MEC1404 Datasheet, PDF (519/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

43.17 LPC Interface Timing
43.17.1 LPC LCLK TIMING
FIGURE 43-14: LPC CLOCK TIMING
LCLK
t1
t4
t5
t3
t2
MEC140X/1X
TABLE 43-17: LPC CLOCK TIMING PARAMETERS
Name
t1
Period
t2
High Time
t3
Low Time
t4
Rise Time
t5
Fall Time
Description
MIN TYP MAX
Units
30
57.3
nsec
(Note 4
3-14)
11
3
Note 43-14 The standard clock frequency supported is 33MHz (max 33.3 ns period). Setting the Handshake bit
in the Host Interface allows the LPC to support 19.2 MHz (max 45.8 ns period) and 24 MHz (max
57.3 ns period) PCI clock rates.
43.17.2 LPC RESET# TIMING
FIGURE 43-15: RESET TIMING
LR ES ET #
t1
TABLE 43-18: RESET TIMING PARAMETERS
Name
t1
LRESET# width
Description
MIN TYP MAX
1
Units
ms
 2015 - 2016 Microchip Technology Inc.
DS00001956D-page 519