Analog Audio I/O
Table 2-2. Multifunction Pin Register Configuration (continued)
Required Register
Description
Required Register Setting
Description
Setting
Page 0 / Register 52, Bits
I
2
S ADC WCLK out on
Page 0 / Register 55, Bits
Secondary I
2
S DIN on
D5-D2=0001
H7
S8
MISO/MFP4
D4-D1=0110
GPIO/MFP5
Page 0 / Register 31, Bit
D0=0
I
2
S ADC WCLK out on
Page 0 / Register 52, Bits
Secondary I
2
S DOUT on
Page 0 / Register 55, Bits
H8
T7
GPIO/MFP5
D5-D2=0111
MISO/MFP4
D4-D1=1000
Page 0 / Register 54, Bits
Secondary I
2
S BCLK OUT
Page 0 / Register 53, Bits
I4
I
2
S DIN on DIN/MFP1
U5
D2-D1=01
on DOUT/MFP2
D3-D1=110
I
2
S DOUT on
Page 0 / Register 53, Bits
Secondary I
2
S BCLK OUT
Page 0 / Register 55, Bits
J5
U7
DOUT/MFP2
D3-D1=001
on MISO/MFP4
D4-D1=1001
General Purpose Out I on
Page 0 / Register 53, Bits
Secondary I
2
S BCLK OUT
Page 0 / Register 52, Bits
K5
U8
DOUT/MFP2
D3-D1=010
on GPIO/MFP5
D5-D2=1000
General Purpose Out II
Page 0 / Register 55, Bits
Secondary I
2
S WCLK OUT
Page 0 / Register 53, Bits
K7
V5
on MISO/MFP4
D4-D1=0010
on SCLK/MFP3
D3-D1=111
General Purpose Out III
Page 0 / Register 52, Bits
Secondary I
2
S WCLK OUT
Page 0 / Register 55, Bits
K8
V7
on GPIO/MFP5
D5-D2=0011
on MISO/MFP4
D4-D1=1010
General Purpose In I on
Page 0 / Register 54, Bits
Secondary I
2
S WCLK OUT
Page 0 / Register 52, Bits
L4
V8
DIN/MFP1
D2-D1=10
on GPIO/MFP5
D5-D2=1001
Page 0 / Register 56, Bits
General Purpose In II on
Page 0 / Register 56, Bits
Headset Detect Input on
D2-D1=00
L6
W6
SCLK/MFP3
D2-D1=10
SCLK/MFP3
Page 0 / Register 67, Bit
D7=1
General Purpose In III on
Page 0 / Register 52, Bits
Aux Clock Output on
Page 0 / Register 53, Bits
L8
X5
GPIO/MFP5
D5-D2=0010
DOUT/MFP2
D3-D1=011
INT1 output on
Page 0 / Register 53, Bits
Aux Clock Output on
Page 0 / Register 55, Bits
M5
X7
DOUT/MFP2
D3-D1=100
MISO/MFP4
D4-D1=0011
INT1 output on
Page 0 / Register 55, Bits
Aux Clock Output on
Page 0 / Register 52, Bits
M7
X8
MISO/MFP4
D4-D1=0100
GPIO/MFP5
D5-D2=0100
INT1 output on
Page 0 / Register 52, Bits
M8
GPIO/MFP5
D5-D2=0101
2.2
Analog Audio I/O
The analog I/O path of the TLV320DAC3203 offers a variety of options for signal conditioning and routing:
•
2 headphone amplifier outputs
•
Analog gain setting
•
Single ended and differential modes
2.2.1 Analog Low Power Bypass
The TLV320DAC3203 offers an analog-bypass mode. An analog signal can be routed from the analog
input pin to the output amplifier. Neither the digital-input processing blocks nor the DAC resources are
required for such operation; this supports low-power operation during analog-bypass mode.
In analog low-power bypass mode, line-level signals can be routed directly from the analog inputs INL to
the left headphone amplifier (HPL) and INR to HPR.
15
SLAU434 – May 2012
TLV320DAC3203 Application
Copyright © 2012, Texas Instruments Incorporated