TOBY-L4 series - System Integration Manual
UBX-16024839 - R04
Appendix
Page 135 of 143
Appendix
A
Migration between TOBY-L2 and TOBY-L4
A.1
Overview
TOBY-L2 and TOBY-L4 series cellular modules have the same TOBY form factor (35.6 x 24.8 mm LGA), with a
different number of pins: as illustrated in Figure 72, TOBY-L2 modules have 152 pins, while TOBY-L4 modules
have the same 152 pins of TOBY-L2 modules plus 96 additional pins, reaching a total number of 248 pins.
Figure 72 shows that all the functions provided by the 152 pins of TOBY-L2 modules are also available on the
same pins of TOBY-L4 modules, which provide additional functions (RGMII and UART3 interfaces) on RSVD pins
of TOBY-L2 modules, intended to be left unconnected on a board designed for TOBY-L2 modules.
This means that TOBY-L2 and TOBY-L4 series modules can be alternatively mounted on a single application
board using exactly the same copper mask, solder mask and paste mask: TOBY-L4 series modules can be
mounted on any design appropriately implemented for TOBY-L2 modules, given that any additional interface
provided by TOBY-L4 modules will result not connected.
SDIO_CMD
SDIO_D0
GND
VCC
VCC
GND
ANT_DET
SDA
SIM_IO
SIM_RST
GPIO5
GPIO6
SDIO_D2
SDIO_CLK
RSVD
RSVD
I2S_WA
I2S_CLK
I2S_RXD
SDIO_D1
VCC
GND
SCL
SIM_CLK
VSIM
HOST_SELECT1
RSVD
I2S_TXD
SDIO_D3
V_INT
VUSB_DET
GND
RSVD
GPIO1
RSVD
RSVD
TXD
RSVD
USB_D-
HOST_SELECT0
GPIO3
RESET_N
V_BCKP
GPIO2
PWR_ON
RXD
USB_D+
GPIO4
GND
R
SV
D
GND
GND
R
SV
D
GND
GND
GND
GND
GND
GND
GND
GND
GND
R
SV
D
ANT2
ANT1
GND
R
SV
D
GND
GND
R
SV
D
GND
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
R
SV
D
RI
DSR
RSVD
CTS
DTR
DCD
RSVD
RSVD
RTS
RSVD
11
10
7
5
4
2
1
21
19
18
16
15
13
12
29
27
26
24
23
8
6
3
22
20
17
14
28
25
9
65
66
69
71
72
74
75
55
57
58
60
61
63
64
47
49
50
52
53
68
70
73
54
56
59
62
48
51
67
90
91
92
78
77
76
93
100
79
80
83
85
86
88
89
82
84
87
81
32
31
30
44
45
46
145
152
43
42
39
37
36
34
33
40
38
35
41
99
98
97
96
95
94
106
105
104
103
102
101
108
107
124
123
130
129
128
127
126
125
136
135
134
133
132
131
138
137
144
143
142
141
140
139
151
150
149
148
147
146
114
113
112
111
110
109
120
119
118
117
116
115
122
121
TOBY-L2
Pin 93-152: GND
SDIO_CMD
SDIO_D0
GND
VCC
VCC
GND
ANT_DET
SDA
SIM_IO
SIM_RST
GPIO5
GPIO6
SDIO_D2
SDIO_CLK
RSVD
RSVD
I2S_WA
I2S_CLK
I2S_RXD
SDIO_D1
VCC
GND
SCL
SIM_CLK
VSIM
HOST_SELECT1
RSVD
I2S_TXD
SDIO_D3
V_INT
VUSB_DET
GND
RSVD
GPIO1
RXD3
TXD3
TXD
ETH_TX_CLK
USB_D-
HOST_SELECT0
GPIO3
RESET_N
V_BCKP
GPIO2
PWR_ON
RXD
USB_D+
GPIO4
GND
R
SV
D
GND
GND
R
SV
D
GND
GND
GND
GND
GND
GND
GND
GND
GND
R
SV
D
ANT2
ANT1
GND
R
SV
D
GND
GND
R
SV
D
GND
ET
H_
R
X
_C
LK
ET
H_
R
X
_C
TL
ET
H_
R
X
D1
ETH
_TX
D
0
ET
H_
TX
D1
ET
H_
TX
D3
ET
H_
TX
_C
TL
ET
H_
R
X
D2
ET
H_
R
X
D0
ET
H_
TX
D2
ET
H_
R
X
D3
RI
DSR
RSVD
CTS
DTR
DCD
RSVD
RSVD
RTS
RSVD
11
RI
10
DSR
7
RSVD
5
V_INT
4
VUSB_DET
2
GND
1
RSVD
21
GPIO1
19
RSVD
18
RSVD
16
TXD
15
CTS
13
DTR
12
DCD
