MCP8024 datasheet(27/46 Pages) MICROCHIP

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 2013 Microchip Technology Inc.

DS20005228A-page 27

MCP8024

TABLE 4-3:

DE2 COMMUNICATIONS MESSAGES FROM MCP8024 TO HOST

MESSAGE

BYTE BIT

VALUE

DESCRIPTION

STATUS_0

17:0 00000101 (05H)

01000101

(45H)

10000101

(85H)

Status Register 0 Response Not Acknowledged (Response)

Status Register 0 Response Acknowledged (Response)

Status Register 0 Command To Host (Unsolicited)

27:0 00000000

Normal Operation

00000001

Temperature Warning (TJ > 125°C (Default Warning Level))

00000010

Over Temperature (TJ > 160°C)

00000100

Input Undervoltage (VDD < 5.5V)

00001000

Reserved

00010000

Input Overvoltage (VDD > 32V)

00100000

Buck Regulator Overcurrent

01000000

Buck Regulator Output Undervoltage Warning

10000000

Buck Regulator Output Undervoltage (< 80%,brown-out error)

STATUS_1

17:0 00000110 (06H)

01000110

(46H)

10000110

(86H)

STATUS Register 1 Response Not Acknowledged (Response)

STATUS Register 1 Response Acknowledged (Response)

STATUS Register 1 Command To Host (Unsolicited)

27:0 00000000

Normal Operation

00000001

5V LDO Overcurrent

00000010

12V LDO Overcurrent

00000100

External MOSFET Undervoltage Lock Out (UVLO)

00001000

External MOSFET Overcurrent Detection

00010000

Brown-out Reset – Config Lost (Start-up default = 1)

00100000

Not Used

01000000

Not Used

10000000

Not Used

SET_CFG_0

17:0 00000001 (01H)

01000001

(41H)

Set Configuration Register 0 Not Acknowledged (Response)

Set Configuration Register 0 Acknowledged (Response)

Unused (Start-up Default)

Disable Disconnection of 30K Level Translator Pullup when CE = 0

(Default)

Enable Disconnection of 30K Level Translator Pullup when CE = 0

Unused

Reserved

Undervoltage Lockout Enabled (Default)

Undervoltage Lockout Disabled

External MOSFET Overcurrent Detection Enabled (Default)

External MOSFET Overcurrent Detection Disabled

1:0 00

0.250V External MOSFET Overcurrent Limit (Default)

0.500V External MOSFET Overcurrent Limit

0.750V External MOSFET Overcurrent Limit

1.000V External MOSFET Overcurrent Limit

GET_CFG_0

17:0 00000010 (02H)

01000010

(42H)

Get Configuration Register 0 Response Not Acknowledged

(Response)

Get Configuration Register 0 Response Acknowledged (Response)

Unused (Start-up Default)

Disable Disconnection of 30K Level Translator Pullup when CE = 0

(Default)

Enable Disconnection of 30K Level Translator Pullup when CE = 0

Unused

Reserved

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