SIGNALCORE SC5317A, Hardware Manual, Page: 16 / 39

©2018 Rev 1.1
15 Hardware Registers
bytes is the sum of the register address (1 Byte) and its corresponding data bytes. For example, to set the
RF frequency value, eight bytes must be written; the sum of the 1 register byte and 7 data bytes. See the
RF_FREQUENCY register of Table 5. The table provides a summary of the configuration registers, and each
register is explained in detail.
Table 4. Configuration Registers
Register Name Reg Add
Serial
Range
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
INITIALIZE 0x01 [7:0] Set to zeros [7:1] Mode
SYSTEM_ACTIVE 0x02 [7:0] Set to zeros [7:1] Enable “active” LED
SYNTH_MODE 0x03 [7:0] Set to zeros [7:2] Fast-tune Loop Gain
RF_FREQUENCY 0x10
[7:0] Frequency Word (Hz) [7:0]
[15:8] Frequency Word (Hz) [15:8]
[23:16] Frequency Word (Hz) [23:16]
[31:24] Frequency Word (Hz) [31:24]
[39:32] Frequency Word (Hz) [39:32]
[47:40] Frequency Word (Hz) [47:40]
[55:48] Frequency Word (Hz) [55:48]
IF_FREQUENCY 0x11
[7:0] Frequency Word (Hz) [7:0]
[15:8] Frequency Word (Hz) [15:8]
[23:16] Frequency Word (Hz) [23:16]
[31:24] Frequency Word (Hz) [31:24]
[39:32] Frequency Word (Hz) [39:32]
[47:40] Frequency Word (Hz) [47:40]
[55:48] Frequency Word (Hz) [55:48]
LO_FREQUENCY 0x12
[7:0] Frequency Word (Hz) [7:0]
[15:8] Frequency Word (Hz) [15:8]
[23:16] Frequency Word (Hz) [23:16]
[31:24] Frequency Word (Hz) [31:24]
[39:32] Frequency Word (Hz) [39:32]
[47:40] Frequency Word (Hz) [47:40]
[55:48] Frequency Word (Hz) [55:48]
RF_AMP 0x13 [7:0]
RF_AMP 0x14 [7:0] Set to zeros [7:1] Enable
ATTENUATOR 0x15
[7:0] Attenuator Value
[15:8] Set to zeros [15:11] Attenuator Number
[23:16] Set to zeros [23:16]
SIGNAL_PATH 0x16 [7:0] Set to zeros [7:4]
Invert
Spectrm IF Out
Enable Amp
Enable Bypass
convert
STORE_DEFAULT_ STATE 0x18 [7:0] Set all to zeros
DEVICE_STANDY 0x19 [7:0] Set to zeros [7:1] Enable
REFERENCE_CLOCK 0x1A [7:0] [7:2] set to zeros
PXI 10
enable
Lock ext
REFERENCE_DAC 0x1B
[7:0] DAC WORD [7:0]
[15:8] zeros [15:14] DAC WORD [13:8]
[23:16] Set to zeros
USER_EEPROM_ WRITE 0x1D
[7:0] BYTE DATA [7:0]
[15:8] ADDRESS [7:0]
[23:16] ADDRESS [15:8]
SYNTH_SELF_CAL 0x1F [7:0] Set all to zeros
Register 0x02 SET_SYS_ACTIVE
This register turns on or off the active LED indicator on the front connector interface of the device. This
register should be called when the device is opened or closed in software.