PSB4860 Просмотр технического описания (PDF) - Infineon Technologies

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PSB4860

ICs for Communications Sophisticated Answering Machine with Echo Cancellation SAM-EC

Infineon Technologies 

PSB 4860

Table 1 Pin Definitions and Functions

33

VPRD/

O H3) ARAM, DRAM:

FCLE

Read signal for voice prompt EPROM.

Flash Memory:

Command latch enable for Flash Memory.

32

W/FWE O H3) ARAM, DRAM:

Write signal for all memory banks.

Flash Memory:

Write signal for Flash Memory.

31

FRDY

I

-

Flash Memory Ready

Input for Ready/Busy signal of Flash Memory

5

OSC1

I

-

Auxiliary Oscillator:

6

OSC2

OZ

Oscillator loop for 32.768 kHz crystal.

8

CLK

I

-

Alternative AFECLK Source

13,824 MHz

2

XTAL1

I

-

Oscillator:

3

XTAL2

OZ

XTAL1: External clock or input of oscillator

loop.

XTAL2: output of oscillator loop for crystal.

37

SPS0

OL

Multipurpose Outputs:

38

SPS1

OL

General purpose, speakerphone, address

lines or status

56

RO

O-

Reserved Output

Must be left open.

41, 80

NC

-

-

Not Connected

1) I = Input

O = Output

OD = Open Drain

2) These lines are driven low with 102 µA (typical) until the mode (address lines or auxiliary port) is defined.

3) These lines are driven high with 100 µA (typical) during reset.

Data Sheet

17

2000-01-14

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