ICS87608I Datasheet, PDF (4/12 Pages) List of Unclassifed Manufacturers – LOW VOLTAGE/LOW SKEW, 1:8 PCI/PCI-X ZERO DELAY CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
TABLE 3A. OUTPUT CONTROL PIN FUNCTION TABLE
Inputs
MR
1
0
QA0:QA3
LOW
Active
Outputs
QB0:QB3, FB_OUT, REF_OUT
LOW
Active
ICS87608I
LOW VOLTAGE/LOW SKEW, 1:8 PCI/PCI-X
ZERO DELAY CLOCK GENERATOR
TABLE 3B. OPERATING MODE FUNCTION TABLE
Inputs
PLL_SEL
0
1
Operating Mode
Bypass
PLL
TABLE 3C. PLL INPUT FUNCTION TABLE
XTAL_SEL
0
1
Inputs
PLL Input
REF_IN
XTAL Oscillator
TABLE 3D. CONTROL FUNCTION TABLE
Inputs
PLL_SEL =1
Outputs
Frequency
FBDIV_
SEL1
0
FBDIV_
SEL0
0
Bank B
DIV_
SELB1
0
Bank B
DIV_
SELB0
0
Bank A
DIV_
SELA1
0
Bank A
DIV_
SELA0
0
Reference
Frequency
Range (MHz)
16.67 - 41.67
QX0:QX3
x4
QX0:QX3
(MHz)
FB_OUT
(MHz)
66.68 - 166.68 16.67 - 41.67
0
0
0
1
0
1
16.67 - 41.67
x3
50 - 125 16.67 - 41.67
0
0
1
0
1
0
16.67 - 41.67
x2
33.34 - 83.34 16.67 - 41.67
0
0
1
1
1
1
16.67 - 41.67
x1
16.67 - 41.67 16.67 - 41.67
0
1
0
0
0
0
12.5 - 31.25
x 5.33
66.63 - 166.56 12.5 - 31.25
0
1
0
1
0
1
12.5 - 31.25
x4
50 - 125
12.5 - 31.25
0
1
1
0
1
0
12.5 - 31.25
x 2.667 33.34 - 83.34 12.5 - 31.25
0
1
1
1
1
1
12.5 - 31.25
x 1.33
16.63 - 41.56 12.5 - 31.25
1
0
0
0
0
0
10 - 25
x 6.667 66.67 - 166.68 10 - 25
1
0
0
1
0
1
10 - 25
x5
50 - 125
10 - 25
1
0
1
0
1
0
10 - 25
x 3.33
33.30 - 83.25
10 - 25
1
0
1
1
1
1
10 - 25
x 1.66
16.60 - 41.50
10 - 25
1
1
0
0
0
0
8.33 - 20.83
x8
66.64 - 166.64 8.33 - 20.83
1
1
0
1
0
1
8.33 - 20.83
x6
50 - 125
8.33 - 20.83
1
1
1
0
1
0
8.33 - 20.83
x4
33.32 - 83.32 8.33 - 20.83
1
1
1
1
1
1
8.33 - 20.83
x2
16.66 - 41.66 8.33 - 20.83
NOTE: VCO frequency range for all configurations above is 200MHz to 500MHz.
87608AYI
www.icst.com/products/hiperclocks.html
4
REV. B MARCH 11, 2005