DS241PP5

17

CS4610/11

CrystalClear™ SoundFusion™ PCI Audio Accelerator

Pin Name

Direction

Functional Description

SCLK

Input

Main timing driver for digital audio link, both edges used internally for tim-

ing. Also functions as the source to the PLL for internal clock generation.

FSYNC

Input

Framing signal for digital audio link, high time indicates left channel data

and low time indicates right channel data. FSYNC is sampled on the falling

edge of the SCLK input.

SDOUT

Output

Primary output port serial data pin. This data is the CS4610 output stream

going to the CS423x DACs. SDOUT transitions on the rising edge of the

SCLK input.

SDIN

Input

Primary input port serial data pin. This data contains both CS423x ADC

data and the CS423x output data. SDIN is sampled on the falling edge of

the SCLK input.

LRCLK

Output

Framing signal for external 4333 DACs, high time indicates left channel

data and low time indicates right channel data. LRCLK transitions on the

falling edge of the SCLK input.

SDO2, SDO3

Output

Second and third output port serial data pins. These output streams are

the expanded output channels beyond the CS423x left / right pair. The

serial data on these pins transition on the falling edge of the SCLK input.

Note that this is a DIFFERENT SCLK edge than the one for the SDOUT

pin.

Table 4. Serial Audio Port Signal Summary for CS4610 + CS423x Expanded Output Configuration

CS4610 PCI

Accelerator

CS423x

ISA Codec

ABITCLK/SCLK

ASYNC/FSYNC

ASDOUT/SDOUT

MIDIIN

ASDIN/SDIN

SCLK

FSYNC

SDIN

MIDOUT

SDOUT

16.9344 MHz

PLL/

Clock Gen

JAB2/SDO3

JAB1/SDO2

Analog Out Pair 2

Analog Out Pair 3

Analog Out Pair 1

MCLK

Surround Left

Left

Surround Right

Right

Center

Sub

16.9344

JBB1/LRCLK

Figure 11. CS4610 + CS423x Expanded 6-Channel Output Configuration