CMD-5xx 08/07/02
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PM-561/2/3/4 Hardware Options
JP1, 2, 3, 4 Option Jumpers
BDM Port operating voltage selection. All 4 jumpers must be optioned the same for correct interface levels on associated signals.
The selection of 2.6V or 3.3V operation is dependent on the BDM Pod to be connected to the BDM_PORT. Default setting is 3.3V
which selects the proper voltage outputs for most common BDM Pods. Refer to BDM Pod information for correct setting.
VDDSRAM Option
VDDSRAM pin is the input to an internal shunt regulator on the MPC561-4. The resistor R8 on the PM-561-4 board provides
current limit input to this pin. To apply a different voltage to this pin, the R8 resistor should be removed and the CMD-561-4
POWER_PORT connection for VDDSRAM should be used for voltage input. If the CMD561-4 board POWER_PORT is used, the
appropriate current limit resistor must be placed in series between the voltage source and the POWER_PORT or damage to the
MPC561-4 will occur.
XFC Filter Capacitor Option
PM561-4 capacitor C3 provides the XFC filtering for the PLL circuits. The capacitor should be changed by the user if PLL locking
problems are experienced at the frequency of operation selected. Current value is 3.3nF. Refer to MPC561 manual for more
information.
VDDSYN Voltage Source
The VDDSYN connection to the MPC561-4 provides CUT-AWAY pad #2 for isolation. To apply a different voltage source for low
power back-up operations, the #2 CUT-AWAY pad should be cut and the new source applied to the CMD561-4 POWER_PORT pin
for the VDDSYN connection.
KAPWR Voltage Source
The KAPWR connection to the MPC561-4 provides CUT-AWAY pad #1 for isolation. to apply a different voltage source for low
power back-up operations, #1 CUT-AWAY pad should be cut and the new source applied to the CMD561-4 POWER_PORT pin for
the KAPWR connection.
VRH and VRL QADC Reference Supplies
CUT-AWAY pads #4 and #5 provide isolation of VRH and VRL reference signals respectfully. One or both of these pads can be
cut to apply an external reference voltage to the CMD-561-4 QADC_A Port.
EPEE and BOEPEE CUTAWAY #3
The PM-563-4 board has the EPEE and BOEPEE signals connected by CUT_AWAY pad #3. This connection is for NEXUS port
programming of the CMFI flash. This connection will cause the CONFIG_SW position 5 or 6 to enable both signals. If this is
connection not desired by the user, cut the CUT-AWAY #3 pad.
PORESET CUT-AWAY #6
The PM-561-4 board provides a 5V Voltage Level Detector to operate the PORRESET signal from power on and provide a 300ms
PORESET signal duration when the PORESET switch is applied. For external application of a PORESET signal, the user should
cut the CUT-AWAY #6 pad and use the CMD-561-4 CONTROL_PORT connection to apply the external PORESET signal.
PM561/2/3/4-T Options
•
#3 CUT-AWAY -
VFLASH signal, Internal flash array voltage source option.
•
#4 CUT-AWAY -
EPEE / BOEPEE signal, option to separate the signals.
•
#5 CUT-AWAY -
PORESET signal, option to remove 5V reset generator.
•
R3 /R30 Resistors -
VDDSRAM voltage source and current options.
•
R4 / 5 Resistors -
QADC VRL and VRH reference voltage options.
•
R20 / 21 Resistors -
VFLS1 signal selection for BDM Port option.
•
R23 / 24 Resistors -
VFLS0 signal selection for BDM Port option.
•
C3 XFC Filter -
PLL operation XFC filter capacitor.
