MAX5970ETX+ Maxim Integrated Products, MAX5970ETX+ Datasheet - Page 36

• Manufacturer Part Number: MAX5970ETX+
• Description: IC CTLR HOT-SWAP DUAL 36TQFN
• Manufacturer: Maxim Integrated Products
• Type: Hot-Swap Controllerr

Specifications of MAX5970ETX+

• Applications: General Purpose, PCI Express
• Internal Switch(s): No
• Voltage - Supply: 2.7 V ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 53 shows LED State register. The LED State regis-
ter is a read-only register. When the LEDs are disabled,
the pins are configured as GPIOs. Applying an external
voltage below 0.4V sets the GPIOs low and, applying an
external voltage above 1.4V, sets the GPIOs high.
The MAX5970 features an I
ing of a serial-data line (SDA) and a serial-clock line
0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
Table 53. LED State Register
Table 54. MAX5970 Slave Address Settings
36
Description:
Register Title:
Register Address:
ADDRESS INPUT
Open
Open
Open
High
High
High
Low
Low
Low
A1
_____________________________________________________________________________________
bit 7
—
R
STATE
Open
Open
Open
High
High
High
Low
Low
Low
A0
bit 6
—
R
ADDR 7
0
0
0
0
0
0
0
0
0
LED State register
LED_State
0x45
2
C serial interface consist-
I
bit 5
2
—
R
C Serial Interface
ADDR 6
1
1
1
1
1
1
1
1
1
bit 4
ADDR 5
—
R
1
1
1
1
1
1
1
1
1
Voltage
LED4
ADDR 4
bit 3
I
2
R
C ADDRESS BITS
(SCL). SDA and SCL allow bidirectional communication
between the MAX5970 and the master device at clock
rates from up to 400kHz. The I
devices (e.g., more than one MAX5970, or other I
devices in addition to the MAX5970) attached simultane-
ously. The A0 and A1 inputs set one of nine possible I
addresses (see Table 54).
1
1
1
0
0
0
0
0
0
ADDR 3
Voltage
LED3
bit 2
R
0
0
0
1
1
1
0
0
0
ADDR 2
Voltage
LED2
bit 1
1
0
0
1
0
0
1
0
0
R
2
C bus can have several
ADDR 1
Voltage
LED1
bit 0
0
1
0
0
1
0
0
1
0
R
ADDR 0
VALUE
RESET
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
2
2
C
C