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參數(shù)資料
| 型號(hào)： | MC68838FCC |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 125M bps, FDDI CONTROLLER, CQFP120 |
| 封裝： | CERAMIC, QFP-120 |
| 文件頁(yè)數(shù)： | 50/100頁(yè) |
| 文件大?。?/td> | 465K |
| 代理商： | MC68838FCC |
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MOTOROLA
MC68838 USER’S MANUAL
3- 33
3.7.4 Receive CRC Registers (RX_CRC)
Receive CRC is a 32-bit register whose least significant 16 bits have address 31 (hex) and
whose most significant 16 bits have address 32 (hex). Because this register can change
(and normally will) between two read operations, it may be impossible to get a consistent
value without stopping the BYTCLK. This register is only expected to be read in test mode,
where test programs do not need consistent values. Reading this register provides the
inverse (bitwise NOT) of the internal CRC register.
3.7.5 Transmit CRC Register (TX_CRC)
Transmit CRC is a 32-bit register whose least significant 16 bits have address 33 (hex)
and whose most significant 16 bits have address 34 (hex). Because this register can
change (and normally will) between two read operations, it may be impossible to get a
consistent value without stopping the BYTCLK. This register is only expected to be read in
test mode, because test programs do not need consistent values. Reading this register
provides the internal CRC register, not its inverse, although the inverse would be
transmitted.
ARCHIVE
INFORMA
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ARCHIVE
INFORMA
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