MAX34441EVKIT# Maxim Integrated, MAX34441EVKIT# Datasheet - Page 17

• Manufacturer Part Number: MAX34441EVKIT#
• Description: Power Management IC Development Tools MAX34441 Eval Kit
• Manufacturer: Maxim Integrated
• Type: PWM Controllersr
• Series: MAX34441r

Specifications of MAX34441EVKIT#

• Rohs: yes
• Product: Power Management Development Tools
• Tool Is For Evaluation Of: MAX34441
• Interface Type: I2C
• Maximum Operating Temperature: + 85 C
• Part # Aliases: 90-34441#K00

The device supports the group command. With the
group command, a host can write different data to
multiple devices on the same serial bus with one long
The device responds to receiving its fixed slave address
by asserting an acknowledge (ACK) on the bus. The
device does not respond to a general call address; it
only responds when it receives its fixed slave address.
The only exception to this operation is if the ALERT
output is enabled (ALERT bit = 1 in MFR_MODE) and
ALERT has been asserted. When this condition occurs,
the device only recognizes the alert response address
(0001 100, 18h). See the ALERT and Alert Response
Address (ARA) section for more details.
If the ALERT output is enabled (ALERT bit = 1 in
MFR_MODE), when a fault occurs the device asserts the
ALERT signal and then waits for the host to send the alert
ALERT and Alert Response Address (ARA)
SLAVE_ADDRESS,_COMMAND_BYTE,_AND_DATA_WORD_FOR_DEVICE_1
SLAVE_ADDRESS,_COMMAND_BYTE,_AND_DATA_BYTE_FOR_DEVICE_2
SLAVE_ADDRESS_AND_SEND_BYTE_FOR_DEVICE_3
U U U
SLAVE_ADDRESS,_COMMAND_BYTE,_AND_DATA_WORD_FOR_DEVICE_N
Sr
Sr
Sr
S
1
1
1
1
ADDRESS
ADDRESS
ADDRESS
ADDRESS
SLAVE
SLAVE
SLAVE
SLAVE
7
7
7
7
PMBus 5-Channel Power-Supply Manager
W
W
W
W
1
1
1
1
A
1
A
1
A
A
1
1
COMMAND
COMMAND
COMMAND
COMMAND
Group Command
CODE
CODE
CODE
CODE
8
8
8
8
Addressing
and Intelligent Fan Controller
A
1
A
A
A
1
1
1
DATA BYTE
DATA BYTE
DATA BYTE
LOW
LOW
U U U
8
8
8
continuous data stream. All the devices addressed dur-
ing this transaction wait for the host to issue a STOP
before beginning to respond to the command.
response address (ARA) as shown in the Alert Response
Address (ARA) Byte Format section. While_ waiting_ for_
the_ ARA,_ the_ device_ does_ not_ respond_ to_ its_ fixed_
slave_address.
When the ARA is received and the device is asserting
ALERT, the device ACKs it and then attempts to place
its fixed slave address on the bus by arbitrating the
bus, since another device could also try to respond to
the ARA. The rules of arbitration state that the lowest
address device wins. If the device wins the arbitration,
it deasserts ALERT and begins to respond to its fixed
slave address. If the device loses arbitration, it keeps
ALERT asserted and waits for the host to once again
send the ARA.
A
1
1
A
A
1
DATA BYTE
DATA BYTE
HIGH
HIGH
U U U
8
8
A
1
1
A
KEY:
S = START
Sr = REPEATED START
P = STOP
W = WRITE BIT (0)
A = ACKNOWLEDGE (0)
SHADED BLOCK = SLAVE TRANSACTION
Group Command Write Format
1
P
U U U
17