dsp56800eerm Freescale Semiconductor, Inc, dsp56800eerm Datasheet - Page 22

• Manufacturer Part Number: dsp56800eerm
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

22
(GPIOE2)
(GPIOE3)
(GPIOA0)
(GPIOA1)
(GPIOA2)
(GPIOA3)
(GPIOA4)
(GPIOA5)
(GPIOA6)
(GPIOA7)
Signal
Name
A10
A11
A12
A13
A14
A15
A6
A7
A8
A9
Table 2-2 Signal and Package Information for the 160-Pin LQFP and MBGA
Pin
No.
17
18
19
20
21
22
23
24
25
26
Ball No.
G1
G3
G2
H1
H2
H4
H3
J1
J2
J3
Schmitt
Schmitt
Output
Output
Output
Output
Input/
Input/
Type
56F8357 Technical Data, Rev. 15
disabled,
pull-up is
disabled,
pull-up is
output is
output is
In reset,
enabled
In reset,
enabled
During
Reset
State
Address Bus — A6 - A7 specify two of the address lines for
external program or data memory accesses.
Depending upon the state of the DRV bit in the EMI bus control
register (BCR), A6–A7 and EMI control signals are tri-stated
when the external bus is inactive.
Most designs will want to change the DRV state to DRV = 1
instead of using the default setting.
Port E GPIO — These two GPIO pins can be individually
programmed as input or output pins.
After reset, the default state is Address Bus.
To deactivate the internal pull-up resistor, clear the appropriate
GPIO bit in the GPIOE_PUR register.
Example: GPIOE2, clear bit 2 in the GPIOE_PUR register.
Address Bus— A8 - A15 specify eight of the address lines for
external program or data memory accesses.
Depending upon the state of the DRV bit in the EMI bus control
register (BCR), A8–A15 and EMI control signals are tri-stated
when the external bus is inactive.
Most designs will want to change the DRV state to DRV = 1
instead of using the default setting.
Port A GPIO — These eight GPIO pins can be individually
programmed as input or output pins.
After reset, the default state is Address Bus.
To deactivate the internal pull-up resistor, clear the appropriate
GPIO bit in the GPIOA_PUR register.
Example: GPIOA0, clear bit 0 in the GPIOA_PUR register.
Signal Description
Freescale Semiconductor
Preliminary