2 cvr reserved—bit 6, 3 cvr host command (hc)—bit 7, 6 interrupt status register (isr) – Motorola DSP56012 User Manual
Page 110: 1 isr receive data register full (rxdf)—bit 0, Cvr reserved—bit 6 -30, Cvr host command (hc)—bit 7 -30, Interrupt status register (isr) -30, Isr receive data register full (rxdf)—bit 0 -30
