Specifications
Electrical Specifications
Rev 8 Apr.14 Proprietary and Confidential - Contents subject to change 25
Figure 3-2: Expanded RF block diagram
Host interface pin assignments
The MC7304 host I/O connector provides pins for power, serial communications,
and control. Pin assignments are listed in Tabl e 3-1. See the following tables for
pin details based on interface types:
• Table 3-2, Power and ground specifications, on page 30
• Table 3-3, USB interface, on page 30
• Table 3-4, SIM interface signal, on page 31
• Table 3-5, Module control signals, on page 34
Note: On any given interface (USB, SIM, etc.), leave unused inputs and outputs as no-
connects.
B7
B5
B3
B8
B20
B1
B20
B20
B1
B3
HB
LB
B5
B8
PRX_LB1
TX_HB
TX_MB4
TX_LB1
PRX_MB3
TX_LB4
PRX_LB3
PRX_MB1
DRX_LB1
DRX_LB2
DRX_MB
DRX_HB
GSM1800/1900
LB
HB
GSM850/900
B7
PRX_LB2
PRX_MB2
TX_LB2
TX_MB2
GNSS
B5 / B8
B7
DP6T
B1 / B3
PRX_HB
B5 / GSM850
B8 / GSM900
B3 / GSM1800
B1 / B2 / B3
B5 / B8
Main
Diversity
B2 / GSM1900
B2
B2
GNSS
GNSS
SP10T
SP8T
Bias Circuit