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STA320

Table 5. PIN FUNCTION

Pin N`

Name

Type

Description

Pad Type

I²C Address selector

CMOS Input Buffer with Pull-Down

DDX1A

Channel 1 DDX Output A

3.3V Capable TTL 4mA Output Buffer

DDX1B

Channel 1 DDX Output B

3.3V Capable TTL 4mA Output Buffer

DDX2A

Channel 2 DDX Output A

3.3V Capable TTL 4mA Output Buffer

DDX2B

Channel 2 DDX Output B

3.3V Capable TTL 4mA Output Buffer

RESET

Global reset (active low)

5V Tolerant TTL Schmitt Trigger Input

Buffer

SCL

I²C Serial Clock

5V Tolerant TTL Schmitt Trigger Input

Buffer

SDA

I/O

I²C Serial Data

Bidirectional Buffer: 5V Tolerant TTL

Schmitt

Trigger Input; 3.3V Capable 2mA

Slew-rate

controlled Output.

RESERVED

Test pin to be externally connected

to Ground

FILTER_PLL

Connection to PLL_filter

Analog Pad

XTI

PLL Input clock

5V Tolerant TTL Schmitt Trigger Input

Buffer

GNDA

Analog Ground

VddA

3.3V Analog Power Supply Voltage

SDI_12

I²S Serial Data Channels 1 & 2

5V Tolerant TTL Input Buffer

LRCKI

I²S Left/Right Clock

5V Tolerant TTL Input Buffer

BICKI

I²S Serial Clock

5V Tolerant TTL Input Buffer

GND

I/O

Digital Ground

Vdd

I/O

3.3V Digital Power Supply Voltage

Vdd

I/O

3.3V Digital Power Supply Voltage

PWDN

Device Powerdown

5V Tolerant TTL Schmitt Trigger Input

Buffer

DDX3A

Channel 3 DDX Output A

3.3V Capable TTL 4mA Output Buffer

DDX3B

Channel 3 DDX Output B

3.3V Capable TTL 4mA Output Buffer

EAPD

External Amp Power Down

3.3V Capable TTL 4mA Output Buffer

TRI-STATE

Tri-state output to Power block

3.3V Capable TTL 4mA Output Buffer

OCDETECT

Over-current Indicator

5V Tolerant TTL Input Buffer

FAULT

Power Fault Indicator

5V Tolerant TTL Input Buffer

TWARN

Thermal Warning Indicator

5V Tolerant TTL Input Buffer

GND

I/O

Digital Ground

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