
MOTOROLA
MSC8101ADS RevB User’s Manual
59
Functional Description
5•11•4
BCSR3 - Board Status Register 3
BCSR3 is a status register which is accessed as
word
at
offset C
from the BCSR base address.
Its a
Read-Only
register. BCSR3’s various fields are described in
TABLE 5-15. "BCSR3 Descrip-
20 - 23
BREVN(0:3)
Board Revision Number (0:3)
. This field represents the revision code,
hard-assigned to the ADS. See
TABLE 5-18. "ADS Revision Encoding"
on page 61
, for revisions’ encoding.
0
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. For the setting of dip-switch see.
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(4:1) see
TABLE
5-13. "Flash Presence Detect (7:5) Encoding" on page 59
.
-
R
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 5-
14. "Flash Presence Detect (4:1) Encoding" on page 59
.
-
R
a. There is additional bit to this field. See bit 24 in the same table.
TABLE 5-13. Flash Presence Detect (7:5) Encoding
FLASH_PD(7:5)
FLASH DELAY [nsec]
000
Not Supported
001
150
010
100/120
011
80/90
100
70 nsec
101 - 111
Not Supported
TABLE 5-14. Flash Presence Detect (4:1) Encoding
FLASH_PD(4:1)
Flash TYPE / SIZE
0000
SM73288XG4JHBG0 - 32 MByte (4 banks of 4 X 2M X 8) by Smart Modular
Technology.
0001
SM73248XG2JHBG0 - 16 MByte (2 banks of 4 X 2M X 8) by Smart Modular
Technology.
0010
SM73228XG1JHBG0 - 8 MByte (1 bank of 4 X 2M X 8) by Smart Modular
Technology.
0011 - 1111
Not Supported
TABLE 5-12. BCSR2 Description
BIT
MNEMONIC
Function
DEF
SET
ATT.
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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