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Functional Description
only register which may be read at any time1. BCSR2s’ various fields are described in Table 4-11.
Freescale Semiconductor, Inc...
Table 4-11. BCSR2 Description
PON
DEF
ATT.
-
R
BIT
MNEMONIC
Function
0-7
TSTAT(0:7)
Tool Status (0:7). This field is reserved for external tool status report. The
exact meaning of each bit within this field is tool unique and therefore will be
documented separately per each tool. These signals are available at the
System expansion connector.
8 - 11
TOOLREV(0:3)
TOOL Revision (0:3). This field may contain the revision code of an
external tool connected to the PQ2. The various combinations of this field
will be described per each tool users’ manual. These signals are available
at the System expansion connector. The revision option for the external
tools are shown in Table 4-17.
12 - 15
EXTTOLI(0:3)
External Tools Identification. These lines, which are available at the CPM
expansion connectors, are intended to serve as tools’ identifier. On-board S/
W may check these lines to detect The presence of various tools (h/w
expansions) at the CPM expansion connectors. For the external tools’
codes and their associated combinations see Table 4-14.
-
R
16 - 17
SWOPT(0:1)a
Software Option (0:1). This field shows the state of a dedicated dipswitches providing an option to manually change a program flow.
0
R
18 - 19
L2CSIZE(0:1)
L2 Cache Size (0:1). This filed encodes the size of the L2 Cache, present
on the PQ2FADS-ZU. For the encoding of the various cache sizes see
-
R
R
Table 4-18.
20 - 21
BVERN(0:1)
Board Version Number (0:1). This field represents the version code, hardassigned to the PQ2FADS-ZU. See Table 4-15., for version encoding.
11
R
22 - 23
BREVN(0:1)
Board Revision Number (0:1). This field represents the revision code,
hard-assigned to the PQ2FADS-ZU. See Table 4-16., for revisions’
encoding.
-
R
24
SWOPT2
Software Option 2. This is the LSB of the field. Shows the state of a
dedicated dip-switch providing an option to manually change a program
flow.
0
R
25 - 27
FLASH_PD(7:5)
Flash Presence Detect(7:5). These lines are connected to the Flash SIMM
presence detect lines, which encode the Delay of Flash SIMM mounted on
the Flash SIMM socket. For the encoding of FLASH_PD(7:5) see Table 4-
-
R
-
R
12.
28 - 31
FLASH_PD(4:1)
Flash Presence Detect(4:1). These lines are connected to the Flash SIMM
presence detect lines which encode the type of Flash SIMM mounted on the
Flash SIMM socket. For the encoding of FLASH_PD(4:1) see Table 4-13.
a. There is additional bit to this field. See next on the same table.
1. Provided that BCSR is not disabled.
MOTOROLA
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