SIO1007 datasheet(40/108 Pages) MICROCHIP

Nome de Peças	SIO1007

Descrição Electrónicos	LPC Super I/O LPC IrDA Hot Docking Chip with UART

PDF	108 Pages

Scroll/Zoom	100%

Fabricante Electrônico	MICROCHIP [Microchip Technology]

Página de início	http://www.microchip.com

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40 / 108 page

SIO1007

DS00002020A-page 40

 2005 - 2015 Microchip Technology Inc.

11.0

POWER MANAGEMENT

Power management capabilities are provided for the following logical devices: UART 1, and UART 2. For each logical

device, two types of power management are provided: direct powerdown and auto powerdown.

11.1

UART Power Management

Direct power management is controlled by CR02. Refer to the Configuration section for more information.

Auto Power Management is enabled by the UART1 and UART2 enable bits in CR07. When set, these bits allow the

following auto power management operations:

The transmitter enters auto powerdown when the transmit buffer and shift register are empty.

The receiver enters powerdown when the following conditions are all met:

Receive FIFO is empty

The receiver is waiting for a start bit.

11.1.1

EXIT AUTO POWERDOWN

The transmitter exits powerdown on a write to the XMIT buffer. The receiver exits auto powerdown when RXDx changes

state.

Note:

While in powerdown the Ring Indicator interrupt is still valid and transitions when the RI input changes.

SIO1007 Folha de dados(PDF) 40 Page - Microchip Technology