JAJSI09I September 2009 – October 2019 DS90UR905Q-Q1 , DS90UR906Q-Q1
PRODUCTION DATA.
The deserializer provides an internally generated spread spectrum clock (SSCG) to modulate its outputs. Both clock and data outputs are modulated. This will aid to lower system EMI. Output SSCG deviations to ±2.0% (4% total) at up to 35kHz modulations nominally are available (see Table 4). This feature may be controlled by external STRAP pins or by register.
SSC[3:0] INPUTS
LF_MODE = L (20 to 65 MHz) |
RESULT | ||||
---|---|---|---|---|---|
SSC3 | SSC2 | SSC1 | SSC0 | FDEV (%) | FMOD (kHz) |
L | L | L | L | Off | Off |
L | L | L | H | ±0.5 | PCLK/2168 |
L | L | H | L | ±1.0 | |
L | L | H | H | ±1.5 | |
L | H | L | L | ±2.0 | |
L | H | L | H | ±0.5 | PCLK/1300 |
L | H | H | L | ±1.0 | |
L | H | H | H | ±1.5 | |
H | L | L | L | ±2.0 | |
H | L | L | H | ±0.5 | PCLK/868 |
H | L | H | L | ±1.0 | |
H | L | H | H | ±1.5 | |
H | H | L | L | ±2.0 | |
H | H | L | H | ±0.5 | PCLK/650 |
H | H | H | L | ±1.0 | |
H | H | H | H | ±1.5 |
SSC[3:0] INPUTS
LH_MODE = H (5 to 20 MHz) |
RESULT | ||||
---|---|---|---|---|---|
SSC3 | SSC2 | SSC1 | SSC0 | FDEV (%) | FMOD (kHz) |
L | L | L | L | Off | Off |
L | L | L | H | ±0.5 | PCLK/620 |
L | L | H | L | ±1.0 | |
L | L | H | H | ±1.5 | |
L | H | L | L | ±2.0 | |
L | H | L | H | ±0.5 | PCLK/370 |
L | H | H | L | ±1.0 | |
L | H | H | H | ±1.5 | |
H | L | L | L | ±2.0 | |
H | L | L | H | ±0.5 | PCLK/258 |
H | L | H | L | ±1.0 | |
H | L | H | H | ±1.5 | |
H | H | L | L | ±2.0 | |
H | H | L | H | ±0.5 | PCLK/192 |
H | H | H | L | ±1.0 | |
H | H | H | H | ±1.5 |