MEC1322 datasheet(273/456 Pages) MICROCHIP

273 / 456 page

 2014 - 2015 Microchip Technology Inc.

DS00001719D-page 273

MEC1322

22.6

Host Interface

The registers defined for the SMBus Interface are accessible as indicated in Section 22.12, "SMBus Registers".

22.7

DMA Interface

This block is designed to communicate with the Internal DMA Controller. This feature is defined in the SMBus Controller

Core Interface specification (See Ref [1]).

Note:

For a description of the Internal DMA Controller implemented in this design see Chapter 21.0, "Internal DMA

Controller".

22.8

Power, Clocks and Reset

This section defines the Power, Clock, and Reset parameters of the block.

22.8.1

POWER DOMAINS

22.8.2

CLOCK INPUTS

22.8.3

RESETS

22.9

Interrupts

22.10 Low Power Modes

The SMBus Interface may be put into a low power state by the chip’s Power, Clocks, and Reset (PCR) circuitry.

22.11 Description

22.11.1

SMBUS CONTROLLER CORE

The MEC1322 SMBus Interface behavior is defined in the SMBus Controller Core Interface specification (See Ref [1]).

TABLE 22-2:

SIGNAL TO PIN NAME LOOKUP TABLE

Block Name

Pin Name

Description

SMBx_DATn

I2Cx_DATn

SMBus Controller x Port n Data

SMBx_CLKn

I2Cx_CLKn

SMBus Controller x Port n Clock

TABLE 22-3:

POWER SOURCES

Name

Description

VCC1

This power well sources the registers and logic in this block.

TABLE 22-4:

CLOCK INPUTS

Name

Description

48 MHz Ring Oscillator

This is the clock signal drives the SMBus controller core. The core also

uses this clock to generate the SMB_CLK on the pin interface.

16MHz_Clk

This is the clock signal is used for baud rate generation.

TABLE 22-5:

RESET SIGNALS

Name

Description

VCC1_RESET

This reset signal resets all of the registers and logic in the SMBus

controller core.

TABLE 22-6:

EC INTERRUPTS

Source

Description

SMB

SMBus Activity Interrupt Event

MEC1322 датащи(PDF) 273 Page - Microchip Technology

MEC1322 датащи(HTML) 273 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL