WinSystems EBC-LP Operation Manual page 29

2.21.3
Port 2 Bit 7
Port 2 Bit 6
Port 2 Bit 5
Port 2 Bit 4
Port 2 Bit 3
Port 2 Bit 2
Port 2 Bit 1
Port 2 Bit 0
Port 1 Bit 7
Port 1 Bit 6
Port 1 Bit 5
Port 1 Bit 4
Port 1 Bit 3
Port 1 Bit 2
Port 1 Bit 1
Port 1 Bit 0
Port 0 Bit 7
Port 0 Bit 6
Port 0 Bit 5
Port 0 Bit 4
Port 0 Bit 3
Port 0 Bit 2
Port 0 Bit 1
Port 0 Bit 0
+5V
Par al lel I/O VCC En able
The I/O con nec tors can pro vide +5 volts to an I/O rack or for mis cel la ne ous pur poses by jump er ing
J26. When J26 is jumpered +5 volts is pro vided at pin 49 of both J19 and J20. It is the user's
re spon si bil ity to limit cur rent to a safe value (less than 1A) to avoid dam ag ing the CPU board.
2.21.4 WS16C48 Reg is ter Defi ni tions
The EBC-LP uses the WinSystems ex clu sive ASIC de vice, the WS16C48. This de vice pro vides 48
lines of digi tal I/O. There are 17 unique reg is ters within the WS16C48. The fol low ing ta ble
sum ma rizes the reg is ters and the text that fol lows pro vides de tails on each of the in ter nal reg is ters.
Page 2-20
WinSystems - "The Embedded Authority"
J20
1 o o 2
GND
3 o o 4
GND
5 o o 6
GND
7 o o 8
GND
9 o o 10
GND
11 o o 12
GND
13 o o 14
GND
15 o o 16
GND
17 o o 18
GND
19 o o 20
GND
21 o o 22
GND
23 o o 24
GND
25 o o 26
GND
27 o o 28
GND
29 o o 30
GND
31 o o 32
GND
33 o o 34
GND
35 o o 36
GND
37 o o 38
GND
39 o o 40
GND
41 o o 42
GND
43 o o 44
GND
45 o o 46
GND
47 o o 48
GND
49 o o 50
GND
EBC-LP OPERATIONS MANUAL
J19
1 o o 2
Port 5 Bit 7
3 o o 4
Port 5 Bit 6
5 o o 6
Port 5 Bit 5
7 o o 8
Port 5 Bit 4
9 o o 10
Port 5 Bit 3
11 o o 12
Port 5 Bit 2
13 o o 14
Port 5 Bit 1
15 o o 16
Port 5 Bit 0
17 o o 18
Port 4 Bit 7
19 o o 20
Port 4 Bit 6
21 o o 22
Port 4 Bit 5
23 o o 24
Port 4 Bit 4
25 o o 26
Port 4 Bit 3
27 o o 28
Port 4 Bit 2
29 o o 30
Port 4 Bit 1
31 o o 32
Port 4 Bit 0
33 o o 34
Port 3 Bit 7
35 o o 36
Port 3 Bit 6
37 o o 38
Port 3 Bit 5
39 o o 40
Port 3 Bit 4
41 o o 42
Port 3 Bit 3
43 o o 44
Port 3 Bit 2
45 o o 46
Port 3 Bit 1
47 o o 48
Port 3 Bit 0
49 o o 50
+5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
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