Terminal Functions
60
April 2004
Revised May 2005
SPRS247E
Table 3
9. Terminal Functions (Continued)
NAME
DESCRIPTION
IPD/
IPU
TYPE
NO.
EMIFA (32-BIT)
DATA (CONTINUED)
AED13
AED12
AED11
AED10
AED9
AED8
AED7
AED6
AED5
AED4
AED3
AED2
AED1
AED0
B18
C18
A19
C19
B19
A21
D15
A15
B15
C15
A16
C16
B16
C17
I/O/Z
IPU
EMIFA external data
TIMER 2
No external pins. The timer 2 peripheral pins are
not
pinned out as external pins.
TIMER 1
TOUT1/LENDIAN
AA1
I/O/Z
IPU
Timer 1 output (
O/Z
) or device endian mode (
I
).
Also controls initialization of DSP modes at reset via pullup/pulldown resistors
Device Endian mode
0
–
Big Endian
1
Little Endian (default)
For more details on LENDIAN, see the Device Configurations section of this data sheet.
TINP1
AB1
I
IPD
Timer 1 or general-purpose input
TIMER 0
TOUT0/HPI_EN
AA2
I/O/Z
IPD
Timer 0 output pin and HPI enable HPI_EN pin function
The HPI_EN pin function selects whether the HPI peripheral or McASP1 peripheral,
and GP0[15:8] pins are functionally enabled
0
–
HPI is enabled and the McASP1 peripheral and GP0 [15:8] pins are disabled
(default mode); [HPI32, if HD5 = 1; HPI16 if HD5 = 0]
1
HPI I is disabled and the McASP1 peripheral and GP0 [15:8] pins are
enabled
For more details, see the Device Configurations section of this data sheet.
TINP0
AB2
I
IPD
Timer 0 or general-purpose input
INTER-INTEGRATED CIRCUIT 1 (I2C1)
SCL1
AA18
I/O/Z
—
I2C1 clock. When the I2C module is used, use an external pullup resistor on this pin.
SDA1
AA19
I/O/Z
—
I2C1 data. When I2C is used, ensure there is an external pullup resistors on this pin.
INTER-INTEGRATED CIRCUIT 0 (I2C0)
SCL0
AB18
I/O/Z
—
I2C0 clock. When I2C is used, ensure there is an external pullup resistors on this pin.
SDA0
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog Signal
IPD = Internal pulldown, IPU = Internal pullup. (These IPD/IPU signal pins feature a 30-k
IPD or IPU resistor. To pull up a signal to the opposite
supply rail, a 1-k
resistor should be used.)
§
These pins are multiplexed pins. For more details, see the Device Configurations section of this data sheet.
AB19
I/O/Z
—
I2C0 data. When I2C is used, ensure there is an external pullup resistors on this pin.