Power-Up Output/State Control; Counter 0 Clock Frequency Select - Arcom PCIB40 Technical Manual

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Link 1

Counter 0 Clock Frequency Select

The clock input for counter 0 can be connected to an on-board clock generator operating at either
10KHz, 100KHz or 1MHz. This is set using LK1A/B/C.
+
LK1A
LK1B
LK1C
Links 10-14
These links are used to select the power-up state of the five groups of I/O channels. For more
information see page 4.
+
LK10
+
LK11
+ LK12
+
LK13
+
LK14
Links 20-24
Select whether the output buffer is always enabled or controlled by software. If you are configuring
the board for known boot up state then the group must be software enabled. If link B is fitted the
output state cannot be determined ('don't care' state) at power up or reset.
+ LK20
LK21
+
+ LK22
LK23
+
LK24
+
Link IRQ2-5 & 7
The output of counter 0 can be used to generate an interrupt on either IRQ 2,3,4,5 or 7.
NOTE: A PC must be configured with only one interrupt source for each interrupt line. Check your
PC configuration before selecting the interrupt signal. If you are not using the interrupt facility, it is
recommended that the jumper is not fitted.
IRQ2
IRQ3
IRQ4
IRQ5
IRQ7
8
Clock input = 1MHz
Clock input = 100KHz
Clock input = 10KHz
Power-Up Output State
Position A for Group 0 outputs set to '1'
Position B for Group 0 outputs reset to '0'
Position A for Group 1 outputs set to '1'
Position B for Group 1 outputs reset to '0'
Position A for Group 2 outputs set to '1'
Position B for Group 2 outputs reset to '0'
Position A for Group 3 outputs set to '1'
Position B for Group 3 outputs reset to '0'
Position A for Group outputs 4 set to '1'
Position B for Group outputs 4 reset to '0'
Power-up control
Position A Group 0 Outputs enabled by 'software'
Position B Group 0 Outputs always enabled after power on/reset
Position A Group 1 Outputs enabled by 'software'
Position B Group 1 Outputs always enabled after power on/reset
Position A Group 2 Outputs enabled by 'software'
Position B Group 2 Outputs always enabled after power on/reset
Position A Group 3 Outputs enabled by 'software'
Position B Group 3 Outputs always enabled after power on/reset
Position A Group 4 Outputs enabled by 'software'
Position B Group 4 Outputs always enabled after power on/reset
Interrupt select
Timer interrupt on IRQ2
Timer interrupt on IRQ3
Timer interrupt on IRQ4
Timer interrupt on IRQ5
Timer interrupt on IRQ7
J206 PCIB40 Technical Manual