Electronics / Computers
DP communication chip board
|
Pin |
Signal Name |
ln/Out |
Description |
Source/Destination |
|||
1 |
XCS |
l(C) |
Chip-Select |
C32 Mode : connect to VDD C165 Mode: CS-Signal |
CPU (80C165) |
||
2 |
XWR/E_CLOCK |
l(C) |
Write signal /E_Clock for Motorola |
CPU |
|||
3 |
DlVlDER |
l(C) |
Setting the scaling Factor for CLKOUT2/4 |
'O' = CLK divided by 4 '1' = CLK divided by 2 |
|
||
4 |
XRD/R_W |
l(C) |
Read Signal / Read _Write for Motorola |
CPU |
|||
5 |
CLK |
l(TS) |
Clock pulse input |
System |
|||
6 |
VSS |
|
|
|
|||
7 |
CLKOUT2/4 |
O |
Clock Output (System Clock divided by 2 or 4) |
System, CPU |
|||
8 |
XlNT/MOT |
l(C) |
'0' = Intel Interface '1' = Motorola Interface |
Configuration Pin |
|||
9 |
X/lNT |
O |
lnterrupt |
CPU; lnterrupt-Controller |
|||
10 |
AB10 |
l(CPD) |
Address bus |
C32 Mode: '0'
C165 Mode: Address Bus |
System, CPU |
||
11 |
DB0 |
l(C)/O |
Data Bus |
C32 Mode: Data/Address Bus multiplexed C165 Mode: Data/Address Bus separated |
CPU, Memory |
||
12 |
DB1 |
l(C)/O |
|||||
13 |
XDATAEXCH |
O |
Indicates DATA-EXCH state for PROFlBUS-DP |
LED |
|||
14 |
XREADY/XDTACK |
O |
Ready for external CPU |
System, CPU |
|||
15 |
DB2 |
l(C)/O |
Data Bus |
C32 Mode: Data/Address Bus multiplexed C165 Mode: Data/Address Bus separated |
CPU, Memory |
||
16 |
DB3 |
l(C)/O |
|||||
17 |
VSS |
|
|
|
|||
18 |
VDD |
|
|
|
|||
19 |
DB4 |
l(C)/O |
Data Bus |
C32 Mode: Data/Address Bus multiplexed C165 Mode: Data/Address Bus separated |
CPU, Memory |
||
20 |
DB5 |
l(C)/O |
|||||
21 |
DB6 |
l(C)/O |
|||||
22 |
DB7 |
l(C)/O |
|||||
23 |
MODE |
l |
'0' = 80C166 Data/Address Bus separated; Ready Signal '1' = 80C32 Data/Address Bus multiplexed, fixed Timing |
Configuration Pin |
|||
24 |
ALE/AS |
l(C) |
Address latch
enable |
C32 mode: ALE C165 mode: 0 |
CPU (80C32) |
||
25 |
AB9 |
l |
Address bus |
C32 Mode: '0' C165 Mode: Address Bus |
CPU (C165), memory |
||
26 |
TXD |
O |
Serial send port |
PROFIBUS Interface |
|
27 |
RTS |
O |
Request to Send |
PROFIBUS Interface |
|
28 |
VSS |
|
|
|
|
29 |
AB8 |
I(C) |
Address bus |
C32 Mode: '0' C165 Mode: Address Bus |
CPU (C165), memory |
30 |
RXD |
I(C) |
Serial Receive Port |
PROFIBUS Interface |
|
31 |
AB7 |
I(C) |
Address bus |
C32 Mode: '0' C165 Mode: Address Bus |
CPU (C165), memory |
32 |
AB6 |
I(C) |
|||
33 |
XCTS |
I(C) |
Clear to Send: 'O' = send enable |
FSK Modem |
|
34 |
XTEST0 |
I(C) |
Pin must be connected to VDD. |
|
|
35 |
XTEST1 |
I(C) |
Pin must be connected to VDD. |
|
|
36 |
RESET |
I(CS) |
Connect Reset Input with CPU's port pin. |
|
|
37 |
AB4 |
I(C) |
Address bus |
C32 Mode: '0' C165 Mode: Address Bus |
CPU (C165), memory |
38 |
VSS |
|
|
|
|
39 |
VDD |
|
|
|
|
40 |
AB3 |
I(C) |
Address bus |
C32 Mode: '0' C165 Mode: Address Bus |
CPU (C165), memory |
41 |
AB2 |
I(C) |
|||
42 |
AB5 |
I(C) |
|||
43 |
AB1 |
I(C) |
|||
44 |
AB0 |
I(C) |
Notes:
All signals beginning with an 'X' indicate "low level active."
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