lm4921itlx National Semiconductor Corporation, lm4921itlx Datasheet - Page 4

• Manufacturer Part Number: lm4921itlx
• Description: Low Voltage I2s 16-bit Stereo Dac With Stereo Headphone Power Amplifiers And Volume Control
• Manufacturer: National Semiconductor Corporation

www.national.com
LM4921 I/O Pin Descriptions
PIN # (ITL)
B1
C2
B2
E3
E4
D3
E2
D2
C4
B4
A3
C1
A1
D1
E1
B3
A4
A2
C3
D4
PIN NAME
I2S_CLK
I2S_DATA
I2S_WS
SPI_CLK
SPI_DATA
SPI_ENABLE
MCLK/XTAL_IN
XTAL_OUT
BYPASS
AV
AGND
DV
GNDD
VDDX
GNDX
HP_L
HP_R
No Connect
No Connect
No Connect
DD
DD
PIN TYPE
Input-I, Output-O,
Power-P, No Connect-NC
I/O
I
I/O
I
I
I
I
O
I/O
P
P
P
P
P
P
O
O
O
NC
NC
4
PIN DESCRIPTION
I2S Clock
I2S data
I2S L/R word select
SPI clcock
SPI data
SPI Enable
Master Clock / Xtal input
Xtal output
Analog VDD/2 bypass capacitor connection
point
Analog supply
Analog Ground
Digital Supply
Digital ground
XTAL Oscillator circuit supply
XTAL Oscillator circuit ground
HP left output
HP right output
Must let float
NC
NC