Motorola MSC8101 ADS User Manual download pdf (Page 58)

58 MSC8101ADS RevB User’s Manual MOTOROLA

Functional Description

TABLE 5-11. Peripheral’s Availability Decoding.

5•11•3 BCSR2 - Board Control / Status Register 2

BCSR2 is a status register which is accessed as word at offset 8 from the BCSR base address.

Its a Read-Only register which may be read at any time. BCSR2’s various fields are described in

TABLE 5-12. "BCSR2 Description" on page 58

Enable to:

BCSR Control Bits

FETHIEN

1.4

T1_1EN

0.3

T1_234EN

0.4

CODEC_EN

1.1

CODEC

a. Power-on default mode is enable for CODEC and disable for the

rest peripherals.

xx x 0

T1/E1

channels

2-4

0 x

FETH 0 x x x

T1/E1

channel

x0 x 1

TABLE 5-12. BCSR2 Description

BIT MNEMONIC Function

DEF

SET

ATT.

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.

-R

8 - 11 TOOLREV(0:3) Tool Revision (0:3). This field may contains the revision code of an

external tool connected to the ADS. The various combinations of this field

will be described per each tool user’s manual. These signals are available

at the System Expansion connector.

-R

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 5-16.

"EXTOOLI(0:3) Assignment" on page 61

-R

16 - 17 SWOPT(0:1)

Software Option (0:1). Two bits shows the state of a dedicated dip-

switches providing an option to manually change a program flow.

18 HOSTCFG

Host Configuration Set. This is high when the MSC8101 is configured for

PPC bus Normal Mode, if low - Host I/F is enable.

1 R

19 B64_32 Data Bus 64/32 bit. This line is connected to address mux switch for

manually setting the PPC bus width. When it is high the PPC bus is 64-bit

width, if low - 32-bit width.

1 R

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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