PCI Backplane and Enclosure

 

 

 

 

Table D-2 Configuration switches

 

 

 

 

 

 

 

 

Switch

Signal

Description

 

 

 

 

 

 

 

 

SW1-1

MAN1nMAN2

Determines the clock rate when SW1[1] is in the

 

 

 

Manual position. See Setting the backplane

 

 

 

configuration switches on page D-4.

 

 

 

 

 

 

 

SW1-2

MANnAUTO

Selects between manual (ON) or automatic (OFF) clock

 

 

 

selection

 

 

 

 

 

 

 

 

SW2-1

nINCPLD

Omits (ON) or includes (OFF) the PLD in the scan

 

 

 

chain.

 

 

 

 

 

 

 

 

SW2-2

TESTnEN

Omits (ON) or includes (OFF) the PCI sockets in the

 

 

 

scan chain.

 

 

 

 

 

 

 

 

 

 

 

Table D-3 Power and reset switches

 

 

 

 

 

 

 

 

Switch

Signal

Description

 

 

 

 

 

 

 

 

SW3

PSON

Power on/off pushbutton. Pressing the switch

 

 

 

toggles the power between on and standby. SW3

 

 

 

signals are also connected to J6 and this enables the

 

 

 

use of an external front-panel switch.

 

 

 

 

 

 

SW4

SYSTEM_nRESET

System reset pushbutton. Pressing the switch

 

 

 

generates a reset to the PCI arbiter on the

 

 

 

backplane and all of the PCI cards. SW4 signals are

 

 

 

also connected to J7 and this enables the use of an

 

 

 

external front-panel switch.

 

 

 

 

 

 

 

 

 

 

 

 

Table D-4 Test points

 

 

 

 

 

 

 

 

 

 

 

Test point

Signal

Description

 

 

 

 

 

 

 

 

 

 

 

TP1

GND

Ground

 

 

 

 

 

 

 

 

 

 

 

TP2

GND

Ground

 

 

 

 

 

 

 

 

 

 

 

TP3

TCLK

JTAG clock

 

 

 

 

 

 

 

 

 

 

 

TP4

PCI CLK

PCI clock

 

 

 

 

 

 

 

D-8

Copyright © 2003-2010 ARM Limited. All rights reserved.

ARM DUI 0224I

Page 346
Image 346
ARM ARM DUI 0224I manual Table D-2 Configuration switches, Switch Signal Description, Table D-3 Power and reset switches