MEC1322 Datasheet, PDF (406/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
38.8 8042 Emulation CPU_Reset Timing
FIGURE 38-14: CPU_RESET TIMING
t_{d elay}
t _{a c tiv e}
TABLE 38-12: CPU_RESET TIMING PARAMETERS
NAME
DESCRIPTION
MIN
TYP
MAX
UNITS
t_delay
Delay prior to active pulse
14
15
15.5
μs
t_active
Active pulse width
6
8
8.5
μs
Note 38-12 Figure 38-14 and Table 38-12 refer to FIGURE 11-5: CPU_RESET Implementation Diagram on
page 152 in which CPU_RESET is the inverse of ALT_RST# & KRESET.
Note 38-13 The KBRST pin function is the output of CPU_RESET described in Section 11.11.2, "CPU_RESET
Hardware Speed-Up," on page 151.
DS00001719D-page 406
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