dsp56858 Freescale Semiconductor, Inc, dsp56858 Datasheet - Page 12

• Manufacturer Part Number: dsp56858
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

12
GPIOA0
GPIOA1
GPIOA2
GPIOA3
Signal
Table 3-1 56858 Signal and Package Information for the 144-pin LQFP and MAPBGA
Name
D10
D11
D12
D13
D14
D15
CS0
CS1
CS2
CS3
WR
RD
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
Pin No.
BGA
E10
H11
H10
F10
F11
H7
G7
D7
D5
C4
D3
D4
H8
H9
F9
B7
E7
F8
F7
B4
F6
B3
Pin No.
LQFP
120
121
122
123
124
137
138
142
143
144
81
94
95
96
97
98
83
84
85
86
8
9
Input/Output
Input/Output
Input/Output
Input/Output
Output(Z)
Output
Output
Output
Output
Output
Output
Input/
Type
56858 Technical Data, Rev. 6
Data Bus (D0-D15)—These pins provide the bidirectional data for
external program or data memory accesses.
Read Enable (RD) — is asserted during external memory read cycles.
This signal is pulled high during reset.
Write Enable (WR) —is asserted during external memory write cycles.
This signal is pulled high during reset.
External Chip Select (CS0)—This pin is used as a dedicated GPIO.
Port A GPIO (0) —This pin is a General Purpose I/O (GPIO) pin when
not configured for host port usage.
External Chip Select (CS1)—This pin is used as a dedicated GPIO.
Port A GPIO (1) —This pin is a General Purpose I/O (GPIO) pin when
not configured for host port usage.
External Chip Select (CS2)—This pin is used as a dedicated GPIO.
Port A GPIO (2) —This pin is a General Purpose I/O (GPIO) pin when
not configured for host port usage.
External Chip Select (CS3)—This pin is used as a dedicated GPIO.
Port A GPIO (3)—This pin is a General Purpose I/O (GPIO) pin when
not configured for host port usage.
Description
Freescale Semiconductor