Quectel EM05 Hardware Design page 18

GPIO_8-
28
AUDIO_3
29 SSIC-TxN
30 UIM-RESET
31 SSIC-TxP
32 UIM-CLK
33 GND
34 UIM-DATA
35 SSIC-RxN
36 UIM-PWR
37 SSIC-RxP
38 N/C
39 GND
GPIO_0
40
(GNSS_SCL)
41 N/C
GPIO_1
42
(GNSS_SDA)
43 N/C
GPIO_2
44
(GNSS_IRQ)
45 GND
GPIO_3
46
(SYSCLK)
47 N/C
GPIO_4
48
(TX_BLANKING)
49 N/C
50 N/C
51 GND
52 N/C
EM05_Hardware_Design
PCM_SYNC IO
NC
USIM_RESET DO
NC
USIM_CLK DO
GND
USIM_DATA IO
NC
USIM_VDD PO
NC
NC
GND
I2C_SCL DO
NC
I2C_SDA IO
NC
GNSS_IRQ* DI
GND
RESERVED
NC
TX_BLANKING* DO
NC
NC
GND
NC
Confidential / Released
PCM data frame synchronization
signal
NC
Reset signal of (U)SIM card
NC
Clock signal of (U)SIM card
clock
Ground
Data signal of (U)SIM card data
NC
Power supply for (U)SIM card
NC
NC
Ground
I2C serial clock
Used for external codec
NC
I2C serial data
Used for external codec
NC
Ground
Reserved
NC
Tx blanking signal for external
GNSS module
NC
NC
Ground
NC
LTE Module Series
EM05 Hardware Design
1.8V
1.8V/3.0V
1.8V/3.0V
1.8V/3.0V
1.8V/3.0V
Pulled up to
1.8V internally
Pulled up to
1.8V internally
1.8V
1.8V
17 / 59