MAX7057ASE+ Maxim Integrated Products, MAX7057ASE+ Datasheet - Page 11

• Manufacturer Part Number: MAX7057ASE+
• Description: RF Transmitter IC TRANSMITTER ASK/FSK
• Manufacturer: Maxim Integrated Products

Specifications of MAX7057ASE+

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

Depending on the command, byte 1 through byte N
may assume different functions. They may either be a
direct command (write, read, read all, reset), or an
address or data contents. The commands available in
the MAX7057 SPI are described in detail below:
Write: The write command (0x01) is used to program
the MAX7057 registers (see Tables 2 and 3). The for-
mat shown in Figure 3 must be followed, allowing all the
registers to be programmed within one CS cycle.
Figure 2. SPI Format
Figure 3. SPI Write Command Format
SCLK
SDI
SCLK
CS
SDI
300MHz to 450MHz Frequency-Programmable
CS
______________________________________________________________________________________
D7
WRITE COMMAND (0x01)
D6
D5
D4
DATA 1
D3
A7 A6 A5 A4 A3 A2 A1 A0
D2
INITIAL ADDRESS (A[7:0])
D1
D0
Using a byte descriptive notation, the write command
can be viewed as the following sequence:
Data 0 is then written to the register addressed by
<Initial Address>, Data 1 is written to <Initial Address +
1>, and so on.
Read: To execute an SPI read operation, the general-
purpose output (GPO) pin must be configured to either
a CKOUT_SDO or SDO function (see Tables 15 and 16
for details).
D7
SDI: <0x01> <Initial Address> <Data 0> <Data 1> … <Data N>
ASK/FSK Transmitter
D6
D7
D6 D5 D4 D3 D2 D1 D0
D5
DATA N
D4
DATA 0
D3
D2
D1
D0
D7
DATA N
D0
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