! |
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5楼#
发布于:2003-02-26 18:01
哥们,谢了,附件很有用。我也找到一些材料:
不一定要用93S46,对于9050和9052,PLX推荐使用的eeprom为 Fairchild Semiconductor 1K FM93CS46 Note: Must have sequential read function Holtek Semiconductor 1K HT93LC46 Note: For HT93LC46, ORG pin must be tied to VCC for 16-bit Integrated Silicon Solution 1K IS93C46-3 Note: No restrictions Microchip Technology 1K 93AA46 1K 93C46B 1K 93LC46B Note: Cannot use x8 devices (Cannot use 93Cx6A or 93LCx6A) Note: For 93AA46, ORG pin must be unconnected or tied to VCC for 16-bit organization Rohm Microelectronics 1K BR93LC46 Note: No restrictions Seiko Instruments 1K S-93C46A Note: Cannot use \"U\" devices (Do not support 5V operation) ST Microelectronics 1K M93C46 1K M93S46 Note: Cannot use \"R\" devices (Do not support 5V operation) Note: For M93C46, ORG pin must be unconnected or tied to VCC for 16-bit organization PLX认为可以替代的器件为: Atmel Corporation 1K None Note: Atmel does not have sequential read function Catalyst Semiconductor 1K None Note: CAT93C46 does not have the sequential read function Microchip Technology 1K 93LC46B Note: Cannot use x8 devices (Cannot use 93LC46A) |
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