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

Número de pieza

componentes Descripción

Lista de partido

PSB4860

Digital Answering Machine with Full Duplex Speakerphone SAM EC

Siemens AG 

PSB 4860

Overview

Table 1

52

53

54

55

62

63

64

65

68

69

70

71

74

75

76

77

42

43

44

45

46

47

50

51

35

Pin Definitions and Functions

MA0

MA1

MA2

MA3

MA4

MA5

MA6

MA7

MA8

MA9

MA10

MA11

MA12

MA13

MA14

MA15

I/O L1)

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

I/O L

Memory Address 0-15:

Multiplexed address outputs for ARAM, DRAM

access.

Non-multiplexed address outputs for voice

prompt EPROM.

Auxiliary Parallel Port:

General purpose I/O.

MD0

MD1

MD2

MD3

MD4

MD5

MD6

MD7

I/O -

I/O -

I/O -

I/O -

I/O -

I/O -

I/O -

I/O -

CAS0/ O

H2)

ALE

Memory Data 0-7:

Memory (ARAM, DRAM, Flash Memory,

EPROM) data bus.

ARAM, DRAM:

Column address strobe for memory bank 0 or 1.

36

CAS1/ O

FCS

Flash Memory:

Address Latch Enable for address lines A16-A23.

Chip select signal for Flash Memory

34

RAS/

O

H2) ARAM, DRAM:

FOE

Row address strobe for both memory banks.

Flash Memory:

Output enable signal for Flash Memory.

33

VPRD/ O H2) ARAM, DRAM:

FCLE

Read signal for voice prompt EPROM.

Flash Memory:

Command latch enable for Flash Memory.

Semiconductor Group

16

10.97

Share Link: