SIGNALCORE SC5305A, Руководство по эксплуатации и программированию, Страница: 19 / 67

SC5305A Operating & Programming Manual Rev 2.1.0 16
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Configuration Registers
The users may write the configuration registers (write only) directly by calling the sc5305a_RegWrite
function directly. Table 2 lists the register address (command) and the effective bytes of command data.
Data must be formatted into an unsigned integer of 32 bits prior to passing it to the function. As an
example to write the byte 0xEE into address 0xA8BB of the user EEPROM, the user would call the
sc5305a_RegWrite as follows:
sc5305a_RegWrite(deviceHandle, 0x23, 0x00A8BBEE)
Table 2: Configuration registers.
Register (Address)
Data
Bytes Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Default
INITIALIZE (0x01) [7:0] Open Open Open Open Open Open Open Mode 0x00
SET_SYSTEM_ACTIVE (0x02) [7:0] Open Open Open Open Open Open Open
Enable
SYS LED
0x00
POWER_SHUT_DOWN (0x05) [7:0] Open Open Open Open Open Open Open Enable 0x00
[7:0] 0x00
[15:8] 0x00
[23:16] 0x00
[31:24] 0x00
[7:0] 0x00
[15:8] 0x00
RF_PREAMPLIFIER_SETTING (0x12) [7:0] Open Open Open Open Open Open Open Enable 0x00
RF_MODE_SETTING (0x13) [7:0] Open Open Open Open Open
Fast
Tune
Enable
0x00
IF_BAND_SELECT (0x15) [7:0] Open Open Open Open Open Open Open Band 0x00
REFERENCE_SETTING (0x16) [7:0] Open Open Open Open Reserv
100 MHz
Out Sel
Ref Out
Enable
Lock
Enable
0x00
[7:0] 0x00
[15:8] 0x00
IF_INVERT_SETTING (0x1D) [7:0] Open Open Open Open Open Open Open Enable
[7:0]
[15:8]
[23:16]
[7:0] 0x00
[15:8] Open Open 0x00 Units Value [13:8]
PHASE_SETTING (0x32)
EEPROM DATA [7:0]
WRITE_USER_EEPROM (0x23)
EEPROM Address [7:0]
EEPROM Address [15:8]
Tenths Value Units Value[7:4]
Attenuator Value
Attenuator
ATTENUATOR_SETTING (0x11)
Fine Tune
REFERENCE_DAC (0x17)
DAC word [7:0]
DAC word [15:8]
Frequency Word [23:16]
Frequency Word [7:0]
Frequency Word [15:8]
Frequency Word [31:24]
RF_FREQUENCY (0x10)
Tuning the RF Frequency
The frequency of the first local oscillator (LO1) is set by writing the RF_FREQUENCY register (0x10). This
register requires four data bytes, these data bytes being the bytes comprising an unsigned 32-bit
integer. The data bytes contain the frequency tuning word in Hertz. For example, to tune to a frequency
of 2.4 GHz, the data word would be d2400000000 in decimal or 0x8F0D1800 in hexadecimal.