LISA-U1 series - System Integration Manual
3G.G2-HW-10002-3
Preliminary
Design-In
Page 90 of 125
2.2
Design Guidelines for Layout
The following design guidelines must be met for optimal integration of LISA-U1 series modules on the final
application board.
2.2.1
Layout guidelines per pin function
This section groups LISA-U1 series modules pins by signal function and provides a ranking of importance in
layout design.
Very Important
Careful Layout
Common Practice
Legend:
V_BCKP
GND
V_INT
RSVD
GND
GND
GND
DSR
RI
DCD
DTR
GND
RTS
CTS
TXD
RXD
GND
VUSB_DET
PWR_ON
GPIO1
GPIO2
RESET_N
GPIO3
GPIO4
GND
USB_D-
USB_D+
2
3
4
5
6
7
8
9
10
11
12
1
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
GND
VCC
VCC
VCC
GND
SPI_MRDY
SPI_SRDY
SPI_MISO
SPI_MOSI
SPI_SCLK
SPK_N
GND
SPK_P
RSVD
GPIO5
VSIM
SIM_RST
SIM_IO
SIM_CLK
SDA
SCL
I2S_RXD
I2S_CLK
I2S_TXD
I2S_WA
MIC_P
MIC_N
64
63
62
61
60
59
58
57
56
55
54
65
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
29
30
31
32
33
34
35
36
37
38
28
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
75
74
73
72
71
70
69
68
67
66
76
GND
RSVD
GND
GND
GND
GND
GND
ANT
GND
GND
GND
Figure 46: Module pin-out with ranked importance for layout design (LISA top view)
