PXS20RM Datasheet, PDF (304/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Crossbar Switch (XBAR)
SGPCRn
Slave General Purpose Control Register n
Addr
$BASE + 0x010 + n*100
Wait State: 0
Access: S
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
RO HLP
HPE HPE HPE HPE HPE HPE HPE HPE
76543210
TYPE: rw rw r
r
r
r
r
r rw rw rw rw rw rw rw rw
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Note: Once the RO bit is written to a 1, only hardware reset will return it to a 0.
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
ARB
PCTL
PARK
TYPE: r
r
r
r
r
r rw rw r
r rw rw r rw rw rw
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Note: -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Note: for n = 0 to 7
Figure 15-3. Slave General Purpose Control Register n
Table 15-8. Slave General Purpose Control Register Descriptions
Name
RO
HLP
Bits 2–7
HPEx
Bits
16–21
Description
Setting
Read Only - This bit is used to force all of a slave port’s
registers to be read only. Once written to 1 it can only be
cleared by hardware reset.
This bit is initialized by hardware reset.
The reset value is 0
0 All this slave port’s registers can be
written.
1 All this slave port’s registers are read only
and cannot be written (attempted writes have
no effect and result in an error response).
Halt Low Priority - This bit is used to set the initial
arbitration priority of the max_halt_request input.
This bit is initialized by hardware reset.
The reset value is 0
0 The max_halt_request input has the
highest priority for arbitration on this slave
port
1 The max_halt_request input has the
lowest initial priority for arbitration on this
slave port.
Slave General Purpose Control Register Reserved - NA
These bits are reserved for future expansion. They read
as zero and should be written with zero for upward
compatibility.
High Priority Enable - These bits are used to enable the
mX_high_priority inputs for the respective master.
These bits are initialized by hardware reset.
The reset value is 0
0 The mX_high_priority input is disabled on
this slave port
1 The mX_high_priority input is enabled on
this slave port.
Slave General Purpose Control Register Reserved - NA
These bits are reserved for future expansion. They are
read as zero and should be written with zero for upward
compatibility.
15-10
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor