W83791D Information Storage Devices, Inc, W83791D Datasheet - Page 20

• Manufacturer Part Number: W83791D
• Description: Hardware Monitor With Speech Synthesizer And Asf Functions
• Manufacturer: Information Storage Devices, Inc

6.3.4
from 510~1K ohm and bipolar could be a low power NPN bipolar with £ ] of 120 - 160 . Usually, an 8050D
transistor is appropriate. The spec of speaker is 8
C is decouple capacitor and is usually 200p- 0.01uF
EVTTRAP 1: 5
SLOTOCC#
Speech output pin is a 8 bit Current D/A converter, with which loading is needed. The resistor could range
Speaker Output
Internal programmable
DATA ADDR CLK CTRL MODE EOP
DATA ADDR CLK CTRL MODE EOP
SPK
trigger
Speech Synthesizer
Figure 4. Speech Function Diagram
(W83791D)
EEPROM
R
Hardware monitor status
Figure. 5
trigger
. Besides, SPK can also connect to AC97 codec chip Line_Out.
C
13
8050D, NPN transistor
8 ohm speaker
DATA ADDR CLK CTRL MODE EOP
Publication Release Date: Aug, 2001
9-bit DAC
EEPROM
W83791D
Preliminary
Revision 0.41
SPK/LED