YDA137 Datasheet, PDF (6/20 Pages) YAMAHA CORPORATION – D- 2 STEREO 5W DIGITAL AUDIO POWER AMPLIFIER

■Mode setting and error detection
YDA137
Operating Mode
I
I
I
I
O
O
O
O
O
L
X
X
X
H
WL
WL
WL
WL
Sleep mode
H
L
X
X
H
WL
WL
RF
RF
Mute mode
H
H
L
H
H
PM
PM
RF
RF
2 channel digital amplifier output mode
HH
L
L
H PM
×^*1
RF
RF
2 channel digital amplifier output monaural mode
H H H H H WL WL AO AO 2 channel headphone output mode
H
H
H
L
H
WL WL
AO
×^*1
2 channel headphone output monaural mode
H
X
X
X
L
WL
WL WL
WL
Output protection condition
Note：
"H" : CMOS logic "H" level
"L" : CMOS logic "L" level
"WL" : Weak Low （weak pull-down）
"PM" : PWM pulse output
"Z" : Hi-impedance
"RF" : Reference level output
"AO" : Audio signal output
*1: “×” in the output terminal means undefined state.
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