29
ETH _TX_CLK
27
USB_D–
26
H OST_SELECT0
24
GPIO3
23
RESET_N
8
RSVD
6
RSVD
3
V_BCKP
22
GPIO2
20
PWR_ON
17
RXD
14
RTS
28
USB_D+
25
GPIO4
9
RSVD
65
SDIO_CMD
66
SDIO_D0
69
GND
71
VCC
72
VCC
74
GND
75
ANT_DET
55
SDA
57
SIM_IO
58
SIM_RST
60
GPIO5
61
GPIO6
63
SDIO_D2
64
SDIO_CLK
47
RSVD
49
RSVD
50
I2S_WA
52
I2S_CLK
53
I2S_RXD
68
SDIO_D1
70
VCC
73
GND
54
SCL
56
SIM_CLK
59
VSIM
62
H OST_SELECT1
48
RSVD
51
I2S_TXD
67
SDIO_D3
90
GND
91
RSVD
92
GND
78
GND
77
RSVD
76
GND
93
GND
100
GND
79
GND
80
GND
83
GND
85
GND
86
GND
88
GND
89
GND
82
GND
84
RSVD
87
ANT2
81
ANT1
32
GND
31
RSVD
30
GND
44
GND
45
RSVD
46
GND
145
GND
152
GND
43
ETH _
RX_CLK
42
ETH _
RX_CTL
39
ETH _
RXD1
37
ETH _
TXD0
36
ETH _
TXD1
34
ETH _
TXD3
33
ETH _
TX_CTL
40
ETH _
RXD2
38
ETH _
RXD0
35
ETH _
TXD2
41
ETH _
RXD3
99
GND
98
GND
97
GND
96
GND
95
GND
94
GND
106
GND
105
GND
104
GND
103
GND
102
GND
101
GND
108
GND
107
GND
124
GND
123
GND
130
GND
129
GND
128
GND
127
GND
126
GND
125
GND
136
GND
135
GND
134
GND
133
GND
132
GND
131
GND
138
GND
137
GND
144
GND
143
GND
142
GND
141
GND
140
GND
139
GND
151
GND
150
GND
149
GND
148
GND
147
GND
146
GND
114
GND
113
GND
112
GND
111
GND
110
GND
109
GND
120
GND
119
GND
118
GND
117
GND
116
GND
115
GND
122
GND
121
GND
TOBY-L4
155
RSVD
153
RSVD
157
RSVD
156
RSVD
154
RSVD
158
RSVD
195
CTS1
193
RTS1
197
RSVD
196
RSVD
194
RSVD
198
RSVD
207
I2S1_RXD
206
I2S1_TXD
203
SCL1
201
RSVD
200
RSVD
217
MMC_D2
215
MMC_CMD
214
MMC_D0
212
MMC_D1
211
MMC_RST_N
209
GND
208
I2S1_CLK
222
ETH _MDIO
220
ETH _INTR
219
GND
204
SDA1
202
RSVD
199
RSVD
218
MMC_CD_N
216
MMC_CLK
213
MMC_D3
210
V_MMC
221
V_ETH
205
I2S1_WA
223
ETH _MDC
240
ADC1
241
GND
244
RSVD
246
RSVD
247
GPIO8
230
MIC_GND
232
GND
233
MIC2_N
235
GND
236
MIC1_N
238
GND
239
ADC2
225
RSVD
227
SPK_P
228
SPK_N
243
RSVD
245
RSVD
248
GPIO7
229
GND
231
MIC_BIAS
234
MIC2_P
237
MIC1_P
226
GND
242
RSVD
224
RSVD
162
RXD2
161
TXD2
160
RXD1
159
TXD1
168
USB_ID
163
RSVD
167
RSVD
166
RSVD
165
RSVD
164
RSVD
172
VSIM1
171
USB_SSRX–
170
U
169
SPI_MISO
182
SIM1_CLK
181
RSVD
180
RSVD
179
SPI_SCLK
178
SIM1_IO
173
SPI_CS
177
SIM1_RST
176
USB_SSTX–
175
U
174
SPI_MOSI
188
RSVD
183
RSVD
187
RSVD
186
RSVD
185
RSVD
184
RSVD
192
RSVD
191
RSVD
190
RSVD
189
RSVD
Pin 93-152: GND
Figure 72: TOBY-L2 and TOBY-L4 series modules pad layout and pin assignment
TOBY modules are also form-factor compatible with the u-blox LISA, SARA and LARA cellular module families:
although TOBY modules, LISA modules (33.2 x 22.4 mm, 76-pin LCC), SARA modules (26.0 x 16.0 mm, 96-pin
LGA) and LARA modules (26.0 x 24.0 mm, 100-pin LGA) each have different form factors, the footprints for the
TOBY, LISA, SARA and LARA modules have been developed to ensure layout compatibility.
With the u-blox “nested design” solution, any TOBY, LISA, SARA or LARA module can be alternatively mounted
on the same space of a single “nested” application board as described in the
Nested Design Application Note
