READI Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
24-77
RCPU development access can be achieved either via the READI signals or the BDM signals on the MCU.
The access method is determined during READI module configuration.
shows how READI
and BDM signals are multiplexed for RCPU development access.
When the READI module is configured for RCPU development access, IEEE-ISTO 5001 compliant
vendor-defined messages are used for transmission of data in and out of the MCU.
NOTE
On the MPC561/MPC563 the BDM signals are shared with the READI
signals. Therefore BDM access is limited to access via the Nexus
vendor-defined development support messages.
Figure 24-78. RCPU Development Access Multiplexing between READI and BDM Signals
24.14.1 RCPU Development Access Messaging
The following RCPU development access messages are used for handshaking between the device and the
tool — DSDI data message, DSDO data message, and BDM status message.
24.14.1.1 DSDI Message
The DSDI message is used by the tool to download information to the RCPU.
READI
USIU
JTAG
RCPU
TCK / DSCK / MCKI
TDO / DSDO / MDO0
TDI / DSDI / MDI0
Multiplexer
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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...