MAX6876 datasheet(33/39 Pages) MAXIM

33 / 39 page

EEPROM-Programmable, Quad,

Power-Supply Tracker/Sequencer Circuit

______________________________________________________________________________________

ADDRESS

EEPROM MEMORY

ADDRESS

READ/WRITE

DESCRIPTION

07h

27h

R/W

IN4 Overvoltage Threshold Value (VTH):

VTH = 1.0 + n x 20mV (if R08[4] = 0)

VTH = 0.5 + n x 10mV (if R08[4] = 1)

where n is the register content decimal representation. Note that VTH

ranges must be 1V to 5.5V and 0.5V to 3.05V, respectively.

Bit 7—If 0, 20mV steps in VTH setting for IN1

If 1, 10mV steps in VTH setting for IN1

Bit 6—If 0, 20mV steps in VTH setting for IN2

If 1, 10mV steps in VTH setting for IN2

Bit 5—If 0, 20mV steps in VTH setting for IN3

If 1, 10mV steps in VTH setting for IN3

Bit 4—If 0, 20mV steps in VTH setting for IN4

If 1, 10mV steps in VTH setting for IN4

Bit 3—UV1 or OV1 Fault (read only for register address). If 1, IN1 is under

undervoltage threshold or over overvoltage threshold. If 0, IN1 is over

undervoltage threshold and under overvoltage threshold.

Bit 2—UV2 or OV2 Fault (read only for register address). If 1, IN2 is under

undervoltage threshold or over overvoltage threshold. If 0, IN2 is over

undervoltage threshold and under overvoltage threshold.

Bit 1—UV3 or OV3 Fault (read only for register address). If 1, IN3 is under

undervoltage threshold or over overvoltage threshold. If 0, IN3 is over

undervoltage threshold and under overvoltage threshold.

08h

28h

R/W

Bit 0—UV4 or OV4 Fault (read only for register address). If 1, IN4 is under

undervoltage threshold or over overvoltage threshold. If 0, IN4 is over

undervoltage threshold and under overvoltage threshold.

Bit [7:6] If “00” the device configuration is a single device

If “01” the device configuration is multiple devices, slave

If “10” the device configuration is multiple devices, slave

If “11” the device configuration is multiple devices, master

Bit 5—If 1, latch-on fault

If 0, autoretry

Bit [4:2] “000” autoretry timer value = 25µs

“001” autoretry timer value = 12.5ms

“010” autoretry timer value = 25.0ms

“011” autoretry timer value = 50.0ms

“100” autoretry timer value = 100.0ms

“101” autoretry timer value = 200.0ms

“110” autoretry timer value = 400.0ms

“111” autoretry timer value = 1600.0ms

Bit 1—If 1, check I2C enable bit

If 0, ignore I2C enable bit

09h

29h

R/W

Bit 0—If 1 and 09h[1] = 1, I2C enabled

If 0 and 09h[1] = 1, I2C disabled

Table 16. Register Map (continued)

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