MAX1363 Datasheet, PDF (13/24 Pages) Maxim Integrated Products – 4-Channel, 12-Bit System Monitors with Programmable Trip Window and SMBus Alert Response

4-Channel, 12-Bit System Monitors with Programmable
Trip Window and SMBus Alert Response
SLAVE ADDRESS
S
0
1
1
0
1
0
0
R/W
ACK
SDA
SCL
1
2
3
4
5
6
7
8
9
Figure 6. MAX1363/MAX1364 Slave Address Byte
Table 1. I²C Slave Selection Table
A0 STATE
Low
High
Low
High
Low
High
SUFFIX
EUB
EUB
LEUB
LEUB
MEUB
MEUB
ADDRESS
0110100
0110101
0110010
0110011
0110110
0110111
unsuccessful data transfers. An unsuccessful data trans-
fer happens if a receiving device is busy or if a system
fault has occurred. In the event of an unsuccessful data
transfer, the bus master reattempts communication at a
later time.
Slave Address
The MAX1363/MAX1364 have a 7-bit I²C slave
address. The slave address is selected using A0. The
MAX1363/MAX1364 (EUB, MEUB, and LEUB) have
three base address options, allowing up to six devices
concurrently per I²C bus (see Table 1).
The MAX1363/MAX1364 continuously wait for a START
condition followed by its slave address. When the device
recognizes its slave address, it is ready to accept or
send data depending on the R/W bit (Figure 6).
HS I²C Mode
At power-up, the MAX1363/MAX1364 bus timing is set
for fast mode (F/S mode, up to 400kHz I²C clock), which
limits the conversion rate to approximately 22ksps.
Switch to high-speed mode (HS mode, up to 1.7MHz
I²C clock) to achieve conversion rates up to 94.4ksps.
The MAX1363/MAX1364 convert up to 133ksps in moni-
tor mode, regardless of I²C mode. If conversion results
are unread, I²C bandwidth limitations do not apply (see
the Monitor Mode section).
Select HS mode by addressing all devices on the bus
with the HS-mode master code 0000 1XXX (X = don’t
care). After successfully receiving the HS-mode master
code, the MAX1363/MAX1364 issue a NACK, allowing
SDA to be pulled high for one clock cycle (Figure 7).
After the NACK, the MAX1363/MAX1364 operate in HS
mode. Send a repeated START (Sr) followed by a slave
address to initiate HS-mode communication. If the mas-
ter generates a STOP condition, the MAX1363/
MAX1364 return to F/S mode. Use a repeated START
condition (Sr) in place of a STOP condition to leave the
bus active and the mode unchanged.
S
0
SDA
HS-MODE MASTER CODE
0
0
0
1
X
X
X
NACK
Sr
SCL
Figure 7. F/S-Mode to HS-Mode Transfer
F/S MODE
HS MODE
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