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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： | 22/34页 |
| 文件大小： | 682K |
| 代理商： | SERCON410B |
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DATA STRUCTURES WITHIN THE RAM (Continued)
4.2.2 Data Containers
A data container comprises one or two 16-bit con-
trol words as well as a variable number of data
words. If the data is stored in the internal RAM
(DMA = 0) and a single buffer is used (DBUF = 0),
the data container has one buffer. Using RAM
Index
Bit
Name
Function
0
0-9
LEN
Number of 16-bit data words of the data block.
10
SVFL
Flag, whether data block uses service container (SVFL = 1).
11-13
NSV
Number of service container, which is used (0 - 7).
14
SCMASTER
Processing of service container in slave mode (SCMASTER = 0)
or master mode (SCMASTER = 1).
15
LASTDC
Last data container of the telegram (1) or further data containers
follow (0).
1
0-15
POS
Position of the data block within the telegram in number of words.
The first data record of a telegram has POS = 0 (only in case of
receive telegrams).
Figure 13. Structure of Data Containers
storage and double buffering (DBUF = 1), two data
buffers are needed. In case of DMA transfer (DMA
= 1) the data container only comprises the control
words (Fig. 13). The structure of the two control
words depends on whether a telegram is transmit-
ted or received:
SERCON410B
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