参数资料
型号: SERCON410B
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 1 CHANNEL(S), 4M bps, SERIAL COMM CONTROLLER, PQFP100
封装: PLASTIC, QFP-100
文件页数: 21/34页
文件大小: 682K
代理商: SERCON410B
A telegram header for transmit telegram comprises four control words:
DATA STRUCTURES WITHIN THE RAM (Continued)
Index
Bit
Name
Function
0
0-7
ADR
Telegram address
8
DMA
Data storage in the RAM (DMA = 0) or DMA transfer (DMA = 1).
9
DBUF
Data in RAM: single buffer (DBUF = 0) or double buffer (DBUF = 1).
10
VAL
For double buffering (DMA = 0, DBUF = 1): data in buffer 0 (VAL = 0)
or buffer 1 (VAL = 1) are valid. Set by processor.
11-12
EN
Data telegram is not to be transmitted (EN = 0), transmitted once
(EN = 1), continuously (EN = 2) or transmitted only if the previously
received telegram contains the expected address (EN = 3) (PHAS12
=1 and FLMDTADR = 1). If EN is 1 the circuit sets EN to 0 after
the transmit telegram has been started.
13
(Not used)
14
1
Marker bit for telegram header of transmit telegram.
15
0
Marker bit for telegram header.
1
0-15
TRT
Time for the start of telegram in
s after the end of MST.
2
0-15
TLEN
Length of the telegram in data words (not including address).
3
0-9
PT
Word address of the next telegram header or the end marker.
10-15
(Not used)
SERCON410B
24/30
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