IC表面上有个字符代表的意思看不懂,请高手指教一下

Rachel_4h

IC上有个代码FXXXXXX,看规格书的大意是:
F = A [TSMC, Fab 12 (digital die) + IBM, BTV (analog die)]
F = B [TSMC, Fab 14 (digital die) + IBM, BTV (analog die)]
F = C [TSMC, Fab 12 (digital die) + Chartered, F3 (analog die)]
F = D [TSMC, Fab 14 (digital die) + Chartered, F3 (analog die)]
F = E [TSMC, Fab 14 (digital die) + IBM, Altis (analog die)]
F = F [TSMC, Fab 12 (digital die) + IBM, Altis (analog die)]


这些是什么意思啊