CS8416-CSZ datasheet(12/60 Pages) CIRRUS

12 / 60 page

DS578F3

CS8416

2. PIN DESCRIPTION - SOFTWARE MODE

2.1

TSSOP Pin Description

Name

Pin #

Pin Description

Analog Power (Input) - Analog power supply. Nominally +3.3 V. This supply should have as little noise

as possible since noise on this pin will directly affect the jitter performance of the recovered clock

Digital Power (Input) – Digital core power supply. Nominally +3.3 V

Logic Power (Input) – Input/Output power supply. Nominally +3.3 V or +5.0 V

AGND

Analog Ground (Input) - Ground for the analog circuitry in the chip. AGND and DGND should be con-

nected to a common ground area under the chip.

DGND

Digital & I/O Ground (Input) - Ground for the I/O and core logic. AGND and DGND should be connected

to a common ground area under the chip.

RST

Reset (Input) - When RST is low, the CS8416 enters a low power mode and all internal states are reset.

On initial power up, RST must be held low until the power supply is stable, and all input clocks are stable

in frequency and phase.

FILT

PLL Loop Filter (Output) - An RC network should be connected between this pin and analog ground.

For minimum PLL jitter, return the ground end of the filter network directly to AGND. See “PLL Filter” on

page 53 for more information on the PLL and the external components.

RXP0

RXP1

RXP2

RXP3

RXP4

RXP5

RXP6

RXP7

Positive AES3/SPDIF Input (Input) - Single-ended or differential receiver inputs carrying AES3 or

S/PDIF encoded digital data. The RXP[7:0] inputs comprise the 8:2 S/PDIF Input Multiplexer. The select

line control is accessed using the Control 4 register (04h). Unused multiplexer inputs should be left float-

ing or tied to AGND. See “External AES3/SPDIF/IEC60958 Receiver Components” on page 49 for rec-

ommended input circuits.

RXP3

OLRCK

RXP2

OSCLK

RXP1

SDOUT

RXP0

OMCK

RXN

RMCK

AGND

DGND

FILT

RST

GPO0

RXP4

GPO1

RXP5

AD2 / GPO2

RXP6

SDA / CDOUT

RXP7

SCL / CCLK

AD0 / CS

AD1 / CDIN

821

Top-Down View

28-pin SOIC/TSSOP

Package

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