W215B - Notebook PC system Frequency Generator

Cypress Semiconductor

W215B Datasheet Preview — Preview of W215B PDF

Datasheet Details

Part number	W215B
Manufacturer	Cypress Semiconductor
File Size	221.62 KB
Description	Notebook PC system Frequency Generator
Datasheet	W215B_CypressSemiconductor.pdf

W215B Product details

Description

W215B CPU Outputs 0 through 3: These four CPU outputs are controlled by the CPU_STOP# control pin.Output voltage swing is controlled by voltage applied to VDDQ2. PCI Bus Outputs 0 through 5: These six PCI outputs are controlled by the PCI_STOP# control pin.Output voltage swing is controlled by voltage applied to VDDQ3. Free Running PCI Output: Unlike PCI0:5 outputs, this output is not controlled by the PCI_STOP# control pin.Output voltage swing is controlled by voltage applied to VDDQ3. SDR

Features

Generates system clocks for CPU, IOAPIC, SDRAM, PCI, USB plus 14.318 MHz (REF0:1).
MODE input pin selects optional power management input control pins (reconfigures pins 26 and 27).
Two fixed outputs separately selectable as 24-MHz or 48-MHz (default = 48-MHz).
VDDQ3 = 3.3V±5%, VDDQ2 = 3.3V±5%.
Uses external 14.318-MHz crystal.
Available in 48-pin TSSOP (6.1-mm).
10Ω CPU output impedance Table 1. Pin Selectable Frequency 95/100_SEL.

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Published: Jul 1, 2007 |