Datasheet
1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
Document Number:
RevSheetDate:
of
3/4/2008 3 4
Drawing Title:
Page Title:
Size
Stellaris LM3S1968 Evaluation Board
USB and Debugger Interfaces
B
B
EK-LM3S1968
FB1
60ohm @ 100 MHz
GND
18
GND
25
GND
34
ADBUS0
24
ADBUS1
23
ADBUS2
22
ADBUS3
21
ADBUS4
20
ADBUS5
19
ADBUS6
17
ADBUS7
16
ACBUS0
15
ACBUS1
13
ACBUS2
12
ACBUS3
11
BDBUS0
40
BDBUS1
39
BDBUS2
38
BDBUS3
37
BDBUS4
36
BDBUS5
35
BDBUS6
33
BDBUS7
32
BCBUS0
30
BCBUS1
29
BCBUS2
28
BCBUS3
27
SI/WUA
10
SI/WUB
26
GND
9
AGND
45
VCC
3
VCC
42
VCCIOA
14
VCCIOB
31
AVCC
46
PWREN#
41
XTOUT
44
XTIN
43
EECS
48
EESK
1
EEDATA
2
TEST
47
RESET#
4
RSTOUT#
5
3V3OUT
6
USBDM
8
USBDP
7
U7
FT2232D
DBG+3.3v
+5V
R16 27
R17 27
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
P3
Header 10X2
DBG+3.3V
DBG+3.3V
DBG_JTAG_EN
R20
10K
R21
1.5K
R18
1.5K
R24
330
+5V
+5V
+5V+5V
XTDI
XTMS
TCK
TDI/DI
TDO/DO
TMS/OUTEN
0.1UF
C42
0.1UF
C38
0.1UF
C39
0.1UF
C40
0.1UF
C41
0.1UF
C33
USB Device Controller
Channel A : JTAG / SW Debug
Channel B : Virtual Com Port
R27
27
R26
27
R22
27
XTCK
R25
27
VCP_RX
VCP_TX
PC2/TDI
PC3/TDO/SWO
TMS/SWDIO
C34
.033UF
5V D- D+ ID G
1
2
3
4
7
5
6
P2
54819-0572
DBG+3.3V
SRSTN
TARGETCABLEn
XTDO
R23
27
TP4
TP3
TP2
TP1
TP5
TP6
DBG+3.3V
PLD JTAG TEST POINTS
PLD_TCK
PLD_TMS
PLD_TDI
PLD_TDO
R28
4.7K
DBG+3.3v
Debug Interface Logic
JTAG/SWD Interface
Input/Output
USB Interface
TDI
1
A5
2
A6
3
A7
4
GND (Bank 0)
5
VCCO (Bank 0)
6
A8
7
A9
8
A10
9
A11
10
TCK
11
VCC
12
GND
13
A12
14
A13
15
A14
16
A15
17
CLK1/I
18
CLK2/I
19
B0
20
B1
21
B2
22
B3
23
B4
24
TMS
25
B5
26
B6
27
B7
28
GND (Bank 1)
29
VCCO (Bank 1)
30
B8
31
B9
32
B10
33
B11
34
TDO
35
VCC
36
GND
37
B12
38
B13
39
B14
40
B15/GOE1
41
CLK3/I
42
CLK0/I
43
A0/GOE0
44
A1
45
A2
46
A3
47
A4
48
Bank 0 Bank 1
U6
LC4032V-75TN48C
DBG+3.3V
MCURSTn
DBGOUTLED
TARGETCABLEn
RESET_SWn
0.1UF
C32
DBG+3.3V
Omit
JP16
USBSH
CS
1
SK
2
DI
3
DO
4
GND
5
ORG
6
NC
7
VCC
8
1K 64X16
U8
CAT93C46
1 2
Y3
6.00MHz
27PF
C36
27PF
C37
PB7/TRST
0.1UF
C35
R19
4.7K
DBG+3.3V
INT_TCK
SWO_EN
VCP_TX_SWO
MODE
MODE is reserved
for future use.
TCK/SWCLK
TMS/SWDIO
R29
4.7K
HIBERNATEn
DBG+3.3V
TVCC_CTRL
USB and Debugger Interfaces