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TMS320C6421
Fixed-Point Digital Signal Processor
SPRS346B–JANUARY 2007–REVISED APRIL 2007
Table 2-26. Reserved Terminal Functions
SIGNAL
TYPE
(1)
OTHER
(2)(3)
DESCRIPTION
ZWT
NO.
ZDU
NO.
NAME
RESERVED
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. This pin
must
be tied directly to V
SS
for normal device
operation.
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. This pin
must
be tied directly to V
SS
for normal device
operation.
Reserved. This pin
must
be tied directly to V
SS
for normal device
operation.
Reserved. This pin
must
be tied directly to V
SS
for normal device
operation.
Reserved. This pin
must
be tied directly to V
SS
for normal device
operation.
Reserved. This pin
must
be tied directly to V
SS
for normal device
operation.
Reserved. For proper C6421 device operation, this pin
must
be pulled
down via an external resistor and tied to V
SS
.
RSV1
RSV2
RSV3
RSV4
RSV5
E5
K5
L5
L15
R13
D4
L4
M4
P19
W16
A O
A O
RSV6
N19
V22
A I
RSV7
RSV8
RSV9
RSV10
P19
P18
N18
N17
V21
U22
T21
T22
A O
A O
A O
A O
RSV11
P16
U20
RSV12
P17
V20
RSV13
N15
T20
RSV14
P15
T19
RSV15
N16
U21
IPD
DV
DD33
IPD
DV
DD33
IPD
DV
DD33
IPD
DV
DD33
RSV16
T3
W3
I
RSV17
E10
D12
I/O/Z
Reserved. (Leave unconnected, do not connect to power or ground)
RSV18
E11
D13
I/O/Z
Reserved. (Leave unconnected, do not connect to power or ground)
RSV19
E12
D14
I/O/Z
Reserved. (Leave unconnected, do not connect to power or ground)
RSV20
RSV21
T14
T16
Y15
Y18
I/O/Z
I/O/Z
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. For proper C6421 device operation, this pin
must
be pulled
down via an external 1-k
resistor.
Reserved. For proper C6421 device operation, this pin
must
be pulled
down via an external 1-k
resistor.
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
Reserved. (Leave unconnected, do not connect to power or ground)
RSV22
U14
AA15
I/O/Z
RSV23
U16
AA18
I/O/Z
RSV24
RSV25
RSV26
RSV27
RSV28
RSV29
RSV30
RSV31
RSV32
RSV33
W14
V14
W15
V15
U15
W16
V16
T17
V17
U17
AA16
Y16
AB16
AA17
Y17
AB17
AB18
AA19
Y19
AB19
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
(1)
(2)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal
IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see
Section 3.9.1
,
Pullup/Pulldown Resistors
.
Specifies the operating I/O supply voltage for each signal
(3)
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