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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： | 14/34页 |
| 文件大小： | 682K |
| 代理商： | SERCON410B |
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4 CONTROL REGISTERS AND RAM DATA
STRUCTURES
4.1 CONTROL REGISTER ADDRESSES
The following table is an overview of the control
registers. The address is the word address which
is input by A6-1. To calculate the byte address, the
value has to be multiplied by two. The reset val-
ues of the control registers are shown in bold.
A6-1
Bit
Name
R/W
Value
Function
0H
0-15
VERSION
R
2
Circuit code (0002H)
1H
0
RSTFL
R/W
0
1
Reset has not taken place
Reset has taken place
1
SWRST
W
0
1
Do not reset
Reset by software
2
(Not used)
3
REPON
R/W
0
1
Repeater turned off
Repeater turned on
4
SREGEN
R
Level at SREGEN pin
5
REGMODE
R/W
0
1
Sampling at the middle of bit
Sampling according to SERCOS interface
specification
6
R/W
0
1
Baud rate = fSCLK / 16
Baud rate = fSCLK / 32
7
POLRXD
R/W
0
1
“Light on” when RxD = 0
“Light on” when RxD = 1
8
PRESYNC
R/W
0
1
No pre-frame sync word
Pre-frame sync word
9
POLTXD
R/W
0
1
“Light on” when TxD = 0
“Light on” when TxD = 1
10
ENTSBAUD
R/W
0
1
Baud rate selected by SWSBAUD pin
Baud rate selected by SWSBAUD control bit
11
SBAUD
R
Level at pin SBAUD
12
RXDNRZ
R/W
0
1
Receive data is NRZI-coded
Receive data is NRZI-coded
13
WRSYNC
R/W
Direct RAM write access
RAM write access internally synchronized
14
DMAMODE
R/W
0
1
DMAREQR/DMAREQT are static signals
DMAREQR/DMAREQT are pulses
15
(Not used)
All control registers can be written to and read
(R/W), with the exception of the control bits that
initiate an action (W). The status registers can
only be read (R). When control registers which
contain bits that are not used or can only be read,
are written to, these bits can be set to 0 or 1; they
are not evaluated internally. If control registers
are read with bits that are not used, these bits are
set to 0.
SERCON410B
17/30
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