Development Support
MPC561/MPC563 Reference Manual, Rev. 1.2
23-32
Freescale Semiconductor
Note:
DSCK and DSDI transitions are not required to be synchronous with CLKOUT.
Figure 23-9. Asynchronous Clock Serial Communications
Figure 23-10. Synchronous Self Clock Serial Communication
MODE
CNTRL
DI<0>
S<0>
S<1>
DO<0>
START
READY
Debug Port drives “ready” bit onto DSDO when ready for a new transmission.
Debug Port detects the “start” bit on DSDI and follows
the “ready” bit with two status bits and 7 or 32 output data bits.
Development Tool drives the “start” bit on DSDI (after detecting “ready” bit on
DSDO when in debug mode). The “start” bit is immediately followed by
a mode bit and a control bit and then 7 or 32 input data bits.
DI
DI
DI
<N>
<N-1>
<N-2>
DO
DO
DO
<N>
<N-1>
<N-2>
DSCK
DSDI
DSDO
Development Tool drives the “start” bit on DSDI (after detecting “ready” bit on
Debug Port drives “ready” bit onto DSDO when CPU starts a read of DPIR or DPDR.
Debug Port detects the “start” bit on DSDI and follows
the “ready” bit with two status bits and 7 or 32 output data bits.
MODECNTRLDI<0>
START
DI
DI
DI
DI<1>
DI
1
<N>
<N-1>
<N-2>
<N-3>
DI<
DSDO when in debug mode). The “start” bit is immediately followed by
a mode bit and a control bit and then 7 or 32 input data bits.
S<0> S<1>
DO
<0 >
READY
DO
DO
DO
DO
DO
<1 >
<N>
<N-1>
<N-2>
<N-3>
CLKOUT
DSDI
DSDO
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...