SNOSDC1A June 2024 – October 2024 LMH1229 , LMH1239
PRODUCTION DATA
The LMH12x9 output function control for data routed to outputs SDI_OUT, OUT0, and OUT1 is configured by the OUT_CTRL pin. The OUT_CTRL pin determines whether to bypass the input cable equalizer, reclocker, or both. In normal operation (OUT_CTRL = F), both input equalizer and reclocker are enabled.
Table 6-6 lists the OUT_CTRL pin logic settings. These settings can be overridden through register control by applying the appropriate override bit values. For more information, refer to the LMH12x9 Programming Guide.
OUT_CTRL(1) | SDI INPUT CABLE EQUALIZER | RECLOCKER | DEFINITION |
---|---|---|---|
H, F | Enable | Enable | Normal operation OUT0, SDI_OUT, and OUT1: Recovered Data, Cable EQ (CTLE, DFE) and reclocker enabled |
R | Enable | Enable | OUT0 and SDI_OUT: Recovered Data, Cable EQ (CTLE,
DFE) and reclocker enabled OUT1: Full-Rate Recovered Clock if Data Rate ≤ 2.97Gbps. 297MHz Recovered Clock if Data Rate > 2.97Gbps |
L | Enable | Bypass | Debug Only OUT0, SDI_OUT, and OUT1: Equalized Data, Cable EQ (CTLE, DFE) enabled and reclocker bypassed(2) |