Electrical Interface Between Baseband And Memory Card - Nokia RM-497 Service Manual

Pin Name
SIMDAT
GPIO19
SIMVDDO

Electrical Interface Between Baseband and Memory Card

Introduction
The D2800 JUNO (BCM21351) BB ASIC has an integrated SDIO interface which can be used to support an
external memory card. The SDIO interface I/O buffers are protected by the Z2301 EMI filter. In addition to the
integrated SDIO interface, GPIO15 is used as a card detection signal from the uSD card slot.
The signals on the SDIO interface can support 1.8V or 3.0V CMOS signaling levels. The VHCLDO2 supply from
the N2201 LOVIISA PMU determines the signaling levels.
Pin Name
SD1CK
SD1CMD
Page 5 – 30
Pin
D12
V6
A12
Figure 44 Electrical interface between baseband and SIM
Table 14 D2800 Baseband ASIC (BCM21351) Memory Card Interface Pins
Pin
F14
B13
COMPANY CONFIDENTIAL
Copyright © 2010 Nokia. All rights reserved.
SIM Interface
I/O
I/O
I
SDIO #1
I/O
O
I/O
Type
CMOS
CMOS
Type
CMOS SDIO Clock
CMOS SDIO Command
RM-497
System Module
Description
SIM data signal
SIM emergency
shut-down
1.8V / 3.0V Digital
Supply for SIM
Transceivers
Description
Issue 1