Signal Descriptions
MPC561/MPC563 Reference Manual, Rev. 1.2
2-20
Freescale Semiconductor
2.2.1
MPC561/MPC563 Signal Multiplexing
describes the signal multiplexing that occurs between different modules of the
MPC561/MPC563. Most of the signal functions are controlled by the PDMCR2 register.
VSS
1
I
VSS
VSS. Zero supply/ground level for internal logic/external
bus.
IRAMSTBY
1
I
IRAMSTBY
SRAM Keep-Alive Power. This is an input current source for
an internal regulator that supplies voltage to all SRAM
modules in standby mode. This pad connects through a
voltage regulator and a voltage switch to the following
modules: CALRAM (32-Kbyte SRAM), DPTRAM (8-Kbyte
SRAM), BBC DECRAM (2-Kbyte vocabulary SRAM).
1
This is the function after PORESET/TRST and HRESET.
2
This signal also included the MDO5 function on the K27S mask set of the MPC561.
3
This signal was ECK on K27S mask set of MPC561.
4
Only the MCP563/MPC564 have Flash memory.
5
The input only applies in legacy mode.
6
C_CNTX0 and C_CNRX0 can be shared either with the MIOS14 GPIO pins (MPIO32B12, MPIO32B11) or with the QSMCM
SC12 pins (TXD2 / QGPO2, RXD2 / QGPI2). The selection is made by the TCNC bits in the PDMCR2 register. Refer to
Section 2.4, “Pad Module Configuration Register (PDMCR2)
.”
Table 2-2. MPC561/MPC563 Signal Sharing
Signal Name
Module Sharing
C_CNTX0/MPIO32B12,
C_CNRX0/MPIO32B11
TouCAN shared with MIOS14 GPIO
TXD2/QGPO2/C_CNTX0
RXD2/QGPI2/C_CNRX0
TouCAN shared with QSMCM SCI2
MPIO32B5/MDO5
READI submodule shared with MIOS14 GPIO
MPIO32B6/MPWM4,
MPIO32B7/MPWM5,
MPIO32B8/MPWM20,
MPIO32B9/MPWM21
MIOS14 PWM submodule shared with MIOS14 GPIO
VF0/MPIO32B0/MDO1,
VF1/MPIO32B1/MCKO,
VF2/MPIO32B2/MSEI,
VFLS0/MPIO32B3/MSEO
Debug pins shared with MIOS14 GPIO and READI
MPIO32B13/PPM_TCLK
MPIO32B14/PPM_RX0
MPIO32B15/PPM_TX0
PPM submodule shared with MIOS14 GPIO
MPWM2/PPM_TX1
MPWM3/PPM_RX1
PPM submodule shared with MIOS14 PWM submodule
Table 2-1. MPC561/MPC563 Signal Descriptions (continued)
Signal Name
No. of
Signals
Type
Function after
Reset
1
Description
Summary of Contents for MPC561
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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...
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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...