CY28322-2 Cypress, CY28322-2 Datasheet - Page 13

• Manufacturer Part Number: CY28322-2
• Description: 133 Mhz Spread Spectrum Clock Synthesizer with Differential CPU Outputs
• Manufacturer: Cypress

Document #: 38-07145 Rev. *B
PWRGD# Timing Diagrams
CLOCK OUTPUTS
VCC W320 CLOCK
GEN
VCC W320 CLOCK
GEN
GND VRM 5/12V
LOCK OUTPUTS
PWRGD# FROM
GND VRM 5/12V
PWRGD# FROM
VCC CPU CORE
PWRGD# FROM
PWRGD# FROM
VCC CPU CORE
NPN
CLOCK STATE
CLOCK STATE
CLOCK VCO
CLOCK VCO
BSEL [1:0]
BSEL [1:0]
PWRGD#
PWRGD#
PWRGD#
PWRGD#
VID [3:0]
VID [3:0]
VRM
VRM
State 0
OFF
OFF
0.2 – 0.3 ms
State 1
delay
State 0
OFF
OFF
PWRGD#
Wait for
Figure 2. CPU Power BEFORE Clock Power
Figure 3. CPU Power AFTER Clock Power
PRELIMINARY
Possible glitch while Clock VCC is coming
up. Will be gone in 0.2–0.3 mS delay.
0.2 -- 0.3 ms
State 1
delay
Sample
BSELS
State 2
PWRGD#
State 2
Wait for
Sample
BSELS
State 3
State 3
ON
ON
ON
ON
CY28322-2
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