CMI-8738 Ver la hoja de datos (PDF) - C-Media Electronics

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componentes Descripción

Fabricante

CMI-8738

C3DX PCI-Based HRTF 3D Extension Positional Audio Chip

C-Media Electronics 

Ver. 1.2

CMI-8738/PCI-SX AUDIO Specification

101

110

111

9-6

Reserved

5

INTRM

4

BREQ

from accessing the memory.

3

VOICE_EN

2

UART_EN

1

JYSTK_EN

0

16 K

32 K

48 K

Interrupt Mask bit for MCB (Master control block) module interrupt.

0 MCB interrupt disabled.

1 MCB interrupt enabled.

If this bit is set low it will prevent the MCB and DAC/ADC block

0 Bus Master request disabled(power on state)

1 Bus Master request enabled.

This bit enables Legacy Voice device(SB16,FM).

0 Legacy Voice disabled on channel 0.

1 Legacy Voice enabled on channel 0.

This bit enables Legacy UART device.

0 UART disabled

1 UART enabled

This bit enables Legacy Joystick device.

0 Joystick disabled

1 Joystick enabled

Reserved

Channel Format Register

Address 08H

Bit(s) R/W

Name

Description

31-24

VER[7:0]

PCI Audio subversion for internal indentification. “01”

23-19

Reserved

18

FMOFFSET2 When set 1 and Reg. 24H bit7 ‘FMmute=1’,FM PCM will be forced

to DC value 0002H.

17-16

Reserved

15-14

AdcBitLen[1:0] Sample resolution

00

16 Bits per sample . (Default)

01

15 Bits per sample.

10

14 Bits per sample.

11

13 Bits per sample.

13-12

AdcDacLen[1:0] Sample resolution

00

600nSec per bit in a sample.

01

660nSec per bit in a sample.

C-MEDIA ELECTRONICS INC. Tel:886-2-87731100 Fax:886-2-87732211 URL : www.cmedia.com.tw

9

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