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MEC1322 датащи(PDF) 274 Page - Microchip Technology

номер детали MEC1322
подробное описание детали  Keyboard and Embedded Controller for Notebook PC
PDF  456 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MEC1322 датащи(HTML) 274 Page - Microchip Technology

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MEC1322
DS00001719D-page 274
 2014 - 2015 Microchip Technology Inc.
22.11.2
PHYSICAL INTERFACE
The SMBus Interface has two physical ports, selected by the PORT SEL [3:0] bits in the Configuration Register as
described in Ref [1].
Note 1:
SMBus controller 0 uses port 0 and port 1. SMBus controllers 1-3 use port 0.
2:
The buffer type for these pins must be configured as open-drain outputs in the GPIO Configuration registers
associated with the GPIO signals that share the ports.
22.12 SMBus Registers
The registers listed in the SMBus Core Register Summary table in the SMBus Controller Core Interface specification
(Ref [1]) are for a single instance of the SMBus Controller Core. The addresses of each register listed in this table are
defined as a relative offset to the host “Base Address” defined in the following table:
Note 22-1
The Base Address indicates where the first register can be accessed in a particular address space
for a block instance.
TABLE 22-7:
EC-ONLY REGISTER BASE ADDRESS TABLE
Block Instance
Instance
Number
Host
Address Space
Base Address (
Note 22-1)
SMBus Controller
0
EC
32-bit internal
address space
4000_1800h
SMBus Controller
1
EC
32-bit internal
address space
4000_AC00h
SMBus Controller
2
EC
32-bit internal
address space
4000_B000h
SMBus Controller
3
EC
32-bit internal
address space
4000_B400h



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