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14
14.2 Pin Function of the RTD
Pin functions of the RTD are shown below.
Table 14.2.1 Pin Function of the RTD
Pin Name
Type
RTDTXD
Output
RTDRXD
Input
RTDACK
Output
RTDCLK
Input
Function
RTD serial data output
RTD serial data input
Outputs a low-level pulse synchronously with the beginning clock edge of the
output data word. The width of the low-level pulse thus output indicates the
type of instruction/data that the RTD received.
1 clock period
1 clock period
2 clock periods
3 clock periods
4 clock periods or more : RCV (recover from runaway) command
RTD transfer clock input
14-3
REAL-TIME DEBUGGER (RTD)
14.2 Pin Function of the RTD
: VER (continuous monitor) command
: VEI (RTD interrupt request) command
: RDR (real-time RAM content output) command
: WRR (RAM content forcible rewrite) command or
the data to rewrite
Ver.0.10
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