Freescale Semiconductor MPC5553 - Page 268

System Interface Unit (SIU)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor 6-89
6.3.1.12.108 Pad Configuration Register 218 (SIU_PCR218)
The SIU_PCR218 register controls the pin function, direction, and static electrical attributes of the
AN[15]_FCK pin.
Figure 6-120. AN[15]_FCK Pad Configuration Register (SIU_PCR218)
Refer to Table 6-16 for bit field definitions. The PA field for PCR218 is given in Table 6-44.
6.3.1.12.109 Pad Configuration Register 219 (SIU_PCR219)
The SIU_PCR219 register controls the drive strength of the MCKO pin.
Figure 6-121. MCKO Pad Configuration Register (SIU_PCR219)
Refer to Table 6-16 for bit field definitions.
Table 6-43. PCR217 PA Field Definition
PA Field Pin Function
0b00 SDI
0b01 Reserved
0b10 MA[2]
0b11 AN[14]
Address: Base + 0x01F4 Access: Read / write[5, 10, 12:13]
0123456789101112131415
R 00000
PA
1
1
Input and output buffers are enabled/disabled based on PA selection. The input and output buffer is disabled for the AN[15]
function. Only the output buffer is enabled for the FCK function.
0000
ODE
0
SRC
00
W
RESET: 0000010000000000
Table 6-44. PCR218 PA Field Definition
PA Field Pin Function
0b0 FCK
0b1 AN[15]
Address: Base + 0x01F6 Access: Read / write[8:9]
0123456789101112131415
R 00000000
DSC
000000
W
RESET: 0000000011000000