Datasheet

LTC2978A
30
2978afa
For more information www.linear.com/LTC2978A
OPERATION, MODE AND EEPROM COMMANDS
PAGE
The LTC2978A has eight pages that correspond to the eight DC/DC converter channels that can be managed. Each DC/DC
converter channel can be uniquely programmed by first setting the appropriate page.
The PAGE command provides the ability to configure, control and monitor multiple outputs on one unit.
Setting P
AGE = 0xFF a
llows a simultaneous write to all pages for PMBus commands that support global page programming.
The only commands that support PAGE = 0xFF are OPERATION and ON_OFF_CONFIG. See MFR_PAGE_FF_MASK for
additional options. Reading any paged PMBus register with PAGE = 0xFF returns unpredictable data and will trigger
a CML fault.
PAGE Data Contents
BIT(S) SYMBOL PURPOSE
b[7:0] Page Page operation.
0x00: All PMBus commands address channel/page 0.
0x01: All PMBus commands address channel/page 1.
•
•
•
0x07: All PMBus commands address channel/page 7.
0xXX: All nonspecified values reser
ved.
0xFF: A single PMBus write/send to commands that support this mode will simultaneously address all channels/pages with
MFR_PAGE_FF_MASK enabled.
PMBus COMMAND DESCRIPTION