ICS844003I-01 Datasheet, PDF (4/12 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844003I-01
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
FREQUENCY SYNTHESIZER
TABLE 3C. OUTPUT BANK CONFIGURATION SELECT FUNCTION TABLE
Inputs
DIV_SELA1 DIV_SELA0
0
0
0
1
1
0
1
1
Outputs
QA, nQA
÷1
÷2
÷3
÷4 (default)
Inputs
DIV_SELB1 DIV_SELB0
0
0
0
1
1
0
1
1
Outputs
QBx, nQBx
÷2
÷4
÷5
÷8 (default)
TABLE 3D. FEEDBACK DIVIDER CONFIGURATION SELECT
FUNCTION TABLE
Inputs
FB_DIV Feedback Divide
0
÷25
1
÷32
TEST_CLK
CLK_ENx
nQA0,
nQB0:nQB1
QA0,
QB0:QB1
Disabled
Enabled
FIGURE 1. CLK_EN TIMING DIAGRAM
TABLE 3E. CLK_ENA SELECT FUNCTION TABLE
Inputs
CLK_ENA
0
1
Outputs
QA0
nQA0
LOW
HIGH
Active
Active
TABLE 3F. CLK_ENB SELECT FUNCTION TABLE
Inputs
CLK_ENB
0
1
Outputs
QB0:QB1
nQB0:nQB1
LOW
HIGH
Active
Active
844003AGI-01
www.icst.com/products/hiperclocks.html
4
REV. A MAY 31, 2005