Datasheet

AM3517, AM3505
www.ti.com SPRS550E –OCTOBER 2009–REVISED MARCH 2013
2.2 Ball Characteristics
Table 2-1 and Table 2-2 describe the terminal characteristics and the signals multiplexed on each pin for
the ZCN/ZER packages. The following list describes the table column headers.
1. BALL LOCATION: Ball number(s) on the bottom side associated with each signal(s) on the bottom.
2. PIN NAME: Names of signals multiplexed on each ball (also notice that the name of the pin is the
signal name in mode 0).
Note: The Ball Characteristics table does not take into account subsystem pin multiplexing options.
Subsystem pin multiplexing options are described in Section 2.4, Signal Description.
3. MODE: Multiplexing mode number.
(a) Mode 0 is the primary mode; this means that when mode 0 is set, the function mapped on the pin
corresponds to the name of the pin. There is always a function mapped on the primary mode.
Notice that primary mode is not necessarily the default mode.
Note: The default mode is the mode which is automatically configured on release of the internal
GLOBAL_PWRON reset; also see the RESET REL. MODE column.
(b) Modes 1 to 7 are possible modes for alternate functions. On each pin, some modes are effectively
used for alternate functions, while some modes are not used and do not correspond to a functional
configuration.
4. TYPE: Signal direction
– I = Input
– O = Output
– I/O = Input/Output
– D = Open drain
– DS = Differential
– A = Analog
Note: In the safe_mode, the buffer is configured in high-impedance.
5. BALL RESET STATE: The state of the terminal at reset (power up).
– 0: The buffer drives V
OL
(pulldown/pullup resistor not activated)
0(PD): The buffer drives V
OL
with an active pulldown resistor.
– 1: The buffer drives V
OH
(pulldown/pullup resistor not activated)
1(PU): The buffer drives V
OH
with an active pullup resistor.
– Z: High-impedance
– L: High-impedance with an active pulldown resistor
– H: High-impedance with an active pullup resistor
6. BALL RESET REL. STATE: The state of the terminal at reset release.
– 0: The buffer drives V
OL
(pulldown/pullup resistor not activated)
0(PD): The buffer drives V
OL
with an active pulldown resistor.
– 1: The buffer drives V
OH
(pulldown/pullup resistor not activated)
1(PU): The buffer drives V
OH
with an active pullup resistor.
– Z: High-impedance
– L: High-impedance with an active pulldown resistor
– H : High-impedance with an active pullup resistor
7. RESET REL. MODE: This mode is automatically configured on release of the internal
GLOBAL_PWRON reset.
8. POWER: The voltage supply that powers the terminal’s I/O buffers.
9. VOLTAGE: Supply voltage for associated pin.
10. HYS: Indicates if the input buffer is with hysteresis.
11. LOAD: Load capacitance of the associated output buffer.
12. PULL U/D - TYPE: Denotes the presence of an internal pullup or pulldown resistor. Pullup and
pulldown resistors can be enabled or disabled via software.
Copyright © 2009–2013, Texas Instruments Incorporated Terminal Description 17
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