Rainbow Electronics MAX2063 - Manual (Page 17)

MAX2063
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Digital VGA
17
Table 3. SPI Data Format
FUNCTION BIT DESCRIPTION
2nd Digital Attenuator
State 4
D55 (MSB) 16dB step (MSB of the 5-bit word used to program the digital attenuator state 4)
D54 8dB step
D53 4dB step
D52 2dB step
D51 1dB step
2nd Digital Attenuator
State 3
D50 16dB step (MSB of the 5-bit word used to program the digital attenuator state 3)
D49 8dB step
D48 4dB step
D47 2dB step
D46 1dB step
2nd Digital Attenuator
State 2
D45 16dB step (MSB of the 5-bit word used to program the digital attenuator state 2)
D44 8dB step
D43 4dB step
D42 2dB step
D41 1dB step
2nd Digital Attenuator
State 1
D40 16dB step (MSB of the 5-bit word used to program the digital attenuator state 1)
D39 8dB step
D38 4dB step
D37 2dB step
D36 1dB step
Reserved
D35
Bits D[35:28] are reserved. Set to logic 0.
D34
D33
D32
D31
D30
D29
D28
1st Digital Attenuator
State 4
D27 16dB step (MSB of the 5-bit word used to program the digital attenuator state 4)
D26 8dB step
D25 4dB step
D24 2dB step
D23 1dB step
1st Digital Attenuator
State 3
D22 16dB step (MSB of the 5-bit word used to program the digital attenuator state 3)
D21 8dB step
D20 4dB step
D19 2dB step
D18 1dB step
1st Digital Attenuator
State 2
D17 16dB step (MSB of the 5-bit word used to program the digital attenuator state 2)
D16 8dB step
D15 4dB step
D14 2dB step
D13 1dB step