Specifications

Host/Module Interfaces
Rev 2.0 Apr.10 Proprietary and Confidential 59
USIM interface
Note: This section applies only to UMTS (MC8xxx) modules.
The module is designed to support one USIM (Universal Subscriber Identity
Module). The USIM holds account information, allowing users to use their
account on multiple devices.
The USIM interface has four signals (plus Ground). These are defined in
Tabl e 5- 4 with an example circuit shown in Figure 5-2 on page 60. (For USIM card
contacts, see Figure 5-3 on page 60.)
Table 5-4: USIM pins
Pin name USIM contact number Function
XIM_VCC 1 USIM VCC
XIM_RESET 2 Active low USIM reset
XIM_CLK 3 Serial clock for USIM data
XIM_DATA 7 Bi-directional USIM data line
XIM_GND 5 Ground