TPS2340A

SLUS528A – MARCH 2002 – REVISED AUGUST 2002

16

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APPLICATION INFORMATION

operational mode input channel address grouping

Table 5. lists the functions assigned to the channel addresses.

Table 5. Operational Mode Channel Address Grouping

CHANNEL

ADDRESS

FUNCTIONAL CHANNEL GROUP

00

Interrupt capable inputs

01

Non–interrupt capable inputs

10

Diagnostic data #1

11

Diagnostic data #2

As devices are cascaded, SIDI pin data is received from devices down-stream and passes through the device,

shift-register style, to eventually reach the SIDO pin and the PCI hot-plug controller. The data contained in each

input channel group is described in Tables 6, 7, 8, and 9.

Table 6. Channel 00 Data Group – Interrupt Capable Inputs

BIT

NUMBER

FUNCTION

0

Slot A SW (1 = interlock A open)

1

Slot A button state (1 = button A pushed)

2

Slot A power fault state (PwrfltA & AuxfltA)

3

Slot A PRSNT2

4

Slot A PRSNT1

5

Reserved

6

Reserved

7

Reserved

8

Slot B SW

9

Slot B button state

10

Slot B power fault state (PwrfltB & AuxfltB)

11

Slot B PRSNT2

12

Slot B PRSNT1

13

Reserved

14

Reserved

15

Reserved

16

…47

SIDI pin data for slots C, D, E and F follows