TI的原廠資料
http://focus.ti.com/docs/prod/folde...t/tsb82aa2.html
Description
The TSB82AA2 OHCI-Lynx operates as the interface between a 33-MHz/64-bit or 33-MHz/32-bit PCI local bus anda compatible 1394b PHY-layer device (such as the TSB81BA3 device) that is capable of supporting serial data ratesat 98.304M, 196.608M, 393.216M, or 786.432M bits/s (referred to as S100, S200, S400, or S800 speeds,respectively). When acting as a PCI bus master, the TSB82AA2 device is capable of multiple cacheline bursts of data,which can transfer at 264M bytes/s for 64-bit transfers or 132M bytes/s for 32-bit transfers after connecting to thememory controller

潑了兩桶冷水,也要說點正面的資料
除了頻寬,1394b比起1394a還是多了些功能(雖然不一定有機會用到),比方......連線距離100m(1394a只有4.5m),......好吧,100m畢竟增加不少彈性吧