MEC1404 Datasheet, PDF (9/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

1.4.2 ESPI HOST SYSTEM BLOCK DIAGRAM
MEC140X/1X
CPU
S0 (Main)
Power
Supply
PECI 3.0
Interface
PCH
SPI Interface
Shared
Flash
Fans or
General
Use
2‐pin Debug
2‐pin Debug
Trace FIFO
Debug Port
LEDs
(3x)
VCC_PWRGD
TACHs (2)
PWMs (8)
32Khz
UART
ICSP or JTAG
TFDP
Breathing PWM
PS/2
PS/2
nRESET_OUT,
nRESET_IN,
RSMRST# (GPIO)
(Optional)
Voltage Monitoring
ADCs (8) (e.g., Thermistors,
Power Supplies)
MEC14xx
32‐Bit PC Embedded
Controller
Voltage Generator
DACs (2) (e.g., DC Controlled
Fans)
VCI_OUT
SYSPWR_PRES
S5 (Suspend)
Power Supply
VCI_OVRD_IN _ACAVCHARGER
VCI_IN[1:0]# _{Power Button(s)}
BGPO
Battery Powered
GPIO
BC‐Link (2x)
KeyScan
SMBus
SPI I/F
SMBus/I2C
PS/2
Mouse
PS/2
Keyboard
Keyboard
Battery
Pack
SMBus/I2C
Device (s)
GPIOs
BC‐Link
Companion
Chip(s)
Private SPI Flash
(accessible on
KeyScan pins)
 2015 - 2016 Microchip Technology Inc.
DS00001956D-page 9