Table of Contents
Advertisement
XVME-976 Adapter Module
Flash EPROM Programming Voltage
If 5 volt Flash EPROMs are used, you can connect the programming voltage
by jumpering W2 or W7 as indicated in Table 4-11. The programming volt-
age is then gated to the device with software, as part of the programming al-
gorithm.
Program Voltage
5V
5V
12V
12V
12V
12V
If 12 volt Flash EPROMs are used, you will have to supply the 12 volt pro-
gramming voltage while programming the devices. This can come from the
PC bus, or an external power supply. To use the PC bus voltage, connect J3,
pins 1 and 2. To use an external power supply, connect the 12 volts to J3,
pin 2, with the return to J3, pin 3. After programming the devices, you can
remove the 12 volt supply, or the jumper from J3 1/2. Table 4-12 shows a
summary of connector J3.
4- 4-12
Table 4-11. EPROM Programming Voltage
W1, 6
W2, 7
1/2
5/6, 8/9
1/2
5/6, 6/9
1/2
2/3, 4/5, 6/9
1/2
2/3, 4/5, 6/9, 7/8
1/2
2/3, 4/5, 5/9, 7/8
1/2
2/3, 4/5, 6/9, 7/8
Table 4-12. Connector (J3)
Function
From PC bus +12 volts
To Vpp (W2 and W7, pin 3)
Ground
Default is 1/2
Jumpering
W3, 8
Open
Open
Open
Open
Open
Open
Pin
1
2
3
W4, 9
3/5, 4/6
3/5, 4/6
4/6
4/6
4/6
1/3, 4/6
Advertisement
Table of Contents
Need help?
Do you have a question about the XVME-976 and is the answer not in the manual?