Acer 2450, Service Manual

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38 Chapter 1
NOTE: RAMDAC refers to R andom A ccess M emory D igital to A nalog C onverter: the VGA controller chip that
maintains the range of colors and converts data from memory into analog signals for the monitor.
Audio onboard or optional Built-in
Mono or Stereo Stereo
Resolution Wide range (°V80dB ~ +42dB) volume control with 1.5dB
resolution of analog to analog mixer gain
16 bit stereo digital to analog converter
16 bit stereo analog to digital converter
Compatibility HD Audio
Mixed sound source Line-in, CD
Voice channel 8/16-bit, mono/stereo
Sampling rate All DACs support 44.1k/48k/96k/192kHz sample rate
All ADCs support 44.1k/48k/96kHz sample rate
16/20/24-bit S/PDIF-OUT supports 44.1k/48k/96k/192kHz sample
rate
16/20/24-bit S/PDIF-IN supports 44.1k/48k/96kHz sample rate
Internal microphone Yes
Internal speaker / Quantity Yes/2
Video Interface
Item Specification
Chipset
Built-in Intel
®
945GM for UMA models
NVIDIA
®
GeForce
®
Go 7600 (72MV) for discrete models
Package 35.5 mm x 40 mm 1257 pin mBGA
Interface internal PCIE
Supports ZV (Zoomed Video) port Yes
Memory Interface 64-bit
Memory Bandwidth(GB/sec) 5.6
Fill Rate (Gpixels/sec) 1.4
Vertices/Second (Millions) 260
Memory Data Rate (MHz) 700
RAMDACs (MHz) 400
Video Memory
Item Specification
Chipset
Built-in Intel
®
945GM for UMA models
NVIDIA
®
GeForce
TM
Go 7600 for discrete models
Memory size 128MB/256MB (256MB for Aspire 5650 only)
Interface GDDR2
USB Port
Item Specification
Chipset Built-in ICH7M
USB Compliancy Level 2.0
OHCI USB 1.1 and USB 2.0 Host controller
HD Audio Interface
Item Specification