Anybus CompactCom M40 User Manual

Host Interface 26 (114)
3.4 SPI Operation
3.4.1 General Description
The SPI (Serial Peripheral Interface) bus is a synchronous serial data link standard which
operates in full duplex mode.
The SPI interface is activated using the OM[0...3] inputs. See Operating Modes, p. 16.
3.4.2 Pin Usage in SPI Mode
Presented below is an overview of all pins except GND and 3V3.
Pin Signal Name Type Description/Comments
49
24
48
23
47
22
46
21
DIP1_0
DIP1_1
DIP1_2
DIP1_3
DIP1_4
DIP1_5
DIP1_6
DIP1_7
I
I
I
I
I
I
I
I
DIP switch. Usage defined by application.
Readable through attribute #14 (Switch status) in Anybus Object,
instance #1.
Connect to GND if not used.
45 SS I Slave select. Active low.
20 SCLK I Serial Clock Input
44 MISO O Master input, slave output. Input to the master’s shift register, and
output from the slave’s shift register.
19 MOSI I Master output, slave input. Output from the master’s shift register,
and input to the slave’s shift register.
43
18
(not used) I
O, I
Connect to 3V3.
14
39
15
40
16
41
17
42
DIP2_0
DIP2_1
DIP2_2
DIP2_3
DIP2_4
DIP2_5
DIP2_6
DIP2_7
I
I
I
I
I
I
I
I
DIP switch. Usage defined by application.
Readable through attribute #14 (Switch status) in Anybus Object,
instance #1.
Connect to GND if not used.
4
29
5
30
6
31
7
32
LED1B
LED1A
LED2B
LED2A
LED3B
LED3A
LED4B
LED4A
O
O
O
O
OD
OD
O
O
LED interface. Gives access to LED indications. For more
information, see LED Interface / D8–D15 (Data Bus), p. 13".
34
33
10
(not used) I Connect to 3V3.
9 IRQ O Active low Interrupt Request signal. Asserted by the Anybus
CompactCom.
The use of this signal is optional but highly recommended. Even if
the host application lacks interrupt capabilities, it is
recommended to connect this signal to an input port to simplify
software design.
This signal must be pulled to 3V3 on the host application side to
prevent spurious interrupts during startup.
36
11
35
OM0
OM1
OM2
I Operating mode [OM2, OM1, OM0]: 0,0,1 for SPI operating mode.
For more information see Operating Modes, p. 16".
3 OM3 / ASI TX O, Strap Black channel output. See Black Channel/Safety Module, p. 41
During startup the pin (with OM[0..2]) is used to define the
operating mode of the module. Connect to external pull-down for
SPI operating mode,see Application Connector Pin Overview, p.
11.
Anybus
®
CompactCom
™
M40 Hardware Design Guide HMSI-216-126 EN 2.6

Anybus CompactCom M40 Specifications

General

Brand	Anybus
Model	CompactCom M40
Category	Conference System
Language	English