Motorola ATCA-717 用户手册

Bit

Access

Default

Description

4

Select status of default and backup boot
flash write protection
0: Write−protection determined by
on−board switches
1: Write−protection determined by this
register

0

2

r

6:5

Indicates flash that is booted from
00

2

: Default boot flash

01

2

: Backup boot flash

00

2

r

7

Crisis recovery (indicates status of crisis
recovery switch)
0: Crisis recovery
1: Normal operation

1

2

r

This register, which is accessible via the index address 0x03, allows to control the bicolor
face plate HDD LED. This LED can be operated in parallel/serial ATA status indication
mode and user mode. Toggling between both modes is possible via this register.

a

In parallel/serial ATA status indication mode the LED shines GREEN and indicates the
combined activitiy of all serial and parallel ATA interfaces. In user mode, the LED can be
controlled to be red, green and OFF.

aaa

Table 26:

 LED Control Register

Bit

Description

Default

Access

1..0

Controls LED in user mode
00

2

: OFF

01

2

: Red

10

2

: Green

11

2

: Reserved

01

2

r/w

2

Toggles between user mode and parallel/serial ATA
status indication mode
0: User mode
1: Parallel/serial ATA status indication mode

0

2

r/w

3

General purpose output on connector P30/pin A3
0: O/P is low
1: O/P is open

1

2

r/w

6

Serial COM interface swapping
0

2

: No swapping

1

2

: COM 1 is swapped with COM3, and COM 2 is

swapped with COM 4

1

2

r

7..5

Reserved

000

2

r