PSB4860 Ver la hoja de datos (PDF) - Siemens AG

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PSB4860

Digital Answering Machine with Full Duplex Speakerphone SAM EC

Siemens AG 

PSB 4860

Overview

Table 1

32

Pin Definitions and Functions

W/FWE O

H2) 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 O

Z

Oscillator loop for 32.768 kHz crystal.

8

CLK

I

-

Alternative AFECLK Source

13,824 MHz

2

XTAL1 I

-

Oscillator:

3

XTAL2 O

Z

XTAL1: External clock or input of oscillator loop.

XTAL2: output of oscillator loop for crystal.

37

SPS0

O

L

Multipurpose Outputs:

38

SPS1

O

L

General purpose, speakerphone, address lines

or status

56

RO

O-

Reserved Output

Must be left open.

1) These lines are driven low with 125 µA until the mode (address lines or auxiliary port) is defined.

2) These lines are driven high with 70 µA during reset.

Semiconductor Group

17

10.97

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