Chapter 2. Initialization and Setup
2-9
MPC566EVB Jumper and Switch Setup
configuration options are only presented to the data bus during Hard Reset if enabled by CONFIG
switch position 1. Note that MAP switch also has positions (5 and 8) that are part of the Reset
Configuration Word. All other RCW options can be located on the RW test pads, see RW options
for description of how to apply. The Reset Configuration Word options are all defaulted to logic 0
when the CONFIG Switches are in the OFF position. For more information on the MPC566 Reset
Configuration Word refer to the Reset Chapter in the MPC566 users manual.
Five bits are available
on CONFIG_SW (see Table 2-3).I
Notes:
1) Position 1 should be ON at all times until the MPC566 internal flash RCW word is pro-
grammed. This switch will cause the external value RCW to override the internal flash value of
the RCW word.
2) Position 7 and 8 must be enabled for MPC566 internal flash erase or programming operations.
3) All other external RCW bits are provided with the RW hardware options.
RW0 – 30: External Reset Configuration Word (RCW) Options
Table 2-3. CONFIG_SW
Switch
Name
MPC565/566
Function
Function
1
CFG_EN
RST_CONF
Enable External Config: This bit
enables the external reset config
0 = Internal Reset Config Word se-
lected
1 = External Reset Config Word se-
lected (default)
2
CFG1
BDIS
Data Bus 3/Boot Dis: This bit en-
ables booting from external flash
memory
0 = Boot from internal memory (de-
fault)
1 = Boot from external flash
3
CFG2
ETRE
This switch controls the Exception
Table Relocation feature
0 = Exception table relocation is off
(default)
1 = Exception table relocation is on
4
CFG3
COMP1
This switch enables Compression
Mode
0 = “Decompression ON” mode is dis-
abled (default)
1 = “Decompression ON” mode is en-
abled
5
CFG4
COMP2
This switch controls whether Ex-
ception vector code is com-
pressed
0 = MPC566 assumes that the excep-
tion routines are non-compressed
(default)
1 = MPC566 assumes that all excep-
tion routines are compressed
6
CFG5
DME
This switch enables Dual Map-
ping
0 = Dual Mapping disabled (default)
1 = Dual Mapping enabled
7
EPEE
EPEE
This pin enables erasing and pro-
gramming of the internal MPC566
flash
0 = Internal Flash P/E disabled
1 = Internal Flash P/E enabled (de-
fault)
8
B0EPEE
B0EPEE
This switch enables programming
or erasing of BLock 0 the internal
flash
0 =P/E of Block 0 disabled
1 = P/E of Block 0 enabled (default)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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