AS3606 datasheet(55/71 Pages) AMSCO

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Revision 1.03

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AS3606 AS3607 2v2

Data Sheet - R e g i s t e r D e f i n i t i o n

Table 45. SYSTEM Register

Name

Base

Default

SYSTEM

2-wire serial

51h

Offset: 20h

SYSTEM Register

This register is reset at a VDD27-POR or XRES input.

Bit

Bit Name

Default

Access

Bit Description

7:4

Design_Version<3:0>

0101

Number to identify the design version

0101: for chip version 2v2

n/a

JTEMP_SUP_OFF

R/W

Junction temperature supervision (level can be set in register 21h)

0: temperature supervision enabled

1: temperature supervision disabled

I2C_WD_ON

R/W

2-wire serial interface watchdog

To reset the watchdog counter a 2-wire serial read operation has to be

performed at least every 500ms. If the watchdog counter is not reset, the

PMU will be powered down.

0: watchdog is disabled

1: watchdog is enabled

PWR_HOLD

R/W

0: power up hold is cleared and PMU will power down

1: is automatically set to on after power on

Table 46. SUPERVISOR1 Register

Name

Base

Default

SUPERVISOR1

2-wire serial

00h

Offset: 21h

SUPERVISOR Register 1

This register is reset at a VDD27-POR or XRES input.

Bit

Bit Name

Default

Access

Bit Description

7:6

PWRUP_SD_XRES

<1:0>

R/W

Applying a high signal on PWRUP pin for about 8s will

00: perform a reset cycle

01: have no effect

10: initiate a shut-down

11: initiate a shut-down

SD_XRES_TIME

R/W

Halfs the time from pulling PWRUP high to XRES or SD

0: 8s

1: 4s

4:0

JTEMP_SUP<4:0>

R/W

Sets the threshold for junction temperature emergency shutdown and

junction temperature interrupt

Invoke shutdown at: JTemp_SD=140-JTEMP_Sup*5ºC

Invoke interrupt at: JTemp_IRQ=120-JTEMP_Sup*5ºC

JT_Sup

00000

00001

11110

11111

IRQ

120°C

115°C

-30°C

-35°C

Shutdown

140°C

135°C

-10°C

-15°C

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