Zilog Z16C30 Manual de usuario descargar pdf (Pagina 182)

8-27

Z16C30 USC

USER'S MANUAL

ZILOG

UM97USC0100

14 13 12 11 10 9 8 7 6 5 4 3 2 1 015

Starting value for Receive Character Counter

Receive Count Limit Register (RCLR) Register Address 0 b 10101

Bit(s)

Field/Bit

Name

Conditions

/Context

Description

Status

Ref Chapter: Section

RCLR15-0 Starting value for RCC: 0=disable RCC;

FFFF=enable RCC, no set max frame/message

length; else maximum allowed length

RW 5: DMA Support Features:

The Character Counters

Bit(s)

Field/Bit

Name

Conditions

/Context

Description

Status

Ref Chapter: Section

14 13 12 11 10 9 8 7 6 5 4 3 2 1 015

Received character: read only using 16-bit operation

Receive Data Register (RDR) Register Address 0 b 1x000 or 1 b xxxxx

The "other" received character in a 16-bit read

(may be the oldest or 2nd-oldest per "Select

D15-8 First" or "Select D7-0 First" commands in

RTCmd [CCAR15-11])

RO 5: The Data Registers and

the FIFOs

Received character: 8- or 16-bit read

RDR15-8 16-bit bus

Received characterRDR7-0

RW = Read/Write, RO = Read Only, WO = Write Only – for other codes see p. 8-10.

UM009402-0201

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Zilog Z16C30 Manual de usuario Pagina 182

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