Rainbow-electronics DS1780 Manual de usuario descargar pdf (Pagina 17)

DS1780

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CONFIGURATION REGISTER (ADDRESS 0X40; POWER-UP DEFAULT = 08h)

Table 10.2

BIT NAME R/W DESCRIPTION

0 START R/W

Logic 1 enables startup of measurement loop, logic 0 places the DS1780 in standby mode.

Caution: The

INT output pin will not be cleared if the user writes a 0 to this location after an

interrupt has occurred (see “

INT Clear” bit). At startup, limit checking functions and

scanning begins. Note, all HIGH and LOW LIMITS should be set into the DS1780 prior to

turning on this bit. (Power-up default=0).

1INT EnableR/W

Logic 1 enables the

INT output. 1=Enabled 0=Disabled (Power-up Default = 0)

2 Reserved R/W Power-up Default = 0.

3 INT Clear R/W

During Interrupt Service Routine (ISR) this bit asserted logic 1 clears

INT output without

affecting the contents of the Interrupt Status Registers. The device will stop monitoring. It

will resume upon clearing of this bit. (Power-up default=1.)

4 RESET R/W

Creates a RESET (Active Low) signal for 20 ms (min) on the

RST output. (Power-up

default = 0) This bit is cleared once the

RST pulse goes active.

5 Reserved R/W Power-up Default = 0.

6CHS ResetR/W

Logic 1 resets the chassis intrusion pin. (Power-up default = 0) This bit is cleared after CHS

becomes cleared.

7 Initialization R/W

Logic 1 restores power-up default values to all DS1780 registers except for the analog

output and value RAM, which remain unchanged. This bit automatically clears itself since

the power on default is 0.

INTERRUPT INT STATUS REGISTER 1 (ADDRESS 0X41; POWER-UP

DEFAULT = 00h) Table 10.3

BIT NAME R/W DESCRIPTION

0 +2.5V_Error R A 1 indicates a High or Low limit has been exceeded.

CCP1

_Errror R A 1 indicates a High or Low limit has been exceeded.

2 +3.3V_Error R A 1 indicates a High or Low limit has been exceeded.

3 +5V_Error R A 1 indicates a High or Low limit has been exceeded.

4 Temp_Error R

A 1 indicates that a high or low temperature limit has been exceeded. The conditions that

will generate and clear this bit depend upon the temperature interrupt mode chosen. The

mode is set at bits 0 and 1 of the Temperature Configuration Register (0x48h).

5 Reserved R 0

6 FAN1_Error R A 1 indicates that a fan count limit has been exceeded.

7 FAN2_Error R A 1 indicates that a fan count limit has been exceeded.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 27 28

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Rainbow-electronics DS1780 Manual de usuario Pagina 17

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