Intel G1620T CM8063701448300 Manuale Utente
Codici prodotto
CM8063701448300
Datasheet
1089
PCU – System Management Bus (SMBus)
22
PCU – System Management Bus
(SMBus)
The processor provides a System Management Bus (SMBus) 2.0 host controller. The
host controller provides a mechanism for the processor to initiate communications with
SMBus peripherals (slaves).
host controller provides a mechanism for the processor to initiate communications with
SMBus peripherals (slaves).
The processor can perform SMBus messages with packet error checking (PEC) enabled
or disabled. The actual PEC calculation and checking can be performed in either
hardware or software.
or disabled. The actual PEC calculation and checking can be performed in either
hardware or software.
The SMBus Address Resolution Protocol (ARP) is supported by using the existing host
controller commands through software, except for the Host Notify command (which is
actually a received message).
controller commands through software, except for the Host Notify command (which is
actually a received message).
The programming model of the host controller is combined into two portions: a PCI
configuration portion, and a system I/O mapped portion. All static configuration, such
as the I/O base address, is done using the PCI configuration space. Real-time
programming of the Host interface is done in system I/O space.
configuration portion, and a system I/O mapped portion. All static configuration, such
as the I/O base address, is done using the PCI configuration space. Real-time
programming of the Host interface is done in system I/O space.
22.1
Signal Descriptions
Please see
for additional details.
The signal description table has the following headings:
•
Signal Name: The name of the signal/pin
•
Direction: The buffer direction can be either input, output, or I/O (bidirectional)
•
Type: The buffer type found in
•
Description: A brief explanation of the signal’s function
I
O
I
O
I
O
I
O
I
O
I
O
I
O
O
Platform Control Unit
UAR
T
SMB
iLB
SPI
PMC