參數(shù)資料
型號： KSZ8841-16MQL-EVAL
廠商： Micrel Inc
文件頁數(shù)： 41/105頁
文件大?。?/td> 0K
描述： BOARD EVALUATION KSZ8841-16MQL
標(biāo)準(zhǔn)包裝： 1
主要目的： 接口，以太網(wǎng)控制器（PHY 和 MAC）
嵌入式： 否
已用 IC / 零件： KSZ8841-16MQL
主要屬性： 1 個(gè)端口，100BASE-TX/10BASE-T
次要屬性： 8/16 位接口，LinkMD 線纜診斷
已供物品： 板，CD，文檔，電源
相關(guān)產(chǎn)品： KSZ8841-16MQL A6-ND - IC MAC CTRLR 8/16BIT 128-PQFP
576-2115-ND - IC MAC CTRLR 32BIT 128-PQFP
576-2112-ND - IC MAC CTRLR 8/16BIT 128-PQFP
其它名稱： 576-1631
Micrel, Inc.
KSZ8841-16/32 MQL/MVL/MBL
October 2007
40
M9999-102207-1.6
Bit
Description
1
RXRF Receive Runt Frame
When set, it indicates that a frame was damaged by a collision or had a premature termination
before the collision window passed.
Runt frames are passed to the host only if the pass bad frame bit is set.
0
RXCE Receive CRC Error
When set, it indicates that a CRC error has occurred on the current received frame.
CRC error frames are passed to the host only if the pass bad frame bit is set.
Table 7. RXQ Receive Packet Status Word
Table 8 gives the format of the RX byte count field.
Bit
Description
15-11
Reserved
10-0
RXBC Receive Byte Count
Receive Byte Count up to 1916 bytes
Table 8. RXQ Receive Packet Byte Count Word
EEPROM Interface
It is optional in the KSZ8841M to use an external EEPROM. In the case that an EEPROM is not used, the EEEN pin must
be tied Low or floating.
An external serial EEPROM with a standard microwire bus interface is used for non-volatile storage of information such as
the host MAC address, base address, and default configuration settings. The KSZ8841M can detect if the EEPROM is a
1KB (93C46) or 4KB (93C66) EEPROM device (the 93C46 and the 93C66 are typical EEPROM devices). The EEPROM
is organized as 16-bit mode.
If the EEEN pin is pulled high, then the KSZ8841M performs an automatic read of the external EEPROM words 0H to 6H
after the de-assertion of Reset. The EEPROM values are placed in certain host-accessible registers. EEPROM read/write
functions can also be performed by software read/writes to the EEPCR registers.
The KSZ8841M EEPROM format is given in Table 9.
WORD
15
8
7
0
0H
Base Address
1H
Host MAC Address Byte 2
Host MAC Address Byte 1
2H
Host MAC Address Byte 4
Host MAC Address Byte 3
3H
Host MAC Address Byte 6
Host MAC Address Byte 5
4H
Reserved
5H
Reserved
6H
ConfigParam (see Table 10)
7H-3FH
Not used for KSZ8841M (available for user to use)
Table 9. KSZ8841M EEPROM Format
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