Baseband Electrical Interfaces: Sim - Nokia RM-761 Service Manual

RM-761; RM-799; RM-800
System Module
• Burst mode access (up to 78MHz)
• 16KB Instruction cache
• Up to 128Mbit/256Mbit PSRA
• 1.8V supply voltage for low power operation
• 16 bit bus width, A/D Muxed
• Burst mode access (up to 78MHz)
The product utilize Nokia Combo memory ball out. 4x10 or 6x10 matrix, D3000 is address and data bus
multiplex part in the design.
Figure 60 Memory interface connection

Baseband electrical interfaces: SIM

The Universal Subscriber Identity Module or USIM card is the logical extension of the SIM card into the 3G
environment, as an evolution of the SIM card. It can be used for support of GSM Phase 2 and 3G modes.
The X-GOLD213 USIM interface is compatible with ISO 7816-3 IC card standard, required by GSM11.12 (3.0V
and GSM 11.18 (1.8V) standards. It supports both 1.8V and 3.0V SIM Cards with T=0 and T=1 protocols
supported by hardware. For 3V SIM cards, the nominal supply voltage is 2.85V. The SIM card is provided with
a 3.25MHz clock and can be configured into low power modes. All SIM related clock signals are controlled by
the SIM_CTRL register in X-Gold213.
Figure 61 SIM card holder and signal protection
Issue 1 COMPANY CONFIDENTIAL Page 5 – 19
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