YMF754-V ETC, YMF754-V Datasheet - Page 50
YMF754-V
Manufacturer Part Number
YMF754-V
Description
DS-1E
Manufacturer
ETC
Datasheet
1.YMF754-V.pdf
(60 pages)
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8. Multiple AC’97 & Multi-Channel
YMF754
8-1. AC’97 Digital Docking
8-2. 4-Channel Speaker System
DS-1E allows connection with up to two AC’97s, and plays back up to 4-channel PCM data. Therefore, the
following applications can be realized.
AC’97 digital docking can be realized by mounting the secondary AC’97 on the docking station side. Typical
example of digital docking connection between DS-1E and AC’97s is represented in the diagram below.
When digital docking interface is made with the main side (PC side) powered on, but docking station side
powered off, it may be not desirable for the secondary AC’97 that each output signal from the AC-Link is
applied to the secondary AC’97 that remains in powered off state. In order to avoid such a situation, it is
necessary to place an additional isolation buffer on the PC side (or docking station side).
4-channel speaker system can be realized by the connection of DS-1E with two 2-channel AC’97s as
described at “8-1. AC’97 Digital Docking” or using the AC’97 that includes 4-channel D/A converters.
Then, 4-channel PCM data can be played back at one time.
Docking Station Side
DS-1E
PC Side
CMCLK
CBCLK
CSYNC
CSDO
CSDI0
RST#
GPIO2
CSDI1
DOCKEN#
Isolation Buffer
-50-
SDATA_OUT
SDATA_OUT
SDATA_IN
SDATA_IN
DVDD
BIT_CLK
BIT_CLK
RESET#
RESET#
XTL_IN
XTL_IN
SYNC
SYNC
Secondary AC'97
(AC'97 Rev2.1)
Primary AC'97
June 28, 1999
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