S4406 AMCC (Applied Micro Circuits Corp), S4406 Datasheet

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S4406

Manufacturer Part Number
S4406
Description
S440612-Output BiCMOS PLL Clock Generator(12BiCMOS)
Manufacturer
AMCC (Applied Micro Circuits Corp)
Datasheet
DEVICE SPECIFICATION
FEATURES
• Generates outputs from 10 MHz to 66 MHz
• Four groups of three outputs (12 outputs total)
• Eight user-selectable output functions for each
• TTL compatible outputs, with <1.5-ns edge rates
• Performs clock doubling, dividing, invert, lead/lag
• Internal VCO running between 160 to 266 MHz
• 1.0 BiCMOS technology
• Output skew less than 500 ps
• 52 PQFP package
APPLICATIONS
• High-performance microprocessor systems
• CMOS ASIC systems
• Backplane clock deskew and distribution
• Compatible with Intel’s Pentium™ processor
Figure 1. S4406 Block Diagram
Applied Micro Circuits Corporation
6195 Lusk Blvd., San Diego, CA 92121 • (619) 450-9333
12-OUTPUT BiCMOS PLL CLOCK GENERATOR
group
placement
+5V
+5V
0V
0V
REFCLK
Digital
Analog
FBCLK
0 MS2,1,0
1 MS2,1,0
2 MS2,1,0
3 MS2,1,0
TSTEN
PHASE
DETECTOR
CHARGE
PUMP
I
I
S
0
1
3
3
3
3
VCO
MUX
÷ 2
GENERAL DESCRIPTION
The S4406 BiCMOS clock generator provides 12 TTL
outputs with less than 500 ps of skew. Implemented
in AMCC’s 1.0
PLL and divider/delay selector logic allow the user to
individually tailor the (4) TTL output groups to the
system’s needs. The internal VCO can operate be-
tween 160 to 266 MHz, and the programmability al-
lows the user to generate output clocks in the 20–66
MHz range.
The S4406 offers the user the ability to select the
appropriate phase and frequency relationship for
each of the four groups of three TTL clock outputs.
In addition to clock doubling and inversion functions,
the S4406 allows any output groups to lead or lag the
others by the minimum phase delay of 3.75–6.25 ns.
GENERATION
SELECTION 1
SELECTION 2
SELECTION 3
SELECTION 4
BY 2 OR 4
DELAY
DIVIDE
MODE
MODE
MODE
MODE
LOGIC
disable
disable
disable
disable
BiCMOS technology, the internal
FILTER
0 FOUT 0
0 FOUT 1
0 FOUT 2
1 FOUT 0
1 FOUT 1
1 FOUT 2
2 FOUT 0
2 FOUT 1
2 FOUT 2
3 FOUT 0
3 FOUT 1
3 FOUT 2
S4406
Page
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S4406 Summary of contents

Page 1

... The S4406 offers the user the ability to select the appropriate phase and frequency relationship for each of the four groups of three TTL clock outputs. In addition to clock doubling and inversion functions, the S4406 allows any output groups to lead or lag the others by the minimum phase delay of 3.75–6.25 ns. PHASE DETECTOR ...

Page 2

... This system re- quirement can be met using the S4406 by setting the mode select pins for the first group of outputs (0MS2,1,0) to 111, the second group (1MS2,1,0) to Table 1 ...

Page 3

... BOARD LAYOUT CONSIDERATIONS MIN PHASE • The S4406 chips are sensitive to noise on the Ana- DELAY log +5 V and Filter pins. Care should be taken during 3.750 ns board layout for optimum results ...

Page 4

... S4406 PIN DESCRIPTIONS Input Signals REFCLK. Frequency reference supplied by the user that, along with the output tied to the FBCLK input, determines the frequency of the outputs. Also re- places the VCO output when TSTEN is high (after first divide-by-two stage in divider phase control logic) ...

Page 5

... - Min - Min, 4MS2,3MS2,1 Min 2.4V Other Max 4MS2,3MS2,1 Min 0.5V Other Max, V OUT = Max C LOAD = MHz S4406 Typ 1 Min Max Units 2.0 V 0.8 V -0.8 -1.2 V 2.4 V 2.0 V ...

Page 6

... S4406 ABSOLUTE MAXIMUM RATINGS TTL Supply Voltage VCC (VEE = 0) TTL Input Voltage (VEE = 0) Operating Temperature Operating Junction Temperature TJ Storage Temperature RECOMMENDED OPERATING CONDITIONS Parameter TTL Supply Voltage (VCC) Operating Temperature Junction Temperature Table 3. AC Specifications Symbol f VCO f REF t IRF MPW REF ...

Page 7

... PINOUT/ORDERING INFORMATION Figure 8. S4406 Pinout D GND D GND REFCLK FBCLK 0MS0 0MS1 0MS2 NC D +5V 0FOUT0 0FOUT1 0FOUT2 DGND Ordering Information AMCC clock driver products are available in several output skew and shipping configurations. The order number is formed by a combination of: S4406 Q Example: S4406Q–66/D 52-pin PQFP package, 66 MHz, shipped dry packed in the standard matrix tray ...

Page 8

Lusk Blvd., San Diego, CA 92121 AMCC reserves the right to change specifications for this product in any manner without notice, and substitute devices manufactured to higher grade levels than ordered. AMCC is a registered trademark of Applied Micro ...

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