ESS Technology, Inc.

SAM0529-091305

3

ES6425 PRODUCT BRIEF

ES6425 PIN DESCRIPTION

ES6425 PIN DESCRIPTION

Table 1 lists the pin descriptions for the ES6425. The

pound symbol (#) denotes an active-low signal.

Table 1

ES6425 Pin Description

Name

Pin Numbers

I/O

Definition

VEE

1,18, 27, 59, 68, 75,

92, 99, 104, 130,

148, 157, 159, 164,

183, 193, 201

P

I/O power supply.

LA[21:0]

2-7, 10-16, 19-23,

204-207

O

RISC port address bus.

VSS

8, 17, 26, 34, 43,

60, 67, 76, 84, 91,

98, 103, 120, 129,

138, 147, 156, 163,

171, 177, 184, 192,

200, 208

G

Ground.

VCC

9, 35, 44, 83, 121,

139, 172

I

Core power supply.

RESET#

24

I

Reset input (active-low); (5V tolerant input).

TDMDX

25

O

TDM transmit data.

RSEL

I

LCS3 ROM Boot Data Width Select. Strapped to VCC or ground via 4.7-k

Ω

resistor; read during reset.

TDMDR

28

I

TDM receive data; (5V tolerant input).

TDMCLK

29

I

TDM clock; (5V tolerant input).

TDMFS

30

I

TDM frame sync; (5V tolerant input).

TDMTSC#

31

O

TDM output enable (active-low).

TWS

32

O

Audio transmit frame sync.

SEL_PLL2

I

System and DSCK output clock frequency selection is made at the rising edge of

RESET#. The matrix below lists the available clock frequencies and their

respective PLL bit settings. Pull up to VCC via 4.7-k

Ω resistor for proper

operation; read during reset.

TSD0

33

O

Audio transmit serial data output 0.

SEL_PLL0

I

Pull up to VCC via 4.7-k

Ω resistor for proper operation; read during reset.

RSEL

Selection

016-bit ROM

18-bit ROM

SEL_PLL2

SEL_PLL1

SEL_PLL0

Clock Type

0

0

0

DCLK x 4.5

0

0

1

DCLK x 5.0

0

1

0

Bypass mode

0

1

1

DCLK x 4.0

1

0

0

DCLK x 4.25

1

0

1

DCLK x 4.75

1

1

0

DCLK x 5.5

1

1

1

DCLK x 6.0