MAX1385EVC16 Maxim Integrated Products, MAX1385EVC16 Datasheet - Page 40

• Manufacturer Part Number: MAX1385EVC16
• Description: Power Management Modules & Development Tools EVALUATION KIT FOR T FOR THE MAX1385BETM+
• Manufacturer: Maxim Integrated Products

Specifications of MAX1385EVC16

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

Dual RF LDMOS Bias Controllers
with I
2) The MAX1385/MAX1386 then transmit the contents
3) The MAX1385/MAX1386 transmit the least signifi-
4) The master issues a NACK bit and then generates a
Poll the current register by omitting step 4 and continu-
ing to issue ACK bits after each data byte.
The MAX1385/MAX1386 allow commands to be strung
together to minimize configuration time, which is espe-
cially useful in HS mode. Figure 12 shows an example
of stringing a write and read command together to form
a write/readback command.
Figure 11. Read/Write Formats
40
of the last register accessed starting with the most
significant 8-bit byte of the 16-bit word. MSBs are
sent first. Afterwards, the master needs to send an
ACK bit.
cant 8-bit byte of the 16-bit word. MSBs are sent
first.
repeated START or STOP condition (Sr or P).
______________________________________________________________________________________
WRITE WORD FORMAT
5-BYTE READ
3-BYTE READ
WRITE BLOCK FORMAT
S OR Sr
S OR Sr
S OR Sr
S OR Sr
2
ADDRESS
7 BITS
ADDRESS
ADDRESS
C/SPI Interface
ADDRESS
7 BITS
7 BITS
7 BITS
R/W
0
R/W
R/W
R/W
ACK
0
1
0
Stringing Commands
COMMAND
ACK
ACK
ACK
8 BITS
READ
8 BITS (MSB)
COMMAND
COMMAND
WRITE
8 BITS
WRITE
8 BITS
DATA
ACK
Sr
N 3-BYTE SEQUENCES (S, Sr, AND P NOT NEEDED)
ACK
ACK
ACK
ADDRESS
7 BITS
8 BITS (MSB)
8 BITS (LSB)
8 BITS (MSB)
Figure 13 shows another useful sequence for a read-
modify-write application.
The MAX1385/MAX1386 include a 7-bit-long slave
address. The first 4 bits (MSBs) of the slave address
are factory programmed and always 0x4h. The logic
state of the address inputs (A2, A1, and A0) determine
the 3 LSBs of the device address (see Figure 14).
Connect A2, A1, and A0 to DV
mum of eight MAX1385/MAX1386 devices can be con-
nected on the same bus at one time using these
address inputs.
The 8th bit of the address byte is a R/W bit. The
address byte R/W bit is set to 0 to notify the device that
a command byte will be written to the device next. The
address byte R/W bit is set to 1 to notify the device that
a control byte will not be sent and to immediately send
data from the last accessed register.
DATA
DATA
DATA
R/W
1
ACK
NACK
ACK
ACK
8 BITS (MSB)
DATA
Sr OR P
8 BITS (LSB)
8 BITS (LSB)
DATA
DATA
ACK
8 BITS (LSB)
ACK
ACK
DATA
DD
Slave Address Byte
Sr OR P
Sr OR P
or DGND. A maxi-
NACK Sr OR P