Motorola DSP56000, 24-Bit Digital Signal Processor manual Displaying a Specified Register

USING THE OnCE

f.CLK

g.Send command READ FIFO REGISTER and increment counter (10010001)

h.ACK

i.CLK

j.Send command READ FIFO REGISTER and increment counter (10010001)

k.ACK

l.CLK

m.Send command READ FIFO REGISTER and increment counter (10010001)

n.ACK

o.CLK

p.Send command READ FIFO REGISTER and increment counter (10010001)

q.ACK

r.CLK

s.Send command READ FIFO REGISTER and increment counter (10010001)

t.ACK

u.CLK

10.11.2 Displaying A Specified Register

1.Send command WRITE PDB REGISTER, GO, no EX (01001001). The OnCE con- troller selects PDB as destination for serial data.

2.ACK

3.Send the 24-bit DSP56K opcode: “MOVE reg,x:OGDB”

After 24 bits have been received, the PDB register drives the PDB. The OnCE con- troller releases the chip from the debug mode, the chip executes the MOVE instruction, and the contents of the register specified in the instruction are loaded in the GDB REGISTER. The signal that marks the end of the instruction returns the chip to the debug mode.

4.ACK

5.Send command READ GDB REGISTER (10001000)

10- 22 ON-CHIP EMULATION (OnCE) MOTOROLA