Stand-Alone, 10-Channel, 10-Bit System Monitors

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17

Read Global Configuration Register

(Command Code 0101)

The Read Global Configuration Register command,

0101, outputs the global configuration registers. The

address bits following this command are ignored. When

the MAX1153/MAX1154 receive a Read Global

Configuration Register command, they output 5 bytes

of data: 2 bytes from the channel enable register, 2

bytes from the input configuration register, and 1 byte

from the setup register, all MSB first. See the

Global

Configuration Registers section for more details.

RESET (Command Code 0111)

The RESET command, 0111, resets the device. This

command returns the MAX1153/MAX1154 to their

power-on reset state, placing the device into shutdown

mode. The address bits in the command are ignored.

See the

Power-Up/Reset Defaults Summary section for

more details.

Clear Channel Alarm for Selected Channel

(Command Code 1000)

The Clear Channel Alarm command, 1000, clears the

alarm bits in the alarm register and resets the fault

counter for the addressed channel. See the

Alarm

Register section for more details. See Table 3 for chan-

nel addresses.

Clear Alarm Register for All Channels

(Command Code 1001)

The Clear Alarm Register for All Channels command,

1001, clears the entire alarm register and resets the

monitor, and the AIN0–AIN7 channels. The address bits

in the command are ignored. See the

Alarm Register

section for more details.

Write Current Data Register for Selected

Channel (Command Code 1010)

The Write Current Data Register for Selected Channel

command, 1010, writes to the addressed channel’s cur-

rent data register. This command sets an initial condi-

tion when using the averaging filter option (see the

Averaging section). This command can also be used

for testing the thresholds, fault counters, and alarm

functions (see Figure 8). See Table 3 for channel

addresses.

Write Current Data Register for All

Channels (Command Code 1011)

The Write Current Data Register for All Channels com-

mand, 1011, writes to the current data registers of all

channels sequentially, starting with the internal temper-

nels AIN0 to AIN7. The address bits are ignored. Use

this command for testing and setting initial conditions

when using the averaging filter option (see the

Averaging section).

C3

C2

C1 C0

A2

A1

A0

D11 D10 D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

SCLK

DIN

DOUT

A3

CS

Figure 8. Serial Register Write Timing