A8296SESTR-T Allegro Microsystems Inc, A8296SESTR-T Datasheet - Page 12

• Manufacturer Part Number: A8296SESTR-T
• Description: IC REG LNB SGL SUPPLY 16-QFN
• Manufacturer: Allegro Microsystems Inc

Specifications of A8296SESTR-T

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

A8296
Control register address, and the control data, as follows:
• The Chip Address cycle consists of a total of nine bits–
• The Control Register Address cycle consists of a total of nine
• The Control Data cycle consists of a total of nine bits–eight
I
register requires transmission of a total of 36 bits–four 8-bit
bytes of data plus an Acknowledge bit after each byte. Reading
the A8296 Status register requires a chip address with R/W = 0, a
2
C™
seven bits of chip address (A6 to A0) plus one read/write bit
(R/W = 0) to indicate a write from the master followed by an
Acknowledge bit (AK = 0 for reception of a valid chip address)
from the slave. The chip address must be transmitted MSB
(A6) first. The first five bits of the A8296 chip address (A6 to
A2) are fixed as 00010. The remaining two bits (A1 and A0)
are used to select one of four possible A8296 chip addresses.
The DC voltage on the ADD pin programs the chip address.
See the Electrical Characteristics table for the ADD pin volt-
ages and the corresponding chip addresses.
bits–eight bits of control register address (RC7 to RC0) from
the master followed by an Acknowledge bit from the slave. The
Control register address must be transmitted MSB (RC7) first.
The A8296 only has one Control register so the Control register
address is fixed as 00000000.
bits of control data (D7 to D0) from the master followed by
an Acknowledge bit from the slave. The control data must be
transmitted MSB first (D7). The Control register bits are identi-
fied in the Control Registers section of this datasheet.
Read Cycle Description.
Single LNB Supply and Control Voltage Regulator
Reading from the A8296 Status
Status register address, an I
condition, a “repeated” chip address with R/W=1, and finally the
status data from the A8296. Reading from the A8296 Status regis-
ter is shown in figure 6(b).
• This 9-bit Chip Address cycle is identical to the Chip Ad-
• The Status Register Address cycle consists of a total of nine
• The “Repeated” Chip Address cycle begins with an I
• The Status Data cycle consists of a total of nine bits–eight bits
dress cycle previously described for the Write Control regis-
ter sequence. It consists of A6 to A0, plus one read/write bit
(R/W = 0) from the master, followed by an Acknowledge bit
from the slave and finally an I
bits–eight bits of Status register address (RS7 to RS0) from the
master, followed by an Acknowledge bit from the slave. The
Status register address must be transmitted MSB (RS7) first.
The A8296 only has one Status register, so the Status register
address is fixed at 00000000.
Start condition followed by a 9-bit cycle identical to the Chip
Address cycle previously described for the Write Control
Register sequence. It consists of A6 to A0, plus one read/write
bit (R/W = 1) from the master, followed by an Acknowledge bit
from the slave.
of status data (RD7 to RD0) from the slave, followed by an
Acknowledge bit from the master. The status data is transmit-
ted MSB (RD7) first. The Status register bits are identified in
the Status Register section of this datasheet.
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2
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
C™ Stop condition, an I
2
C™ Stop condition.
2
C™ Start
2
C™
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