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13-24 March, 2003 Developer’s Manual
Intel
®
80200 Processor based on Intel
®
XScale
™
Microarchitecture
Software Debug
13.11.6.2 DBGRX Data Register
The bits in the DBGRX data register (Figure 13-6) are used by the debugger to send data to the
processor. The data register also contains a bit to flush previously written data and a high-speed
download flag.
13.11.6.3 DBG.RR
The debugger uses DBG.RR as part of the synchronization that occurs between the debugger and
debug handler for accessing RX. This bit contains the value of TXRXCTRL[31] after a
Capture_DR. The debug handler automatically sets TXRXCTRL[31] by doing a write to RX.
The debugger polls DBG.RR to determine when the handler has read the previous data from RX.
The debugger sets TXRXCTRL[31] by setting the DBG.V bit.
Figure 13-6. DBGRX Data Register
12
3334
TDO
TDI
DBG_SR
Capture_DR
Update_DR
DBG_REG
1233435
TCK
0
0
RX TXRXCTRL[31]
DBG.RR
DBG.FLUSH
DBG.RX
DBG.V
0
0
1
DBG.D
cleared by
RX Write Logic