DMP Electronics eBOX-3350MX-AP Manual do Utilizador descarregar pdf (Página 67)

386SX Single Chip PC Jan Yin Chan Electronics Co.,LTD.

DM&P M6117D : System on a chip

Page 66

Jan Yin Chan Electronics Co,. LTD. M6117D 386SX Single Chip PC

8F-1,No.22,Wuchyuan 2RD.,Hsin Chuang city Taipei Hsien, Taiwan, R.O.C. Tel: 886-(02) 2298-0770 Fax: (02) 2299-1883

5.6.3 Power management example

In the following example, use

LPOETW( INDEX#, DATA) to write chipset

 configure register and

LPORTR( INDEX#) to read chipset

 configure register

Example 1

: Mode Translation

/* The DOZE, STANDBY, SUSPEND modes are defined by the BIOS */

LPORTW(056h,084h); /* Enable SMI, PMU and set the system state at ON mode */

LPORTW(057h,008h); /* Monitor IRQs in this example */

LPORTW(059h,020h); /* Enable MODE timer */

LPORTW(064h,067h); /* Set the time base of the MODE timer as 60 min */

/* SMIJ will be generated if no IRQ is active during 60 min */

/* Wait for the assertion of SMIACKJ */

LPORTW(056h,004h); /* Deassert SMIJ */

LPORTR(05Bh); /* To read the SMI cause */

/* It should be the MODE timer time-out in this example */

LPORTR(06Ah); /* Read the time-out status */

/* Start SMI routine */

LPORTW(059h,000h); /* Clear MODE time-out event */

LPORTW(05Ah,080h); /* Set IN(standard input) as a wake-up event */

LPORTW(056h,084h); /* Enable SMI again */

DB 0D6h ; /* End SMI routine */

DB 0E6h ; /* RETPM */

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DMP Electronics eBOX-3350MX-AP Manual do Utilizador Página 67