R
Functional Description
Table 35: Direct Connections from Clock Inputs to DCMs and Associated DCM Location String
Clock Input
GCLK[3:0]
XC3S100E
DCM_X0Y0
N/A
XC3S250E/XC3S500E
DCM_X1Y0
N/A
XC3S1200E/XC3S1600E
DCM_X2Y0
RHCLK[3:0]
RHCLK[7:4]
GCLK[7:4]
DCM_X3Y1
N/A
N/A
DCM_X3Y2
DCM_X0Y1
N/A
DCM_X1Y1
DCM_X0Y1
N/A
DCM_X2Y2
GCLK[11:8]
LHCLK[3:0]
LHCLK[7:4]
GCLK[15:12]
DCM_X1Y3
N/A
DCM_X0Y2
N/A
N/A
DCM_X0Y1
N/A
DCM_X0Y0
DCM_X1Y0
Table 36: Connections from Clock Inputs to BUFGMUX Elements and Associated Quadrant Clock
Quadrant
Clock
Line(1)
Left-Half BUFGMUX
Top or Bottom BUFGMUX
Right-Half BUFGMUX
(2)
(2)
(2)
Location
Location
Location
I0 Input
I1 Input
I0 Input
I1 Input
I0 Input
I1 Input
GCLK0 or GCLK1 or
GCLK12 GCLK13
A
B
C
D
E
F
X0Y2
X0Y3
X0Y4
X0Y5
X0Y6
X0Y7
X0Y8
X0Y9
LHCLK7 LHCLK6
LHCLK6 LHCLK7
LHCLK5 LHCLK4
LHCLK4 LHCLK5
LHCLK3 LHCLK2
LHCLK2 LHCLK3
LHCLK1 LHCLK0
LHCLK0 LHCLK1
X2Y1
X2Y0
X3Y2
X3Y3
X3Y4
X3Y5
X3Y6
X3Y7
X3Y8
X3Y9
RHCLK0 RHCLK1
RHCLK1 RHCLK0
RHCLK2 RHCLK3
RHCLK3 RHCLK2
RHCLK4 RHCLK5
RHCLK5 RHCLK4
RHCLK6 RHCLK7
RHCLK7 RHCLK6
GCLK1 or GCLK0 or
GCLK13 GCLK12
GCLK2 or GCLK3 or
GCLK14 GCLK15
X1Y1
GCLK3 or GCLK2 or
GCLK15 GCLK14
X1Y0
GCLK4 or GCLK5 or
GCLK8 GCLK9
X2Y11
X2Y10
X1Y11
X1Y10
GCLK5 or GCLK4 or
GCLK9 GCLK8
GCLK6 or GCLK7 or
GCLK10 GCLK11
G
GCLK7 or GCLK6 or
GCLK11 GCLK10
H
Notes:
1. See Quadrant Clock Routing for connectivity details for the eight quadrant clocks.
2. See Figure 42 for specific BUFGMUX locations and Figure 44 for information on how BUFGMUX elements drive onto a specific clock line
within a quadrant.
50
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DS312-2 (v1.1) March 21, 2005
Advance Product Specification
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