Figure 6-1 Hi08 Block Diagram; Hi08 Block Diagram - Motorola DSP56309 User Manual

6.4

HI08 BLOCK DIAGRAM

Figure 6-1 shows the HI08 registers. The top row of registers are for access by the DSP
core. The bottom row of registers are for access by the host processor.
HCR = Host Control Register
HSR = Host Status Register
HPCR = Host Port Control Register
HBAR = Host Base Address register
24 24
HCR HSR
ISR ICR
8 8
ICR = Interface Control Register
CVR = Command Vector Register
ISR = Interface Status Register
IVR = Interrupt Vector Register
RXH = Receive Register High
MOTOROLA
Core DMA Data Bus
DSP Peripheral Data Bus
24 24
HDDR HDR HBAR
Address
Comparator
3
CVR IVR Latch
8 8
HOST Bus

Figure 6-1 HI08 Block Diagram

DSP56309UM/D
HTX = Host Transmit register
HRX = Host Receive register
HDDR = Host Data Direction Register
HDR = Host Data Register
24 24 24
HPCR
8
5
RXH RXM RXL
8 3 8 8
RXM = Receive Register Middle
RXL = Receive Register Low
TXH = Transmit Register High
TXM = Transmit Register Middle
TXL = Transmit Register High
Host Interface (HI08)
HI08 Block Diagram
24 24 24
HTX HRX
24 24
TXH TXM TXL
8 8 8
AA0657
8
6-7