PEB20320 Ver la hoja de datos (PDF) - Infineon Technologies

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PEB20320

Multichannel Network Interface Controller for HDLC

Infineon Technologies 

PEB 20320

Introduction

Pin Definitions and Functions (cont’d)

Pin No.

Symbol

P-MQFP-160-1

80

HLDAO

Input (I) Function

Output (O)

O

Bus Hold Acknowledge Passing ON

(Intel bus mode)

If another MUNICH32 has initiated a

HOLD REQUEST the HOLD

ACKNOWLEDGE is passed on via

HLDAO. The MUNICH32 does not give

another HOLD REQUEST before the

HOLD ACKNOWLEDGE has been

deactivated in order to prevent blocking in

the case of continuous request by one

MUNICH32.

BGO

O

Bus Grant Acknowledge (Motorola bus

mode)

If the MUNICH32 has not requested the

bus mastership it passes on the BUS

GRANT. The MUNICH32 does not give

another BUS REQUEST before the BUS

REQUEST and the BUS GRANT

ACKNOWLEDGE have been deactivated

in order to prevent blocking in the case of

continuous request by one MUNICH32.

66

AR

I

Action Request

AR must be pulsed low to cause an action

of the MUNICH32. The AR is activated for

updating the mode and channel

configurations, setting a test loop, or

initializing the interrupt queue. The

min. time between Reset and first AR is

500 µs.

User’s Manual

18

01.2000

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