MC68332 REGISTER SUMMARY
USER’S MANUAL D-5
Y = M111, where M is the logic state of the module mapping (MM) bit in the SIMCR.
D.2.1 SIMCR — Module Configuration Register $YFFA00
SIMCR controls system configuration. SIMCR can be read or written at any time, ex-
cept for the module mapping (MM) bit, which can only be written once.
EXOFF — External Clock Off
0 = The CLKOUT pin is driven from an internal clock source.
1 = The CLKOUT pin is placed in a high-impedance state.
FRZSW — Freeze Software Enable
0 = When FREEZE is asserted, the software watchdog and periodic interrupt timer
counters continue to run.
1 = When FREEZE is asserted, the software watchdog and periodic interrupt timer
counters are disabled, preventing interrupts during software debug.
FRZBM — Freeze Bus Monitor Enable
0 = When FREEZE is asserted, the bus monitor continues to operate.
1 = When FREEZE is asserted, the bus monitor is disabled.
SLVEN — Factory Test Mode Enabled
0 = IMB is not available to an external master.
1 = An external bus master has direct access to the IMB.
SHEN[1:0] — Show Cycle Enable
This field determines what the EBI does with the external bus during internal transfer
operations.
S $YFFA5E CHIP-SELECT OPTION 4 (CSOR4)
S $YFFA60 CHIP-SELECT BASE 5 (CSBAR5)
S $YFFA62 CHIP-SELECT OPTION 5 (CSOR5)
S $YFFA64 CHIP-SELECT BASE 6 (CSBAR6)
S $YFFA66 CHIP-SELECT OPTION 6 (CSOR6)
S $YFFA68 CHIP-SELECT BASE 7 (CSBAR7)
S $YFFA6A CHIP-SELECT OPTION 7 (CSOR7)
S $YFFA6C CHIP-SELECT BASE 8 (CSBAR8)
S $YFFA6E CHIP-SELECT OPTION 8 (CSOR8)
S $YFFA70 CHIP-SELECT BASE 9 (CSBAR9)
S $YFFA72 CHIP-SELECT OPTION 9 (CSOR9)
S $YFFA74 CHIP-SELECT BASE 10 (CSBAR10)
S $YFFA76 CHIP-SELECT OPTION 10 (CSOR10)
$YFFA78 NOT USED NOT USED
$YFFA7A NOT USED NOT USED
$YFFA7C NOT USED NOT USED
$YFFA7E NOT USED NOT USED
15 14 13 12 11 10 9 8 7 6 5 4 3 0
EXOFF FRZSW FRZBM 0 SLVEN 0 SHEN SUPV MM 0 0 IARB
RESET:
0 0 0 0 DATA
11
0 0 0 1 1 0 0 1 1 1 1
Table D-2 SIM Address Map
Access Address 15 8 7 0
Fr
ees
cale S
em
iconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
To Next Page
Loading...