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W83194R-17A, W83194R-37, W83194R-39

Table of contents:
Info of W83194R-17A
Info of W83194R-37
Info of W83194R-39

W83194R-17A, W83194R-37, W83194R-39 Selling Leads, Datasheet

MFG:Winbond Package Cooled:Winbond D/C:09+

W83194R-17A, W83194R-37, W83194R-39 Picture

W83194R-17A, W83194R-37, W83194R-39 Datasheet download

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Part Number: W83194R-17A

MFG: Winbond

Package Cooled: Winbond

D/C: 09+

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W83194R-17A General Description

The W83194R-17/-17A is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumII, PentiumPro , AMD or Cyrix. Eight different frequency of CPU, AGP and PCI clocks are externally selectable with smooth transitions. The W83194R-17/-17A provides AGP clocks especially for clone chipset. The highest CPU frequency provided by the W83194R-17 is up to 100MHz, but the one of W83194R-17A is up to 133MHz.

The W83193R-17/-17A provides I²C serial bus interface to program the registers to enable or disable each clock outputs and choose the 0.5% or 1.5% center type spread spectrum to reduce EMI.

The W83194R-17/-17A 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.

W83194R-17A Maximum Ratings

Symbol	PARAMETER	RATING
V_dd , V_IN	Voltage on any pin with respect to GND	-0.5V to +7.0V
T_STG	Storage Temperature	-65° C to +150° C
T_B	Ambient Temperature	-55° C to +125° C
T_A	Operating Temperature	0°C to + 70°C

W83194R-17A Features

· Supports Pentium™, Pentium™ Pro, Pentium™II, AMD and Cyrix CPUs with I²C.
· 4 CPU clocks
· 12 SDRAM clocks for 3 DIMMs
· Two AGP clocks
· 6 PCI synchronous clocks.
· Optional single or mixed supply:
(Vdd = Vddq3 = Vddq2 = Vddq2b = 3.3V) or (Vdd =Vddq2 = Vddq3 = 3.3V, Vddq2b = 2.5V)
· Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns, AGP to CPU sync. skew 0 ns (250 ps)
· Smooth frequency switch with selections from 60 MHz to 133 MHz CPU
· I²C 2-Wire serial interface and I²C read back
· ··0.5% 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

W83194R-17A Connection Diagram

W83194R-37 General Description

The W83194R-37/-58 is a Clock Synthesizer for VIA chipset. W83194R-37 provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumPro, AMD or Cyrix. Eight different frequencies of CPU, W83194R-58 provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumII and also provides 16 different frequencies of CPU clocks by software setting (additional register0 bit2). AGP and PCI clocks are externally selectable with smooth transitions. The W83194R-37/-58 provides AGP clocks especially for clone chipset, and makes SDRAM in synchronous frequency with CPU or AGP clocks.

The W83194R-37/-58 provides I2C serial bus interface to program the registers to enable or disable each clock outputs and choose the 0.25%, 0.5% or 0.5%,1.5% center type spread spectrum to reduce EMI.
The W83194R-37/-58 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 1V /nS slew rate into 30 pF loads. CPU CLOCK outputs typically provide better than 1V /nS slew rate into 20 pF loads as maintaining 50 ±5% duty cycle. The fixed frequency outputs as REF, 24 MHz, and 48 MHz provide better than 0.5V /nS slew rate.

W83194R-37 Maximum Ratings

PARAMETER	SYMBOL	RATING
Voltage on any pin with respect to GND	V_DD, V_IN	-0.5V to +7.0V
Storage Temperature	T_STG	-65° C to +150° C
Ambient Temperature	T_B	-55° C to +125° C
Operating Temperature	T_A	0° C to +70° C

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.

W83194R-37 Features

· Supports PentiumÔ, PentiumÔ Pro, PentiumÔ II, AMD and Cyrix CPUs with I2C.
· 4 CPU clocks
· 12 SDRAM clocks for 3 DIMs
· Two AGP clocks
· 6 PCI synchronous clocks.
· Optional single or mixed supply:
(V_DD= V_DDq3 = V_DDq2 = V_DDq2b = 3.3V) or (V_DD = V_DDq3 = V_DDq2 = 3.3V, V_DDq2b = 2.5V)
· Skew form CPU to PCI clock -1 to 4 nS, center 2.6 nS, AGP to CPU sync. skew 0 nS (250 pS)
· SDRAM frequency synchronous to CPU or AGP clocks
· Smooth frequency switch with selections from 60 to 100 MHz CPU (-37) and 66 to 150 MHz (-58)
· I2C 2-Wire serial interface and I2C read back
· ±0.5% or ±1.5% (-37) and 0.25%, 0.5% (-58) center type spread spectrum 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
· Packaged in 48-pin SSOP

W83194R-37 Connection Diagram

W83194R-39 General Description

The W83194R-39/-39A is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel Pentium II. W83194R-39 provides eight different frequency of CPU and PCI clocks and W83194R-39A provides sixteen CPU/PCI frequencies which are externally selectable with smooth transitions. W83194R-39/-39A also provides 13 SDRAM clocks controlled by the none-delay buffer_in pin.

The W83194R-39/-39A accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. Spread spectrum built in at ¡Ó0.5% or ¡Ó0.25% to reduce EMI. Programmable stopping individual clock outputs and frequency selection through I²C interface. The device meets the Pentium power-up stabilization, which requires CPU and PCI clocks be stable within 2 ms after power-up. It is not recommend to use the dual function pin for the slots(ISA, PCI, CPU, DIMM). The add on cards may have a pull up or pull down.

High drive six PCI and thirteen SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. Two 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.

W83194R-39 Maximum Ratings

Symbol	PARAMETER	RATING
V_dd , V_IN	Voltage on any pin with respect to GND	-0.5V to +7.0V
T_STG	Storage Temperature	-65° C to +150° C
T_B	Ambient Temperature	-55° C to +125° C
T_A	Operating Temperature	0°C to + 70°C

W83194R-39 Features

· Supports PentiumÔ II CPU with I²C.
· 2 CPU clocks (one free-running CPU clock)
· 13 SDRAM clocks for 3 DIMs
· 6 PCI synchronous clocks
· One IOAPIC clock for multiprocessor support
· Optional single or mixed supply:
(Vddq1=Vddq2 = Vddq3 = Vddq4 = VddL1 =VddL2= 3.3V) or (Vddq1= Vddq2 = Vddq3=Vddq4 = 3.3V, VddL1 = VdqL2 = 2.5V)
· < 250ps skew among CPU and SDRAM clocks
· < 250ps skew among PCI clocks
· < 5ns propagation delay SDRAM from buffer input
· Skew from CPU(earlier) to PCI clock -1 to 4ns, center 2.6ns.
· Smooth frequency switch with selections from 50 MHz to 133 MHz CPU
· I²C 2-Wire serial interface and I2C read back

W83194R-39 Connection Diagram

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