Cypress Semiconductor W195B
This pin also serves as the select strap to determine device operating frequency as described in Table 1. It can be used as an external 14.318MHz crystal connection or as an external reference frequency input.- Min Voltage : 3.135V
- Max Voltage : 3.465V
- Max Operating Temp : 70°C
- Min Operating Temp : 0°C
Source:
Octopart
| Part No. | W195B |
|---|---|
| Datasheet | W195B Download |
| Manufacturer |  Cypress Semiconductor |
| Description | Frequency Generator for Integrated Core Logic |
| Buy | Stock & Price |
FEATURES
● Maximized EMI suppression using Cypress’s Spread Spectrum Technology● Low jitter and tightly controlled clock skew
● Highly integrated device providing clocks required for CPU, core logic, and SDRAM
● Two copies of CPU clocks
● Nine copies of SDRAM clocks
● Eight copies of PCI clock
● One copy of synchronous APIC clock
● Two copies of 66-MHz outputs
● Two copies of 48-MHz outputs
● One copy of selectable 24- or 48-MHz clock
● One copy of double strength 14.31818-MHz reference clock
● Power-down control
● I2C interface for turning off unused clocks SDRAM, APIC, 48MHz Output Skew: ........................ 250 ps PCI Output Skew: ........................................................500 ps CPU to SDRAM Skew (@100 MHz): ..................4.5 to 5.5 ns CPU to 3V66 Skew (@ 66 MHz): ....................... 7.0 to 8.0 ns 3V66 to PCI Skew (3V66 lead):.......................... 1.5 to 3.5 ns PCI to APIC Skew: ....................................................± 0.5 ns Table 1. Fre...
