User's Manual

Cinterion
®
ELS31-VA/ELS51-VA Hardware Interface Description
2.1 Application Interface
56
 ELS31-VA_ELS51-VA_HID_v01.000 2017-01-04
Confidential / Preliminary
Page 15 of 106
Signal pads that are not used should not be connected to an external application.
Please note that the reference voltages listed in Table 2 are the values measured directly on
the ELS31-VA/ELS51-VA module. They do not apply to the accessories connected.
Table 1: Pad assignments
Pad no. Signal name Pad no. Signal name Pad no. Signal name
1 GND 23 GPIO20/PCM_I2S_OUT 45 USB_DP
2 GND 24 GPIO22/PCM_I2S_FSC 46 USB_DN
3 GND 25 GPIO21/PCM_I2S_IN 47 GND
4 GND 26 GPO23/PCM_I2S_CLK 48 GND
5 BATT_RF 27 I2CDAT 49 GND
6 GND 28 I2CCLK 50 GND
7 ADC1 29 GPIO17/TXD1/HOST_ACTIVE 51 GND
8 ON 30 GPIO16/RXD1/AP_WAKEUP 52 GND
9 GND 31 GPIO18/RTS1/CP_WAKEUP 53 BATT_BB
10 V180 32 GPIO19/CTS1/SUSPEND 54 GND
11 RXD0 33 EMERG_RST 55 GND
12 CTS0 34 GND 56 DIV_ANT
13 TXD0 35 GPIO25 57 GND
14 RING0/GPIO24 36 GPIO8/COUNTER 58 GND
15 RTS0 37 GPIO7 59 RF_OUT
16 Not connected 38 GPIO6 60 GND
17 CCRST 39 LED/GPO5 61 GND
18 CCIN 40 GPIO4/FST_SHDN 62 GND
19 CCIO 41 DSR0/GPIO3 63 GND
20 CCVCC 42 DCD0/GPIO2 64 GND
21 CCCLK 43 DTR0/GPIO1 65 GPIO27/SPI_CS2
22 VCORE 44 VUSB 66 GPO26/SPI_CS1
Centrally located pads
67 GND 83 Do not use (test) 99 GND
68 GND 84 GND 100 GND
69 GND 85 GND 101 GND
70 GND 86 GND 102 GND
71 GND 87 Do not use (test) 103 GND
72 Not connected 88 GND 104 Not connected
73 GND 89 GND 105 Not connected
74 Do not use (test) 90 GND 106 SPI_MOSI
75 Do not use (test) 91 Do not use (test) 245 GND
76 Do not use (test) 92 GND 246 HSIC_DATA
77 Do not use (test) 93 SDIO0 247 HSIC_STRB
78 Do not use (test) 94 SDIOCLK 248 SPI_CLK
79 Not connected 95 SDIO1 249 SPI_MISO
80 Do not use 96 SDIO2 250 GND
81 GND 97 SDIO3 251 SDIOCMD
82 GND 98 GND 252 GND