8

4952E–AUTO–10/08

ATA6836 [Preliminary]

Table 3-2.

Output Data Protocol

Bit

Output (Status)

Register

Function

0TP

Temperature prewarning: high = warning

(overtemperature shutdown see remark below)

1

Status LS1

Normal operation: high = output is on, low = output is off

Open-load detection: high = open load, low = no open load

(correct load condition is detected if the corresponding output is

switched off)

2

Status HS1

Normal operation: high = output is on, low = output is off

Open-load detection: high = open load, low = no open load

(correct load condition is detected if the corresponding output is

switched off)

3

Status LS2

Description see LS1

4

Status HS2

Description see HS1

5

Status LS3

Description see LS1

6

Status HS3

Description see HS1

7

Status LS4

Description see LS1

8

Status HS4

Description see HS1

9

Status LS5

Description see LS1

10

Status HS5

Description see HS1

11

Status LS6

Description see LS1

12

Status HS6

Description see HS1

13

SCD

Short circuit detected: set high, when at least one output is switched off

by a short circuit condition

14

INH

Inhibit: this bit is controlled by software (bit SI in input register) and

hardware inhibit (pin INH). High = standby, low = normal operation

15

PSF

Power supply fail: undervoltage at pin VS detected

Note:

Bit 0 to 15 = high: overtemperature shutdown

Table 3-3.

Status of the Input Register After Power on Reset

Bit 15

(SI)

Bit 14

(SCT)

Bit 13

(OLD)

Bit 12

(HS6)

Bit 11

(LS6)

Bit 10

(HS5)

Bit 9

(LS5)

Bit 8

(HS4)

Bit 7

(LS4)

Bit 6

(HS3)

Bit 5

(LS3)

Bit 4

(HS2)

Bit 3

(LS2)

Bit 2

(HS1)

Bit 1

(LS1)

Bit 0

(SRR)

H

H

H

L

LLLLLLL

LL

L

L

L