lm49350rl National Semiconductor Corporation, lm49350rl Datasheet - Page 11

• Manufacturer Part Number: lm49350rl
• Description: High Performance Audio Codec Sub-system With A Ground-referenced Stereo Headphone Amplifier & An Ultra Low Emi Class D Loudspeaker Amplifier With Dual I2s/pcm Digital Audio Interfaces
• Manufacturer: National Semiconductor Corporation

Pin
C1
C2
C3
C4
C5
C6
D1
D2
D3
D4
D5
D6
A1
A2
A3
A4
A5
A6
B1
B2
B3
B4
B5
B6
E1
E2
E3
E4
E5
E6
F1
F2
F3
F4
F5
F6
Pin Descriptions
7.1 PIN TYPE DEFINITIONS
Analog Input —
Analog Output —
Analog Input/Output — A pin that is typically used for fil-
PORT2_SYNC
PORT1_SYNC
RIGHT_MIC +
PORT2_SDO
PORT1_SDO
PORT2_CLK
RIGHT_MIC-
PORT1_CLK
LEFT_MIC +
PORT2_SDI
PORT1_SDI
AUX_OUT+
LEFT_MIC-
VREF_FLT
AUX_OUT-
Pin Name
MIC_BIAS
HP_V
I/O_V
LSGND
LS_V
AUX_R
AUX_L
A_V
AGND
DGND
D_V
MCLK
GPIO
HPR
SDA
LS +
HPL
SCL
CP+
LS -
CP-
DD
DD
DD
DD
SS
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Type
A pin that is used by the analog
and is never driven by the device.
Supplies are part of this classifica-
tion.
A pin that is driven by the device
and should not be driven by exter-
nal sources.
tering a DC signal within the de-
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Direction
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Headphone right output
Headphone and mixer power supply input
Headphone and mixer ground
Filter point for the microphone power supply and internal references
General purpose input or output
I
Headphone left output
Right analog input
Left analog input
Audio Port 2 SYNC Signal (can be master or slave)
Audio Port 2 serial data input
I
Negative power supply pin for the headphone amplifier
Auxiliary positive output
Auxiliary negative output
Audio port 2 serial data out
Audio port 2 clock signal (can be master or slave)
Input clock from 0.5MHz to 50 MHz
Charge pump flying capacitor negative input
Charge pump flying capacitor positive input
Microphone ultra clean supply (2.2V)
Audio Port 1 sync signal (can be master or slave)
Audio Port 1 serial data output
Digital ground
Loudspeaker ground
Loudspeaker power supply input
Right microphone negative input
Left microphone negative input
Audio Port 1 serial data input
Digital power supply input
Loudspeaker positive output
Loudspeaker negative output
Right microphone positive input
Left microphone positive input
Audio Port 1 clock signal (can be master or slave)
Digital interface power supply input
2
2
C interface data line
C interface clock line
11
Digital Input —
Digital Output —
Digital Input/Output — A pin that is either open drain
Description
vice. Passive components can be
connected to these pins.
A pin that is used by the digital but
is never driven by the device.
A pin that is driven by the device
and should not be driven by an-
other device to avoid contention.
(SDA) or a bidirectional CMOS in/
out. In the latter case the direction
is selected by a control register
within the LM49350.
www.national.com