User's Manual

PMAC2 PCI Hardware Reference Manual
14 Base Board Jumper Descriptions
E5 – E6: (Reserved for Future Use)
E13 - E14: Encoder Sample Clock Direction Control
E Point and
Physical layout
Location Description Default
E13
1
2
3
D1 Remove jumper to output SCLK generated in
first ASIC on SCLK_12 and SCLK_34, or to
control direction by software.
Jump pins 1 to 2 to input SCLK signal for
first ASIC on SCLK_34 and output this
signal on SCLK_12.
Jump pins 2 to 3 to input SCLK signal for
first ASIC on SCLK_12 and output this
signal on SCLK_34.
No jumper installed
E14
3 2 1
D2 Remove jumper to output SCLK generated in
second ASIC on SCLK_56 and SCLK_78, or
to control direction by software.
Jump pins 1 to 2 to input SCLK signal for
second ASIC on SCLK_78 and output this
signal on SCLK_56.
Jump pins 2 to 3 to input SCLK signal for
second ASIC on SCLK_56 and output this
signal on SCLK_78.
No jumper installed
Note: E14 is only installed if Option 1 has been ordered.
E17 - E18: Serial Port Type Selection
E Point and
Physical layout
Location Description Default
E17
1
2
3
C1 Connect pins 1 and 2 to use the RS-232 port
on the J5 connector.
Connect pins 2 and 3 to use the RS-422 port
on the J5A connector.
Jumper installed in
1-2 position
E18
1
2
3
C1 Connect pins 1 and 2 to use the RS-232 port
on the J5 connector.
Connect pins 2 and 3 to use the RS-422 port
on the J5A connector.
Jumper installed in
1-2 position
Serial Port Choice: Because both RS-232 and RS-422 ports are always provided, jumpers must be set
correctly to use the port of choice. Jumpers E17 and E18 must connect pins 1 and 2 to use the RS-232 port
on the J5 connector; to use the RS-422 port on the J5A connector, they must connect pins 2 and 3.