Rev 1.1 | SC5317A & SC5318A
Hardware Manual
SignalCore, Inc.
26
SC5317A & SC5318A Hardware Manual
Table 6. Device parameter data
Device
Parameter Name
Param
num
Data
type
Byte 7
Byte 6
Byte 5
Byte 4
Byte 3
Byte 2
Byte 1
Byte 0
RF FREQ
0
U64
zeros
Data
IF1 FREQ
1
U64
zeros
Data
LO FREQ
2
U64
zeros
Data
OTHER
3
Mixed
zeros
zeros
zeros
zeros
zeros
Sig
Path
RF
Atten
IF
Atten
Frequency parameter values
Frequency parameter values are returned in the first 7 bytes with the last byte padded with zeros. The
least significant bit (lsb) is 1/1000 Hertz (the data is returned in 1 one thousandth of a Hertz). Divide the
data by 1000 to obtain the result in Hertz.
Attenuator values
Each attenuator value is returned as one byte, and the lsb is in 0.25 dB. Divide each byte by 4 to obtain
the result in dB.
Signal Chain Configuration
The signal chain configuration data is in the first 2 bytes, and their data is represented in the following
table.
Table 7. Signal chain configuration data representation
Bit Description
[0] Bypass Conversion
[1] RF Amp Enable
[2] IF Out Enable
[4:3] Inverted Spectrum
Device Information Parameters and Format
Not all the 8 bytes read back contain valid data. The following table shows the valid bytes of data for each
of the parameters.
Device
Parameter Name
Param
num
Data
type
Byte 7
Byte 6
Byte 5
Byte 4
Byte 3
Byte 2
Byte 1
Byte 0
INTERFACE/SN
0
U32
Intrfce
Serial Number
REVISIONS
1
F32
hardware revision
Firmware revision
DATES
2
U32
Mfg year
Month
Day
Cal year
Month
day