TMS320F28P650DH: TMS320F28P65X internal VREG capability

Part Number: TMS320F28P650DH


Does the internal VREG for 3.3 to 1.2 work for all variants of the TMS320F28P65X ?   I recall reading somewhere that some of the higher pin count variants needed an external 1.2V supply but cant seem to find this information. I am particularly interested in the TMS320F28P659DH or DK in the 176pin package