インテルのみ表示可能 — GUID: bhc1411116943785
Ixiasoft
4.4.4. クロック相関
例1
LMF=222、K=16、データレート = 6.5 GbpsのTargeted Device
Device Clock Selected = 325 MHz (IPコアの生成中に取得)
Link Clock = 6.5 GHz/40 = 162.5 MHz
Frame Clock = 6.5 GHz/(10x2) = 325 MHz
Local Multiframe Clock = 325 MHz / 16 = 20.3125 MHz
SYSREF Frequency = Local Multiframe Clock / n; (n = 整数; 1、2、…)
Local Multiframe Clock Counter = (F × K/4) = (2×16/4) = 8 リンククロック 24
例2
LMF=244、K=16、データレート = 5.0 GbpsのTargeted Device
Device Clock Selected = 125 MHz (IPコアの生成中に取得)
Link Clock = 5 GHz/40 = 125 MHz 25
Frame Clock = 5 GHz /(10×4) = 125 MHz 25
Local Multiframe Clock = 125 MHz / 16 = 7.8125 MHz
SYSREF Frequency = Local Multiframe Clock / n; (n = 整数; 1、2、…)
Local Multiframe Clock Counter = (F × K/4) = (4×16/4) = 16リンククロック 24
例3
LMF=421、K=32、データレート = 10.0 GbpsのTargeted Device
Device Clock Selected = 250 MHz (IPコアの生成中に取得)
Link Clock = 10 GHz/40 = 250 MHz
Frame Clock = 10 GHz/(10×1) = 1 GHz 26
Local Multiframe Clock = 1 GHz / 32 = 31.25 MHz
SYSREF Frequency = Local Multiframe Clock / n; (n = 整数; 1, 2, …)
Local Multiframe Clock Counter = (F × K/4) = (1×32/4) = 8リンククロック 24
例4 (F=3 の場合、インテルStratix 10デバイスのみ)
LMF=883、K=32、データレート = 12.0 GbpsのTargeted Device
Device Clock Selected = 300 MHz (IPコアの生成中に取得)
Link Clock = 12 GHz/40 = 300 MHz
Frame Clock = 12 GHz/(10×3) = 400 MHz 27
Local Multiframe Clock = 400 MHz / 32 = 12.5 MHz
SYSREF Frequency = Local Multiframe Clock / n; (n = 整数; 1, 2, …)
Local Multiframe Clock Counter = (F × K/4) = (3×32/4) = 24リンククロック 24