MEC1404 Datasheet, PDF (8/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
1.4 System Block Diagrams
Note:
1.4.1
Not all features shown are available on all devices. Refer to Products on page 3 for a list of the features by
device.
LPC HOST SYSTEM BLOCK DIAGRAM
CPU
S0 (Main)
Power
Supply
PECI 3.0
Interface
VCC_PWRGD
Fans or
General
Use
TACHs (2)
PWMs (8)
PCH
A20M, KBRST,
nRESET_OUT,
nRESET_IN, SMI,
SMBus
SCI, SIRQ,
RSMRST# (GPIO)
2‐pin Debug
32Khz
UART
2‐pin Debug ICSP or JTAG
Trace FIFO
Debug Port
TFDP
Breathing PWM
MEC14xx
32‐Bit PC Embedded
Controller
LEDs
PS/2
(3x)
KeyScan
SMBus
SMBus/I2C
PS/2
SPI I/F
PS/2
Mouse
PS/2
Keyboard
Keyboard
Battery
Pack
SMBus/I2C
Device(s)
SPI Interface
(3.3V Only)
Shared
Flash
Voltage Monitoring
ADCs (8) (e.g., Thermistors,
Power Supplies)
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)
GPIOs
BC‐Link
Companion
Chip(s)
Private SPI Flash
(accessible on
KeyScan pins)
DS00001956D-page 8
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