Freescale Semiconductor DSP56366 - Manual (Page 98)

HDI08 Block Diagram
DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
6-4 Freescale Semiconductor
6.4 HDI08 Block Diagram
Figure 6-1 shows the HDI08 registers. The top row of registers (HCR, HSR, HDDR, HDR, HBAR, HPCR,
HOTX, HORX) can be accessed the DSP core. The bottom row of registers (ISR, ICR, CVR, IVR,
RXH:RXM:RXL and TXH:TXM:TXL) can be accessed by the host processor.
Table 6-2 Strobe Signals Support signals
HDI08 Port Pin Single strobe bus Dual strobe bus GPIO Mode
HRW/HRD HRW HRD/HRD PB11
HDS/HWR HDS/HDS HWR/HWR PB12
Table 6-3 Host request support signals
HDI08 Port Pin Vector required No vector required GPIO Mode
HOREQ/HTRQ HOREQ/HOREQ HTRQ/HTRQ PB14
HACK/HRRQ HACK/HACK HRRQ/HRRQ PB15