PCI 9656RDK- LITE Hardware Reference Manual v1.4
© 2006 PLX Technology, Inc. All rights reserved.
11
2.11 Power Supply
The electronic devices on the RDK require 2.5V,
3.3V, and/or 5V DC power. A 3A LDO regulator
(U1) is used to convert the 5 V
DC
to 3.3 V
DC
,
and a 2A LDO regulator (U2) is used to convert
the 5 V
DC
to 2.5 V
DC
power for the on board
devices. As long as the output current from the
voltage converter remains less than the
maximum current outputs from both LDOs, the
RDK board will function correctly.
2.12 RDK Mode Configuration
The RDK hardware’s Processor/Local Bus is
pre-configured for non-multiplexed data and
address (C mode) Processor/Local Bus
operation. It can be reconfigured for multiplexed
data and address Processor/Local Bus
operation (J mode). Several resistors configure
the RDK hardware’s Processor/Local Bus for C
or J Mode. The specific resistors to install and
remove for each mode are detailed in Table 2-8.
(‘X’ means installed; no ‘X’ means removed.)
Table 2-8. RDK Board Mode Configuration
Resistors
Value
C Mode
(Default)
J Mode
Mode Pins Configuration
R4
1/10w, 10K ohm, 5%
X
R5
1/10w, 10K ohm, 5%
R6
1/10w, 0 ohm, 5%
X
R7
1/10w, 0 ohm, 5%
X
X
Data/Address Pins Configuration
R46
1/10w, 10K ohm, 5%
X
R47
1/10w, 10K ohm, 5%
X
R48
1/10w, 10K ohm, 5%
X
R49
1/10w, 10K ohm, 5%
X
R50
1/10w, 10K ohm, 5%
X
R51
1/10w, 10K ohm, 5%
X
R71
1/10w, 10K ohm, 5%
X
R79
1/10w, 10K ohm, 5%
X
R93
1/10w, 10K ohm, 5%
X
R94
1/10w, 10K ohm, 5%
X
R95
1/10w, 10K ohm, 5%
X
R96
1/10w, 10K ohm, 5%
X
R97
1/10w, 10K ohm, 5%
X
R98
1/10w, 10K ohm, 5%
X
R99
1/10w, 10K ohm, 5%
X
R100
1/10w, 10K ohm, 5%
X
R101
1/10w, 10K ohm, 5%
X
R102
1/10w, 10K ohm, 5%
X
R103
1/10w, 10K ohm, 5%
X
R104
1/10w, 10K ohm, 5%
X
R105
1/10w, 10K ohm, 5%
X
R106
1/10w, 10K ohm, 5%
X
R107
1/10w, 10K ohm, 5%
X
R108
1/10w, 10K ohm, 5%
X
