参数资料
型号: PEF2080
厂商: SIEMENS AG
英文描述: S/T Bus Interface Circuit(SBC)
中文描述: S / T的总线接口电路(SBC)的
文件页数: 6/74页
文件大小: 2620K
代理商: PEF2080
Semiconductor Group
8
Features
1.1
Pin Definitions and Functions
Pin No.
P-LCC
Pin No.
P-DIP
Symbol
Input (I)
Output (O)
Function
3
2
SX1
O
Positive output S-bus transmitter
4
3
SX2
O
Negative output S-bus transmitter
7
5
SDO
O
Serial Data Out, IOM interface
10
8
SDI
I
Serial Data In, IOM interface
8
6
DCL
I/O
Serial Data Clock, IOM interface
9
7
FSC
I/O
Frame sync, IOM interface
16
5
20
12
4
15
M2
M1
M0
I
I
I
Setting of operation mode
14
11
19
17
11
9
14
13
X3
X2
X1
X0
I
I/O
I/O
I/O
Functions depending on the selected operating
mode see chapter 2.2
21
16
CP
I/O
Clock Pulse/special purpose
24
19
XTAL1
I
Connection for external crystal, or input for
external clock generator
23
18
XTAL2
O
Connection for external crystal, n.c. when
external clock generator is used
26
20
SR2
I
S-bus receiver, signal input
27
21
SR1
O
S-bus receiver, 2.5 V reference output
Power supply, + 5 V
±
5 %
Power supply, ground
2
1
VDD
I
22
17
VSS
I
13
10
RST
I
Reset, active low
6
-
X4
I
External filter connection, active low
28
-
UFI
O
Opamp output for external filter
Auxiliary input:
V
DD
or
V
SS
to be applied
25
-
AUX
I
15
18
1
-
-
-
N.C.
-
-
-
not connected
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