max5970 Maxim Integrated Products, Inc., max5970 Datasheet - Page 41

• Manufacturer Part Number: max5970
• Description: 0v To 16v, Dual Hot-swap Controller With 10-bit Current And Voltage Monitor And 4 Led Drivers
• Manufacturer: Maxim Integrated Products, Inc.

Use the send byte protocol to set the register address
pointers before read and write operations. For the con-
figuration registers, valid address pointers range from
0x00 to 0x45, and the circular buffer addresses are 0x46
to 0x49. Register addresses outside of this range result
in a NACK being issued from the MAX5970.
The circular buffer read operation is similar to the receive
byte operation. The read operation is triggered after any
one of the circular buffer base addresses is loaded.
During a circular buffer read, although all is transparent
from the external world, internally the auto increment
function in the I
sible to read one of the circular buffer blocks with a burst
read without changing the virtual internal address corre-
sponding to the base address. Once the master issues
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
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0V to 16V, Dual Hot-Swap Controller with 10-Bit
Table 55. Circular Buffer Readout Sequence
PROCESS: BiCMOS
Chronological Number
2010 Maxim Integrated Products
Current and Voltage Monitor and 4 LED Drivers
READ-OUT ORDER
2
C controller is disabled. Thus, it is pos-
Chip Information
1
ST
Circular Buffer Read
1
OUT
Address Pointers
2
ND
2
OUT
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a NACK, the circular reading stops, and the default
functions of I
read mode, every I
sample from the circular buffer. In 10-bit mode, two
subsequent I
sample from the circular buffer, with the high-order byte
read first, followed by a byte containing the right-shifted
two least-significant bits. Once the master issues a
NACK, the read circular buffer operation terminates and
normal I
The data in the circular buffers is read back with the
next-to-oldest sample first, followed by progressively
more recent samples until the most recent sample is
retrieved, followed finally by the oldest sample (see
Table 55).
For the latest package outline information and land pat-
terns, go to www.maxim-ic.com/packages. Note that
a “+”, “#”, or “-” in the package code indicates RoHS
status only. Package drawings may show a different suf-
fix character, but the drawing pertains to the package
regardless of RoHS status.
PACKAGE TYPE
…
…
36 TQFN-EP
2
C operation returns.
2
2
C slave bus controller are restored. In 8-bit
48
C read operations shift out a single 10-bit
TH
48
OUT
2
PACKAGE CODE
C read operation shifts out a single
Package Information
T3666-3
49
TH
49
OUT
DOCUMENT NO.
21-0114
50
TH
0
OUT
41