Rainbow Electronics MAX2062 - Manual (Page 20)

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MAX2062
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
Table 3. SPI Data Format (continued)
Figure 1. SPI Timing Diagram
FUNCTION BIT DESCRIPTION
Digital Attenuator State 2
(Path 1)
D17 16dB step (MSB of the 5-bit word used to program the Path 1 digital attenuator state 2)
D16 8dB step
D15 4dB step
D14 2dB step
D13 1dB step
Digital Attenuator State 1
(Path 1)
D12 16dB step (MSB of the 5-bit word used to program the Path 1 digital attenuator state 1)
D11 8dB step
D10 4dB step
D9 2dB step
D8 1dB step
On-Chip DAC
(Path 1)
D7 Bit 7 (MSB) of on-chip DAC used to program the Path 1 analog attenuator
D6 Bit 6 of DAC
D5 Bit 5 of DAC
D4 Bit 4 of DAC
D3 Bit 3 of DAC
D2 Bit 2 of DAC
D1 Bit 1 of DAC
D0 (LSB) Bit 0 (LSB) of DAC
t CS
MSB LSB
DN D1 D0 D(N-1)
t CH
t
CW
t ES
t EW
t EWS
DATA
CLOCK
CS
DATA ENTERED ON CLOCK RISING EDGE.
ATTENUATOR REGISTER STATE CHANGE ON CS RISING EDGE.
N = NUMBER OF DATA BITS. NOTES: