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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.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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