56F8367_07 Datasheet, PDF (38/184 Pages) Freescale Semiconductor, Inc – 16-bit Digital Signal Controllers

Table 2-2 Signal and Package Information for the 160-Pin LQFP and MBGA (Continued)
Signal
Name
Pin
No.
Ball No.
Type
State
During
Reset
Signal Description
EXTBOOT 124
B11
Schmitt
Input, External Boot — This input is tied to V_DD to force the device to
Input
pull-up _{boot from off-chip memory (assuming that the on-chip Flash}
enabled _{memory is not in a secure state). Otherwise, it is tied to ground.}
For details, see Table 4-4.
Note: When this pin is tied low, the customer boot software
should disable the internal pull-up resistor by setting the XBOOT
bit of the SIM_PUDR; see Part 6.5.6.
EMI_MODE 159
B2
Schmitt
Input, External Memory Mode — This input is tied to V_DD in order to
Input
pull-up _{enable an extra four address lines, for a total of 20 address lines}
enabled _{out of reset. This function is also affected by EXTBOOT and the}
Flash security mode. For details, see Table 4-4.
If a 20-bit address bus is not desired, then this pin is tied to
ground.
Note: When this pin is tied low, the customer boot software
should disable the internal pull-up resistor by setting the
EMI_MODE bit of the SIM_PUDR; see Part 6.5.6.
56F8367 Technical Data, Rev. 8
38
Freescale Semiconductor
Preliminary