SPRS174S – APRIL 2001 – REVISED MARCH 2011
www.ti.com
2.4
Signal Descriptions
specifies the signals on the F281x and C281x devices. All digital inputs are TTL-compatible. All
outputs are 3.3 V with CMOS levels. Inputs are not 5-V tolerant. A 100-µA (or 20-µA) pullup/pulldown is
used.
Table 2-2. Signal Descriptions
(1)
PIN NO.
NAME
179-BALL
GHH/ZHH
D7
B7
A8
B9
A10
E10
C11
A14
C12
D14
E12
F12
G14
H13
J12
M11
N10
M2
G5
A9
B11
J10
L14
N9
L9
M8
P7
L5
L3
J5
K3
J3
H5
H3
G3
176-PIN
PGF
158
156
152
148
144
141
138
132
130
125
121
118
111
108
103
85
80
43
18
147
139
97
96
74
73
68
65
54
39
36
33
30
27
24
21
128-PIN
PBK
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
I/O/Z
(2)
PU/PD
(3)
DESCRIPTION
XINTF SIGNALS (2812 ONLY)
XA[18]
XA[17]
XA[16]
XA[15]
XA[14]
XA[13]
XA[12]
XA[11]
XA[10]
XA[9]
XA[8]
XA[7]
XA[6]
XA[5]
XA[4]
XA[3]
XA[2]
XA[1]
XA[0]
XD[15]
XD[14]
XD[13]
XD[12]
XD[11]
XD[10]
XD[9]
XD[8]
XD[7]
XD[6]
XD[5]
XD[4]
XD[3]
XD[2]
XD[1]
XD[0]
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
O/Z
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
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
16-bit XINTF Data Bus
19-bit XINTF Address Bus
(1)
(2)
(3)
18
Typical drive strength of the output buffer for all pins is 4 mA except for TDO, XCLKOUT, XF, XINTF, EMU0, and EMU1 pins, which are
8 mA.
I = Input, O = Output, Z = High impedance
PU = pin has internal pullup; PD = pin has internal pulldown. Pullup/pulldown strength is given in
Electrical Characteristics
Over Recommended Operating Conditions. The pullups/pulldowns are enabled in boundary scan mode.
Introduction
Copyright © 2001–2011, Texas Instruments Incorporated
Product Folder Link(s):
TI [ TEXAS INSTRUMENTS ]
