参数资料
型号: YMF715E-S
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封装: SQFP-100
文件页数: 27/53页
文件大小: 455K
代理商: YMF715E-S
YMF715E
May 21, 1998
-33-
Notice)
1) Set D7, D6, D4 and D3 bits to “0”.
2) In the power save modes 1, 2, the OUTL/R pins will keep the VREF voltage. In the power down
mode, VREF voltage slowly decays to ground on transition into this mode, and quickly returns to
VREF on transition from this mode. During these modes (power save/down), master volume is
automatically muted, so all audio sources cannot be heard. After resuming these modes, master
volume is still muted.
System control (R/W):
Index
D7
D6
D5
D4
D3
D2
D1
D0
02h
SBHE
-
YMODE1 YMODE0
-
IDSEL1
IDSEL0
VZE
SBHE...
When AT-bus is used, set to “0” and set to “1” in case of XT-bus.
YMODE1-0...
3D Enhancement mode according to the application can be selected
by these two bits as follows.
YMODE1
YMODE0
3D Enhancement mode
0
Desktop mode
0
1
Notebook PC mode (1)
1
0
Notebook PC mode (2)
1
Hi-Fi mode
IDSEL1, IDSEL0...
These two bits specify the DSP version of Sound Blaster compatible
portion.
The different return value of DSP command E1h (Get DSP version
number) of Sound Blaster Pro is got by these bits in.
1st byte
2nd byte
IDSEL1
IDSEL0
(major ver)
(minor ver)
0
03h
01h
0
1
02h
01h
1
0
01h
05h
1
00h
VZE...
I
2S audio format can be fed to BCLK_ZV, LRCK_ZV, SIN_ZV pins
of OPL3-SA3 by setting this bit to “1” regardless of the /EXTEN,
when Zoomed Video port is in use.
default : 00h
Notice)
Input signals, BCLK_ZV and LRCK_ZV pins which appear on SEL=4 or 5 mode, should be
oscillated, when VZE=1.
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