PSB2186 データシートの表示（PDF） - Siemens AG

部品番号

コンポーネント説明

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PSB2186

ISDN Subscriber Access Controller for Terminals (ISAC®-S TE)

Siemens AG 

Features

1.1

Pin Definitions and Functions

Pin No. Pin No.

Pin No. Symbol

P-DIP-40 P-MQFP-64 P-LCC-44

37

37

38

38

39

39

40

40

1

41

2

42

3

43

4

44

41

AD0/D0

42

AD1/D1

43

AD2/D2

44

AD3/D3

1

AD4/D4

2

AD5/D5

3

AD6/D6

4

AD7/D7

34

27

37

CS

–

28

38

R/W

35

28

–

29

36

29

20

8

38

WR

39

DS

39

RD

23

INT

Input (I) Function

Output (O)

Open

Drain (OD)

I/O

Multiplexed Bus Mode:

I/O

Address/data bus transfers

I/O

addresses from the µP system

I/O

to the ISAC-S TE and data

I/O

between the µP system and

I/O

the ISAC-S TE.

I/O

Non-Multiplexed Bus Mode:

I/O

Data bus. Transfers data

between the µP system and

the ISAC-S TE.

I

Chip Select: A “Low“ on this

line selects the ISAC-S TE for

a read/write operation.

I

Read/Write: When “High”

identifies a valid µP access as

a read operation. When “Low”,

identifies a valid µP access as

a write operation (Motorola

I

bus mode).

Write: This signal indicates a

write operation (Intel bus

mode).

I

Data Strobe: The rising edge

marks the end of a valid read

or write operation (Motorola

bus mode).

I

Read: This signal indicates a

read operation (Intel bus

mode).

OD

Interrupt Request: The signal

is activated when the ISAC-S

TE requests an interrupt. It is

an open drain output.

Semiconductor Group

11

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