Electrical Specifications

32581C

9.3.14Power Management Interface

LED# Cycle time: 1 s ± 0.1 s, 40%-60% duty cycle.

Table 9-41. PWRBTN# Timing Parameters

Symbol

Parameter

Min

Max

Unit

Comments

 

 

 

 

 

 

tPBTNP

PWRBTN# pulse width

16

 

ms

Note 1

tPBTNE

Delay from PWRBTN# events to

14

16

ms

 

 

ONCTL#

 

 

 

 

 

 

 

 

 

 

Note 1. Not 100% tested.

PWRBTN#

 

 

tPBTNP

 

 

 

 

 

tPBTNP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tPBTNE

 

 

 

 

 

 

tPBTNE

 

 

ONCTL#

Figure 9-53. PWRBTN# Trigger and ONCTL# Timing Diagram

Table 9-42. Power Management Event (GPWIO) and ONCTL# Timing Parameters

Symbol

Parameter

Min

Max

Unit

Comments

 

 

 

 

 

 

tPM

Power management event to ONCTL#

 

45

ns

 

 

assertion

 

 

 

 

 

 

 

 

 

 

GPWIOx

tPM

ONCTL#

PWRCNT1

PWRCNT2

Figure 9-54. GPWIO and ONCTL# Timing Diagram

AMD Geode™ SC3200 Processor Data Book

415

Page 415
Image 415
AMD SC3200 manual Power Management Interface, PWRBTN# Timing Parameters, Onctl# Pwrbtn#, ONCTL# PWRCNT1 PWRCNT2