Table 10-1 Ex Bit Definition; Table 10-2 Go Bit Definition; Table 10-3 R/W Bit Definition; Table 10-4 Once Register Select Encoding - Motorola DSP56309 User Manual

On-Chip Emulation Module
OnCE Controller
read/write to ÒNo Register SelectedÓ. Otherwise the EX bit is ignored. Table 10-1 shows
the definition of the EX bit.
10.4.1.3 GO Command (GO) Bit 6
If the GO bit is set, execute the instruction that resides in the PIL register. To execute the
instruction, the core leaves debug mode. The core returns to debug mode immediately
after executing the instruction if the EX bit is cleared. The core goes on to normal
operation if the EX bit is set. The GO command is executed only if the operation is write
to OPDBR or read/write to ÒNo Register SelectedÓ. Otherwise the GO bit is ignored.
Table 10-2 shows the definition of the GO bit.
10.4.1.4 Read/Write Command (R/W) Bit 7
The R/W bit, as shown in Table 10-3, specifies the direction of data transfer. Table 10-4
shows how to encode OnCE register selections.
R/W
0 Write the data associated with the command into the register specified by
RS4ÐRS0.
1 Read the data contained in the register specified by RS4ÐRS0.
RS[4:0]
00000
10-6

Table 10-1 EX Bit Definition

EX
0 Remain in Debug mode
1

Table 10-2 GO Bit Definition

GO
0 InactiveÑno action taken
1 Execute instruction in PIL

Table 10-3 R/W Bit Definition

Table 10-4 OnCE Register Select Encoding

OnCE Status and Control Register (OSCR)
DSP56309UM/D
Action
Leave Debug mode
Action
Action
Register Selected
MOTOROLA