Datasheet

Selecting the Input & Output Data Formats

3-4

3.4 Selecting the Input & Output Data Formats

The SRC419x devices support a flexible set of audio data formats. Table 3–2

summarizes the input and output format options for the sample rate convert-

ers. Section 3.5 of this chapter describes the format configuration for the digital

audio receiver and transmitter devices.

When ~4193 is set to HI, the IFMT0, IFMT1 and IFMT2 elements of switch

SW7 are used to select the input port data format. The OFMT0, OFMT1,

OWL0, and OWL1 elements of switch SW10 are used to select the output port

data format and word length.

When ~4193 is set to LO, Control Register 3 of the SRC4193 is used to select

the input and output data formats.

Table 3–2.SRC419x Input & Output Port Data Format Configuration

IFMT2 IFMT1 IFMT0 Input Port Data Format

LO LO LO 24–Bit Left Justified

LO LO HI 24–Bit I

LO HI LO Unused

LO HI HI Unused

HI LO LO 16–Bit Right Justified

HI LO HI 18–Bit Right Justified

HI HI LO 20–Bit Right Justified

HI HI 24–Bit Right Justified

OFMT1 OFMT0 Output Port Data Format

LO LO Left Justified

LO HI I

TDM

Right Justified

OWL1 OWL0 Output Port Data Word Length

LO LO 24–Bits

LO HI 20–Bits

18–Bits

16–Bits