7 iic bus, 9 multimedia card interface – Rainbow Electronics GE863-PRO3 User Manual
Page 34
GE863-PRO
3
Product Description
80285ST10036a
Rev. 1 - 08/08/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 34 of 55
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International Telecommunication Union Recommendation ITU-R BT.656-4 Startof-Active-
Video (SAV) and End-of-Active-Video (EAV) synchronization sequence.
Using EAV/SAV for synchronization reduces the pin count (ISI_VSYNC, ISI_HSYNC are not used).
The polarity of the synchronization pulse is programmable to comply with the sensor signals.
4.7 IIC bus
The IIC bus interconnects components on a two-wire bus, made up of one clock line and one data line
with speeds of up to 400 Kbits per second, based on a byte-oriented transfer format.
The IIC is programmable as a master or a slave with sequential or single-byte access. Multiple master
capability is supported. Arbitration of the bus is performed internally and puts the IIC in slave mode
automatically if the bus arbitration is lost.
A configurable baud rate generator permits the output data rate to be adapted to a wide range of core
clock frequencies.
4.8 ISO7816 T0/T1 Interface
The ARM9 USART can be used according to ISO7816 T0/T1 operating mode. This mode permits
interfacing with Smart cards and Security Access Modules (SAM) communicating through an ISO7816
link. Both T = 0 and T = 1 protocols defined by the ISO7816 specification are supported.
4.9 MultiMedia Card interface
The Application processor provides a full MCI interface.
The MultiMedia Card Interface (MCI) supports the MultiMedia Card (MMC) Specification V3.11, the
SDIO Specification V1.1 and the SD Memory Card Specification V1.0. The MCI operates at a rate of
up to 100 MHz and supports the interfacing of 2 slot(s).
Each slot may be used to interface with a MultiMediaCard bus (up to 30 Cards) or with a SD Memory
Card. Only one slot can be selected at a time (slots are multiplexed).
The SD Memory Card communication is based on a 9-pin interface (clock, command, four data and
three power lines) and the MultiMedia Card on a 7-pin interface (clock, command, one data, three
power lines and one RFU).
The SD Memory Card interface also supports MultiMedia Card operations.