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PDF W83193R-01 Data sheet ( Hoja de datos )
| Número de pieza | W83193R-01 | |
| Descripción | 83.MHZ 3-DIMM CLOCK | |
| Fabricantes | Winbond | |
| Logotipo |  |
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W83193R-01
1.0 GENERAL DESCRIPTION
83.MHZ 3-DIMM CLOCK
The W83193R-01 is a Clock Synthesizer which provides all clocks required for high-speed RISC or
CISC microprocessor such as Intel PentiumPro , AMD or Cyrix. Eight different frequency of CPU and
PCI clocks are externally selectable with smooth transitions.
The W83193R-02/-04 also provides I2C serial bus interface to program the registers to enable or
disable each clock outputs and choose the 0.6% or 1.5% center type spread spectrum.
The W83193R-01 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.
High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30
pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as
maintaining 50¡Ó 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide
better than 0.5V /ns slew rate.
2.0 PRODUCT FEATURES
• Supports Pentium™, Pentium™ Pro, Pentium™ II, AMD and Cyrix CPUs with I2C.
• 4 CPU clocks.
• 12 SDRAM clocks for 3 DIMs.
• 7 PCI synchronous clocks.
• One IOAPIC clock for multiprocessor support.
• Optional single or mixed supply:
(Vdd = Vddq3 = Vddq2 = 3.3V) or (Vdd = Vddq3 = 3.3V, Vddq2 = 2.5V)
• < 250ps skew among CPU and SDRAM clocks.
• < 250ps skew among PCI clocks.
• Smooth frequency switch with selections from 50 MHz to 83.3 MHz CPU.
• I2C 2-Wire serial interface.
• 0.6% or 1.5% center type spread spectrum function to reduce EMI.
• Programmable registers to enable/stop each output and select modes.
(mode as Tri-state, or Normal )
• MODE pin for power Management.
• 48 MHz for USB.
• 24 MHz for super I/O.
• 48-pin SSOP package.
Publication Release Date: May 1998
- 1 - Revision 0.20
1 page  
W83193R-01
5.5 Power Pins
SYMBOL
Vdd
Vddq2
Vddq3
Vss
PRELIMINARY
PIN
1
42, 48
6,14,19, 30, 36
3,9,16,22,27,
33,39,45
FUNCTION
Power supply for Ref [0:1] crystal and core logic.
Power supply for IOAPIC output and CPUCLK[0:3],
either 2.5V or 3.3V.
Power supply for SDRAM, PCICLK and 48/24MHz
outputs.
Circuit Ground.
6.0 FREQUENCY SELECTION
FS2 FS1
00
00
01
01
10
10
11
11
FS0
0
1
0
1
0
1
0
1
FTS = 1 (MHz)
CPU
PCI
61.8 30.9
75 30
83.3 33.3
68.5 34.25
55 27.5
75 37.5
60 30
66.8 33.4
FTS = 0 (MHz)
CPU
PCI
62.4 31.2
78 39
85.8 42.8
69.5 34.74
83.3 41.7
75 32
80 40
50 25
REF,IOAPIC (MHz)
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
Publication Release Date: May 1998
- 5 - Revision 0.20
5 Page 
W83193R-01
PRELIMINARY
8.3 DC CHARACTERISTICS
Vdd = Vddq3 = 3.3V ± 5 %, Vddq2 = 2.375V~2.9V , TA = 0°C to +70°C
Parameter
Symbol Min Typ Max Units
Test Conditions
Input Low Voltage
VIL
0.8 Vdc
Input High Voltage
VIH 2.0
Vdc
Input Low Current
IIL
-66 µA
Input High Current
IIH
5 µA
Output Low Voltage
IOL = 4 mA
VOL
0.4 Vdc All outputs
Output High Voltage
IOH = 4mA
VOH 2.4
Vdc All outputs using 3.3V power
Tri-State leakage Current
Ioz
10 µA
Dynamic Supply Current
for Vdd + Vddq3
Idd3
mA CPU = 66.6 MHz
PCI = 33.3 Mhz with load
Dynamic Supply Current
for Vddq2 + Vddq2b
Idd2
mA Same as above
CPU Stop Current
for Vdd + Vddq3
ICPUS3
mA Same as above
CPU Stop Current
for Vddq2 + Vddq2b
ICPUS2
mA Same as above
PCI Stop Current
for Vdd + Vddq3
IPD3
mA
- 11 -
Publication Release Date: May 1998
Revision 0.20
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet W83193R-01.PDF ] | |
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