CDR3 Flash (UC3F) EEPROM
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
21-17
Table 21-6. RCW Bit Descriptions
Bits
Name
Description
0
EARB
External arbitration — Refer to
Section 9.5.7, “Arbitration Phase
” for a detailed description of Bus
arbitration. The default value is that internal arbitration hardware is used.
0 Internal arbitration is performed
1 External arbitration is assumed
1
IP
Initial interrupt prefix — This bit defines the initial value of the MSR[IP] immediately after reset. The
MSR[IP] bit defines the Interrupt Table location.
0 MSR[IP] = 0 after reset
1 MSR[IP] = 1 after reset
The default value is 0. See
for more information.
2
BDRV
Bus pins drive strength — This bit determines the bus pins’ (address, data, and control) driving
capability to be either full or reduced drive. The bus default drive strength is full; upon default, it also
causes the CLKOUT drive strength to be full. See
for more information. BDRV controls the
default state of COM[1] in the SIUMCR.
0 Full drive
1 Reduced drive
3
BDIS
Boot disable — If the BDIS bit is set, then memory controller is not activated after reset. If it is cleared
then the memory controller bank 0 is active immediately after reset such that it matches any addresses.
If a write to the OR0 register occurs after reset this bit definition is ignored. The default value is that the
memory controller is enabled to control the boot with the CS0 pin. See
” for more information.
0 Memory controller bank 0 is active and matches all addresses immediately after reset
1 Memory controller is not activated after reset.
4:5
BPS
Boot port size — This field defines the port size of the boot device on reset (BR0[PS]). If a write to the
OR0 register occurs after reset this field definition is ignored. See
and
for more
information.
00 32-bit port (default)
01 8-bit port
10 16-bit port
11 Reserved
6:8
—
Reserved. These bits must not be high in the reset configuration word.
9:10
DBGC[0:1]
Debug pins configuration — See
Section 6.2.2.1.1, “SIU Module Configuration Register (SIUMCR)
” for
this field definition. The default value is that these pins function as: VFLS[0:1], BI, BR, BG and BB. See
.
11
—
Reserved.
12
ATWC
Address type write enable configuration — The default value is that these pins function as WE pins.
0 WE[0:3]/BE[0:3]/AT[0:3] functions as WE[0:3]/BE[0:3]
1 WE[0:3]/BE[0:3]/AT[0:3] functions as AT[0:3]
See
13:14
EBDF
External bus division factor — This field defines the initial value of the external bus frequency. The
default value is that CLKOUT frequency is equal to that of the internal clock (no division). See
15
IWS
Interlock write select — This bit determines which interlock write operation should be used during the
clear censorship operation.
IWS always comes from the UC3FCFIG, it will never use the external reset configuration word
(RSTCONF=0) or the default internal reset configuration word (RSTCONF=1 and HC=1).
0 Interlock write is a write to any UC3F array location
1 Interlock write is a write to the UC3FMCR register.
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...