Motorola MSC8101 ADS User Manual download pdf (Page 59)

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,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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