Datasheet

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SLOS327C − AUGUST 2000 − REVISED MAY 2001
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME NO.
I/O
DESCRIPTION
ADDRESS0 4 I Bit 0 of user-setable portion of device’s I
2
C address.
ADDRESS1 10 I Bit 1 of user-setable portion of device’s I
2
C address.
BYPASS 21 Tap to voltage divider for internal midsupply bias generator.
GND 1, 13 Ground connection for circuitry. Connect to thermal pad
LHPIN 7 I Left-channel headphone input, selected when SE/BTL is held high, or programmed via I
2
C.
LIN 5 I Common left input for fully differential input. AC ground for single-ended inputs.
LLINEIN 6 I Left-channel line input, selected when SE/BTL is held low, or programmed via I
2
C.
LOUT+ 2 O Left-channel positive output in BTL mode, and positive output in SE mode.
LOUT− 24 O Left-channel negative output in BTL mode, and high impedance in SE mode.
PC-BEEP 3 I The input for PC-BEEP mode which is enabled when a > 1-V (peak-to-peak) square wave is input to this
terminal, when PCB ENABLE is held high, or programmed via I
2
C. If not used, ground this terminal.
I2CV
DD
16 I The voltage on this terminal sets the trip points for the I
2
C interface. If the system I
2
C bus is running at 3.3 V,
then tie this terminal to 3.3 V. If the system I
2
C bus is running at 5 V, then tie this terminal to 5 V.
PV
DD
8, 19 I Power supply
RHPIN 17 I Right-channel headphone input, selected when SE/BTL is held high, or programmed via I
2
C.
RIN 9 I Common right input for fully differential input. AC ground for single-ended inputs.
RLINEIN 18 I Right-channel line input, selected when SE/BTL is held low, or programmed via I
2
C.
ROUT+ 12 O Right-channel positive output in BTL mode, and positive output in SE mode.
ROUT− 14 O Right-channel negative output in BTL mode, and high impedance in SE mode.
SCL 23 I I
2
C clock line
SDA 15 Serial data line of the I
2
C bus. Pullup resistor must comply with the I
2
C standard: minimum value = 3 kΩ,
maximum value = 19 kΩ. Pull up to I2CV
DD
SE/BTL 11 I Input MUX control input. When this terminal is held high, the LHPIN or RHPIN, and the SE output are
selected. When this terminal is held low, the LLINEIN or RLINEIN, and the BTL
output are selected. This
functionality can also be programmed via I
2
C.
SHUTDOWN 22 I When held low, this terminal places the device in the shutdown mode, except for the PC-BEEP input and the
I
2
C bus.
V
DD
20 I Power supply