Zilog Z16C30 Uživatelský manuál stáhnout pdf (Strana 169)

8-14

Z16C30 USC

USER'S MANUAL

ZILOG

UM97USC0100

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

Wait4

Tx Trig

Channel Control Register (CCR) Register Address 0 b 00011

Bit(s)

Field/Bit

Name

Conditions

/Context

Description

Status

Ref Chapter: Section

Reserved (0)

CCR15-14

Async:TxShaveL

RxStatBlk

TxCtrlBlk 00=don't use Transmit Control Blocks;

10=use 32-bit TCB's

RW 5: DMA Support Features:

Transmit Control Blocks

Wait4

Rx Trig

TxCtrlBlk

Flag

Pre

Amble

CCR13 Wait4TxTrig

Sync:TxPreL Sync:TxPrePat

Sync

1=hold Transmit DMA Request between

frames/messages, until software issues

"Trigger Tx DMA" command

5: Synchronizing Frames/

Messages with Software

Response

CCR11-8 TxShaveL Async,

CMR15=1

shave the number of Stop bits

specified by TxSubMode CMR14

by (15 minus the value in this field)/16 bit times

5: Asynchronous Mode

CCR11-10 TxPreL Sync w/

Preamble

00=send 8-bit Preamble; 01=16-bit;

10=32-bit; 11=64-bit

5: Between Frames,

Messages, or Characters

CCR9-8 TxPrePat

Sync w/

Preamble

00=all-zero Preamble; 01=all ones;

10=101010...; 11=010101...

5: DMA Support Features:

Receive Status Blocks

CCR7-6 RxStatBlk

00=do not use Receive Status Blocks;

Ext Sync,

T. Bisync,

H/SDLC,

802.3,

01=use 16-bit RSB's;

10=use 32-bit RSB's

5: Synchronizing Frames/

Messages with Software

Response

CCR5 Wait4

RxTrig

1=hold Receive DMA Request between frames/

messages, until software issues "Trigger Rx

DMA" command

Sync

CCR12

Flag

Preamble

H/SDLC,

CCR9-8

=01

1=send Flags as Preamble

5: Between Frames,

Messages, or Characters

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

UM009402-0201

1 2 ... 164 165 166 167 168 169 170 171 172 173 174 ... 207 208

Komentáře k této Příručce

Žádné komentáře

Zilog Z16C30 Uživatelský manuál Strana 169

Komentáře k této Příručce

Související produkty a manuály pro Senzory Zilog Z16C30