SNAS800 July 2021 LMX1204
The LOGISYS output operates in a somewhat similar way to the SYSOUT outputs with the exception that the LOGISYS is lower frequency and supports the three formats of LVDS, LVPECL, and CML. The LOGISYSOUT_EN enables the output buffer and LOGISYS_FMT sets the format. LVDS mode allows programmable common mode, LVPECL and CML require external components, and CML allows programmable output power (see Table 7-5).
|LOGISYSOUT_EN||LOGISYS_FMT||LOGISYS FORMAT||EXTERNAL TERMINIATION REQUIRED||OUTPUT POWER||OUTPUT COMMON MODE|
|1||0||LVDS||None||Fixed||Temperature compensated and controlled by LOGISYS_VCM|
|2||CML||Pull-Up resistors||Controlled by LOGISYS_PWR||Fixed|
|3||LVDS||None||Fixed||NOT temperature compensated, but controlled by LOGISYS_VCM|