PPC7A Product Manual
Functional Description
8-24
1
st
Edition
Equipment Present Register 3 (Port 0x0810)
This register provides information on hardware options fitted to the PPC7A.
MSB = D0, LSB = D7
D0 to D3: Reserved. Always reads ‘0’
D4:
PMC IO voltage
0 = 5 Volt
1 = 3.3 Volt
D5:
3.3Volt PMC power
0 = Powered by onboard power supply
1 = Power from taken from 3.3V pins on VME connectors
D6 and D7:
SCSI clock speed
D6 D7 S
PEED
(M
HZ
)
0
0
Reserved
0
1
40
1
0
80
1
1
Reserved
Key Lock Register (Port 0x0818)
This register provides information on the state of the keylock signal. See the Keylock section for more
details.
MSB = D0, LSB = D7
D0 to D6: Reserved
D7: Keylock
0 = Keylock signal low
1 = Keylock signal high
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com