GPIO0
GPIO5
GPIO4
GPIO2
GPIO3
RSEL
HW_CTRL
PDN
4.99k
R94
1
2
3
4
S6
PDN
DIGITAL CONTROL PIN CONNECTIONS
0402
49.9
R138
DNP
0
R129
0
R130
0
R131
0
R132
0
R133
0
R134
0
R135
0
R136
0
R137
1
2
3
4
5
6
13
14
15
16
7
12
8
9
10
11
S5
XO MARGIN
XO_R1
1.0k
R128
U2A_GPIO4
U2A_GPIO5
U2A_GPIO7
U2A_GPIO12
U2A_GPIO9
U2A_GPIO8
U2A_GPIO10
U2A_DAC0
U2A_GPIO6
2.32k R118
5.62k R119
10.5k R120
18.7k R121
34.8k R122
84.5k R123
1.00M R124
DNP
XO_R2
XO_R3
XO_R4
XO_R5
XO_R6
XO_R7
XO_R8
0
R117
LABEL SW = XO MARGIN
LABEL POSITIONS:
1 = 0 V
2 = 0.2 V
3 = 0.4 V
4 = 0.6 V
5 = 0.8 V
6 = 1.0 V
7 = 1.2 V
8 = 1.4 V
SDA
10pF
C90
DNP
10pF
C91
DNP
SCL
0
R109
0
R110
1.5k
R108
DNP
VDD_R
1.5k
R105
DNP
0.1µF
C89
1µF
C88
270
R103
Yell ow
1
2
D8
USER NOTE:
RSEL, GPIO[1:3] are 3-level input pins:
LO = VIN < 0.4V
MID = VIN ~ 0.9V (13k/4.99k voltage divider)
HI = VIN > 1.4V
GPIO[0,4,5], HW_SW_CTRL, and PDN are 2-level input pins:
LO = VIN < 0.4V
HI = VIN > 1.4V
GPIO5 can be an 8-level input pin in XO MARGIN mode. (GPIO5 Jumper should be left OPEN)
0V = 0 ohm pulldown only
0.2V = 2.32k pulldown only
0.4V = 5.62k pulldown only
0.6V = 10.5k pulldown only
0.8V = 18.7k pulldown only
1.0V = 34.8k pulldown only
1.2V = 84.5k pulldown only
1.4V = OPEN
1.00k
R92
1
2
3
JP17
RSEL
VDD_R
1.00k
R95
1
2
3
JP18
HWCTRL
VDD_R
13.0k
R93
VDD_R
4.99k
R97
DNP
13.0k
R96
DNP
VDD_R
1
2
3
JP19
GPIO0
VDD_R
1
2
3
4
S4
SYNC
1.00k
R100
1
2
3
JP20
GPIO1
VDD_R
4.99k
R102
13.0k
R101
VDD_R
1.00k
R104
1
2
3
JP21
GPIO2
VDD_R
4.99k
R107
13.0k
R106
VDD_R
1.00k
R111
1
2
3
JP22
GPIO3
VDD_R
4.99k
R113
13.0k
R112
VDD_R
1.00k
R114
1
2
3
JP23
GPIO4
VDD_R
4.99k
R116
DNP
13.0k
R115
DNP
VDD_R
1
2
3
JP24
GPIO5
13.0k
R125
VDD_R
0
R126
1.0k
R99
13.0k
R98
LABEL JP's PER
COMMENTS
LABEL JP PINS:
1 = HI
2 = MID
3 = LO
13.0k
R127
VDD_R
GPIO1
U2A_SDA
U2A_SCL
SH17_2-3
SH18_2-3
SH19_1-2
SH20_2-3
SH21_2-3
SH22_2-3
SH23_2-3
SH24_2-3
EVM Schematic
37
SNAU184 – August 2015
LMK03328EVM User’s Guide
Copyright © 2015, Texas Instruments Incorporated