Maxim-integrated MAX31782 Manual do Utilizador descarregar pdf (Página 81)

Maxim Integrated 8-13

MAX31782 User’s Guide

Revision 0; 8/11

8.2.8 SMBus Mode Selection Register (SMBUS)

Address: M3[04h]

This register contains bits that are used for both the I

C slave interface (SDA and SCL) and the I

C master interface

(MSDA and MSCL). For operation of the master interface, only the master bits should be used.

Bit

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Name —

— — — — — — — — — — —

RESET_S RESET_M SMB_MOD_S SMB_MOD_M

Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Access r r r r r r r r r r r r rw rw rw rw

BIT NAME DESCRIPTION

15:4 —

Reserved. The user should not write to these bits.

3 RESET_S This bit does not affect the master I

C interface (MSDA and MSCL).

2 RESET_M

C Master Reset Bit. This bit can be used by the software to unconditionally reset and disable the

C master interface. After at least one system clock cycle, this bit must be cleared by software.

After this bit is toggled, all the relevant I

C master registers need to be reinitialized.

1 SMB_MOD_S This bit does not affect the master I

C interface (MSDA and MSCL).

0 SMB_MOD_M

This bit enables the SMBUS timeout feature only when the master I

C interface (MSDA and MSCL)

is enabled to be a slave interface. See the 8.1.12 Operation as a Slave section for more details.

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Maxim-integrated MAX31782 Manual do Utilizador Página 81