AD1987(Rev0) 데이터 시트보기 (PDF) - Analog Devices
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AD1987 Datasheet PDF : 18 Pages
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GENERAL DESCRIPTION
The AD1987 audio codec and SoundMAX® software provides
superior HD audio quality that exceeds Vista Premium perfor-
mance. The AD1987 has eight DACs and four ADCs, three
stereo headphone ports, C/LFE swapping, digital and analog
PCBeep, and S/PDIF output, making the AD1987 the right
choice for desktop PCs where performance is the primary
consideration.
The jack retasking feature on this product supports various con-
figurations including platforms for 7.1 on 5 jacks, 5.1 on 3 jacks,
and front panel jack retasking.
The AD1987 is available in a 48-lead Pb-free frame chip scale
package in both reels and trays. See Ordering Guide on Page 17.
ADDITIONAL INFORMATION
This data sheet provides a general overview of the AD1987
SoundMAX codec’s architecture and functionality. Additional
information on the AD1987 is available in the AD1987 Pro-
grammers Reference Manual. Please contact your local ADI
sales representative for more information. For information on
SoundMAX codecs and software see Analog Devices website at
http://www.analog.com/soundMAX.
JACK CONFIGURATION
The guidelines shown in Table 1 through Table 3 should be
used when selecting ports for particular functions. The symbols
used in this table are defined as: LI = Line Level Input, LO =
Line Level Output, HP = Output capable of driving headphone
load, MIC = Input supports microphones with MIC bias and
boost amplifier.
Table 1. Desktop Applications with Discreet Jacks (Default
Configuration)
Port
HP MIC LO LI
Port A – Front Panel Headphone
xxxx
Port B – Front Panel Microphone x x x x
Port C – Rear Panel Line-In
xxx
Port D – Rear Panel Front/Headphone x
xx
Port E – Rear Panel Microphone
xxx
Port F – Rear Panel Surround-Rear
x
(5.1)
Port G – Rear Panel C/LFE
x
Port H – Rear Panel Surround-
x
Center/Side (7.1)
AD1987
Table 2. Retasking to Support 7.1 Audio on 5 Jacks
Port
HP MIC LO LI
Port A – Front Panel Headphone
xxxx
Port B – Front Panel Microphone x x x x
Port C – Rear Panel Line-In/Surround-
xxx
Center/Side (7.1)
Port D – Rear Panel Front/Headphone x
xx
Port E – Rear Panel Microphone
xxx
Port F – Rear Panel Surround-Rear
x
(5.1)
Port G – Rear Panel C/LFE
x
Table 3. Desktop Applications with Retasking to Support 5.1
Audio on 3 Jacks
Port
HP MIC LO LI
Port A – Front Panel Headphone
xxxx
Port B – Front Panel Microphone x x x x
Port C – Rear Panel Line-In/Surround-
xxx
Rear (5.1)
Port D – Rear Panel Front/Headphone x
xx
Port E – Rear Panel Microphone
xxx
/C/LFE
Rev. 0 | Page 3 of 18 | May 2007
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