Host Interface 22 (114)
3.3.3 Pin Usage in 16–bit Parallel Mode
The parallel 16-bit interface uses the following signals:
Pin Signal Name Pin Type Description/Comments
24
48
23
47
22
46
21
45
20
44
19
43
18
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
I A[1...13]: Mandatory address input signals.
Selects source/target location.
14
39
15
40
16
41
17
42
4
29
5
30
6
31
7
32
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
I/O Standard bidirectional data bus.
49 WEH I Write enable high byte.
34 WEL I Write enable low byte.
33 OE I Bus output enable; enables output on the data bus when low.
10 CS I Bus chip select enable; enables parallel access to the module
when low.
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. Connect all three to 3V3 for 16-bit parallel
operating mode.
For more information see Operating Modes, p. 16".
27
2
MI0/SYNC
MI1
O See Module Identification, p. 17".
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 pull-down for 16-bit
parallel operating mode, see Application Connector Pin Overview,
p. 11.
28 ASI RX I Black channel input. Connect to 3V3 if not used.
See Black Channel/Safety Module, p. 41
26
25
MD0
MD1
O See Module Detection, p. 16.
8 RESET I See RESET (Reset Input), p. 18".
Applications with limited number of address lines may connect A[0..10] of the Anybus
CompactCom to their CPU, and pull signals A[11..13] high. This will allow communication with
Anybus
®
CompactCom
™
M40 Hardware Design Guide HMSI-216-126 EN 2.6
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