21-2
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
21.2.
Input/Output Pins and External Connections
21.2.1.
List of Input/Output Pins
Table 20.2.1.1 lists the SDAC output pins.
Table 21.2.1 SDAC output pins.
Pin name
I/O
Initial status
Function
PORT
O
Hi-Z
External AMP enable signal output
SDACOUT_P
O
O
SDAC positive sound signal output
SDACOUT_N
O
O
SDAC negative sound signal output
21.2.2.
External Connections
Figure 21.2.2.1 and 21.2.2.2 show the reference circuit between the SDAC and the external Audio AMP.
Please check and follow Audio AMP specification.
Single
Figure 21.2.2.1 Single Mode Connection
Differential
Figure 21.2.2.2 Differential Mode Connection
Audio AMP
Enable
IN-
IN+
Cin
Rin
39uF
510
Ω
39uF
510
Ω
Cin
Rin
S1C31D50
PORT
Enable Control
SDACOUT_N
Low Pass Filter: cutoff 8kHz
pull-down(if AMP Enable is Sleep)
Please check AMP Enable specification
S1C31D50
Audio AMP
Enable
IN-
IN+
SDACOUT_P
PORT
Enable Control
SDACOUT_N
Low Pass Filter: cutoff 8kHz
Cin
Rin
39uF
510
Ω
39uF
510
Ω
Cin
Rin
39uF
510
Ω
39uF
510
Ω
pull-down(if AMP Enable is Sleep)
Please check AMP Enable specification
Summary of Contents for S1C31D50
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Page 462: ...25 2 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP13 64PIN ...
Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...