MX86251 查看數據表（PDF） - Macronix International

零件编号

产品描述 (功能)

比赛名单

MX86251

3D graphic chipset

Macronix International 

MX86251

ROM BIOS Interface Pins:

Pin Name Pin No. Type

ROMOE# 42

O

Description

This output is ROMOE#. It may be connected to either one or both of the BIOS

ROM chip select and output enable pins directly.

Internal VCG Related Interface Pins:

Pin Name Pin No. Type

XI

157

I

XO

158

O

Description

This input is used as a Reference Frequency Input for internally imple mented

oscillator.

An external crystal or oscillator of 14.318Mhz may be used. If an external

crystal is used, it must be connected between XIN and XOUT. If an external

oscillator is used, it must connect to XIN. In this case, the XOUT must be left

open.

This is used as a Reference Frequency output for internally implemented

oscillator. If an external crystal is used, it must be connected between XIN and

XOUT. If an external oscillator is used, the XOUT must be left open.

Internal RAMDAC Related Interface Pins:

Pin Name Pin No. Type

SVREF

4

I

SCOMP 161

I

SIREF

2

I

SR

206

O

SG

207

O

SB

208

O

Description

This pin is the Voltage Reference of 1.2V for internal DAC and Monitor Sence

logic. It must be connected with a 0.1u capacitor to AVCC of RAMDAC.

This pin is the Compensation input for internal DAC. It must be connected with a

0.1u capacitor to AVCC of RAMDAC.

This pin is the Current Reference.

This pin is the analog output of the pixel color Red component to monitor. It has

a voltage level of 0.0V(blank) to 0.7V(full scale) when terminated with 75 ohm

double loads.

This pin is the analog output of the pixel color Green component to monitor. It

has a voltage level of 0.0V(blank) to 0.7V(full scale) when terminated with

75 ohm double loads.

This pin is the analog output of the pixel color Blue component to monitor. It has

a voltage level of 0.0V(blank) to 0.7V(full scale) when terminated with 75 ohm

double loads.

P/N:PM0476

REV. 1.2 , FEB 11, 1998

18

Share Link: