Keyboard shortcuts

Press ← or → to navigate between chapters

Press ? to show this help

Press Esc to hide this help

Clock column buffers

TODO: document

Tile HCLK

Cells: 2

Switchbox HCLK

spartan3 HCLK switchbox HCLK programmable buffers
DestinationSourceBit
S.GCLK[0]N.GCLK_QUAD[0]MAIN[15][0]
S.GCLK[1]N.GCLK_QUAD[1]MAIN[13][0]
S.GCLK[2]N.GCLK_QUAD[2]MAIN[11][0]
S.GCLK[3]N.GCLK_QUAD[3]MAIN[9][0]
S.GCLK[4]N.GCLK_QUAD[4]MAIN[7][0]
S.GCLK[5]N.GCLK_QUAD[5]MAIN[5][0]
S.GCLK[6]N.GCLK_QUAD[6]MAIN[3][0]
S.GCLK[7]N.GCLK_QUAD[7]MAIN[1][0]
N.GCLK[0]N.GCLK_QUAD[0]MAIN[16][0]
N.GCLK[1]N.GCLK_QUAD[1]MAIN[14][0]
N.GCLK[2]N.GCLK_QUAD[2]MAIN[12][0]
N.GCLK[3]N.GCLK_QUAD[3]MAIN[10][0]
N.GCLK[4]N.GCLK_QUAD[4]MAIN[8][0]
N.GCLK[5]N.GCLK_QUAD[5]MAIN[6][0]
N.GCLK[6]N.GCLK_QUAD[6]MAIN[4][0]
N.GCLK[7]N.GCLK_QUAD[7]MAIN[2][0]

Bels GLOBALSIG_HCLK_S3

spartan3 HCLK bel GLOBALSIG_HCLK_S3 pins
PinDirectionGLOBALSIG_HCLK
spartan3 HCLK bel GLOBALSIG_HCLK_S3 attribute bits
AttributeGLOBALSIG_HCLK
ENABLE!MAIN[0][0]

Bitstream

spartan3 HCLK rect MAIN
BitFrame
F18 F17 F16 F15 F14 F13 F12 F11 F10 F9 F8 F7 F6 F5 F4 F3 F2 F1 F0
B0 - - HCLK: buffer N.GCLK[0] ← N.GCLK_QUAD[0] HCLK: buffer S.GCLK[0] ← N.GCLK_QUAD[0] HCLK: buffer N.GCLK[1] ← N.GCLK_QUAD[1] HCLK: buffer S.GCLK[1] ← N.GCLK_QUAD[1] HCLK: buffer N.GCLK[2] ← N.GCLK_QUAD[2] HCLK: buffer S.GCLK[2] ← N.GCLK_QUAD[2] HCLK: buffer N.GCLK[3] ← N.GCLK_QUAD[3] HCLK: buffer S.GCLK[3] ← N.GCLK_QUAD[3] HCLK: buffer N.GCLK[4] ← N.GCLK_QUAD[4] HCLK: buffer S.GCLK[4] ← N.GCLK_QUAD[4] HCLK: buffer N.GCLK[5] ← N.GCLK_QUAD[5] HCLK: buffer S.GCLK[5] ← N.GCLK_QUAD[5] HCLK: buffer N.GCLK[6] ← N.GCLK_QUAD[6] HCLK: buffer S.GCLK[6] ← N.GCLK_QUAD[6] HCLK: buffer N.GCLK[7] ← N.GCLK_QUAD[7] HCLK: buffer S.GCLK[7] ← N.GCLK_QUAD[7] GLOBALSIG_HCLK: ! ENABLE

Tile HCLK_UNI

Cells: 2

Switchbox HCLK

spartan3 HCLK_UNI switchbox HCLK programmable buffers
DestinationSourceBit
N.GCLK[0]N.GCLK_QUAD[0]MAIN[15][0]
N.GCLK[1]N.GCLK_QUAD[1]MAIN[13][0]
N.GCLK[2]N.GCLK_QUAD[2]MAIN[11][0]
N.GCLK[3]N.GCLK_QUAD[3]MAIN[9][0]
N.GCLK[4]N.GCLK_QUAD[4]MAIN[7][0]
N.GCLK[5]N.GCLK_QUAD[5]MAIN[5][0]
N.GCLK[6]N.GCLK_QUAD[6]MAIN[3][0]
N.GCLK[7]N.GCLK_QUAD[7]MAIN[1][0]

Bels GLOBALSIG_HCLK_S3

spartan3 HCLK_UNI bel GLOBALSIG_HCLK_S3 pins
PinDirectionGLOBALSIG_HCLK
spartan3 HCLK_UNI bel GLOBALSIG_HCLK_S3 attribute bits
AttributeGLOBALSIG_HCLK
ENABLE!MAIN[0][0]

Bitstream

spartan3 HCLK_UNI rect MAIN
BitFrame
F18 F17 F16 F15 F14 F13 F12 F11 F10 F9 F8 F7 F6 F5 F4 F3 F2 F1 F0
B0 - - - HCLK: buffer N.GCLK[0] ← N.GCLK_QUAD[0] - HCLK: buffer N.GCLK[1] ← N.GCLK_QUAD[1] - HCLK: buffer N.GCLK[2] ← N.GCLK_QUAD[2] - HCLK: buffer N.GCLK[3] ← N.GCLK_QUAD[3] - HCLK: buffer N.GCLK[4] ← N.GCLK_QUAD[4] - HCLK: buffer N.GCLK[5] ← N.GCLK_QUAD[5] - HCLK: buffer N.GCLK[6] ← N.GCLK_QUAD[6] - HCLK: buffer N.GCLK[7] ← N.GCLK_QUAD[7] GLOBALSIG_HCLK: ! ENABLE