參數(shù)資料
型號: KSZ8999I
廠商: Micrel Inc
文件頁數(shù): 18/52頁
文件大?。?/td> 0K
描述: IC SWITCH 9-PORT 10/100 208PQFP
標(biāo)準(zhǔn)包裝: 24
系列: *
類型: *
應(yīng)用: *
安裝類型: 表面貼裝
封裝/外殼: 208-MQFP,208-PQFP
供應(yīng)商設(shè)備封裝: 208-PQFP(28x28)
包裝: 管件
產(chǎn)品目錄頁面: 1081 (CN2011-ZH PDF)
配用: 576-1644-ND - BOARD EVALUATION FOR KSZ8999
其它名稱: 576-2128
KSZ8999I-ND
January 2005
25
KS8999
Micrel
Note that the signal MRXER is not provided on the MII interface for the KS8999 for PHY mode operation and MTXER is not
represented for MAC mode. Normally this would indicate a receive / transmit error coming from the physical layer /MAC device,
but is not appropriate for this configuration. If the connecting device has a MRXER pin, this should be tied low on the other device
for reverse or if it has a MTXER pin in the forward mode it should also be tied low on the other device.
The following explains the KS8999 in PHY mode and MAC mode of operation:
KS8999 PHY Mode
External
MAC
Controller
KS8999
In PHY
mode
MTXC
MTXD[3:0]
MTXEN
MTXER
Figure 3. Data Sent from External MAC Controller to KS8999 PHY Mode
External
MAC
Controller
KS8999
In PHY
Mode
MRXC
MRXD[3:0]
MRXEN
Figure 4. Data Sent from PHY Mode to External MAC Controller
KS8999 MAC Mode
KS8999
In MAC
mode
External
PHY
MRXC
MTXD[3:0]
MTXEN
MTXER
Figure 5. Data Sent from PHY Device to KS8999 MAC Mode
KS8999
In MAC
Mode
External
PHY
MTXC
MRXD[3:0]
MRXDV
Figure 6. Data Sent from KS8999 PHY Mode to External PHY Device
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