SIGNALCORE SC5520A, Руководство по оборудованию

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©2020 Rev 1.1
15 Hardware Registers
4 Hardware Registers
Configuration Registers
These are write-only registers to configure the device. The registers vary in length to reduce redundant
data and improve the communication speed, especially for SPI and RS232 interfaces. Furthermore, it is
vitally important that the length of data written to a register is exact because failure to do so will cause
the interfaces to misinterpret the incoming data, leaving the device in a stalled state. The total number of
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 6 . The table provides a summary of the configuration registers, and each
register is explained in detail in the sections following.
Table 6. Configuration Registers
Register Name
Register
Address Serial
Range
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
INITIALIZE 0x01 [7:0] Open Open Open Open Open Open Open Mode
SYSTEM_ACTIVE 0x02 [7:0] Open Open Open Open Open Open Open
Enable
‘ active ’
LED
SYNTH_MODE 0x03 [7:0] Open Open Open Open Open
Disable
SS Loop
gain Lock
mode
RF_MODE 0x04 [7:0] Open Open Open Open Open Open Open Mode
LIST_MODE_CONFIG 0x05 [7:0]
Trig
out
mode Trig
out
enable
Return
to start
Step
on
trigger
Hw
trigger
Saw /
Tri
wave
Sweep
dir SSS-
mode
LIST_START_FREQ 0x06 [55:0] Frequency Word (mHz) [55:0]
LIST_STOP_FREQ 0x07 [55:0] Frequency Word (mHz) [55:0]
LIST_STEP_FREQ 0x08 [55:0] Frequency Word (mHz) [55:0]
LIST_DWELL_TIME 0x09
[31:0] Dwell Word[31:0]
[55:32] Set to Zeros
LIST_CYCLE_COUNT 0x0A
[31:0] Count Word[31:0]
[55:32] Set to Zeros
RESERVED 0x0B [7:0] Open Open Open Open Open Open Open Mode
LIST_BUFFER_POINTS 0x0C
[15:0] Points Word [15:0]
[23:16] Set to Zeros
LIST_BUFFER_WRITE 0x0D [55:0] Frequency (mHz) / Level Word (100 th of dB) [55:0] See 4.1.13
LIST_BUF_MEM_XFER 0x0E [7:0] Open Open Open Open Open Open Open Mode
LIST_SOFT_TRIGGER 0x0F [7:0] Open Open Open Open Open Open Open Open
RF_FREQUENCY 0x10 [55:0] Frequency Word (mHz) [55:0]
RF_LEVEL 0x11
[7:0] RF Power Word [7:0] in 100
th
of dB
[15:0] Sign Bit RF Power Word [14:8] in 100 th of dB
[23:16] Set to Zeros
RF_OUT_ENABLE 0x12 [7:0] Open Open Open Open Open Open Open Mode
RF_PHASE 0x13
[23:0] RF_PHASE Word [23:0] (in 10 th of deg)
[31:24] Sign RF_PHASE Word [30:24] (in 10 th of deg)