Datasheet

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LPC3152_3154 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Preliminary data sheet Rev. 0.12 — 27 May 2010 33 of 88
NXP Semiconductors
LPC3152/3154
– PCM (Pulse Code Modulation): Single clocking physical format.
– IOM-2 (Extended ISDN-Oriented modular): Double clocking physical format.
• Twelve 8 bit slots in a frame with enabling control per slot.
• Internal frame clock generation in master mode.
• Receive and transmit DMA handshaking using a request/clear protocol.
• Interrupt generation per frame.
PCM is a very common method used for transmitting analog data in digital format. Most
common applications of PCM are digital audio as in audio CDs and computers, digital
telephony, and digital videos.
The IOM (ISDN Oriented Modular) interface is primarily used to interconnect
telecommunications ICs providing ISDN compatibility. It delivers a symmetrical full-duplex
communication link containing user data, control/programming lines, and status channels.
6.26 LCD interface
The LCD interface contains logic to interface to a 6800 (Motorola) or 8080 (Intel)
compatible LCD controller which supports 4/8/16 bit modes. This module also supports a
serial interface mode. The speed of the interface can be adjusted in software to match the
speed of the connected LCD display.
This module has the following features:
• 4/8/16 bit parallel interface mode: 6800-series, 8080-series.
• Serial interface mode.
• Supports multiple frequencies for the 6800/8080 bus to support high- and low-speed
controllers.
• Supports polling the busy flag from LCD controller to off-load the CPU from polling.
• Contains an 16 byte FIFO for sending control and data information to the LCD
controller.
• Supports maskable interrupts.
• Supports DMA transfers.
6.27 I
2
C-bus master/slave interface
The LPC3152/3154 contains two I
2
C master/slave interfaces. I
2
C-bus 0 can be used for
communicating directly with I
2
C-compatible external devices. I
2
C-bus 1 is internally
connected to support the following analog blocks: Li-ion charger, power supply unit, RTC,
audio ADC, audio DAC, and class AB amplifier.
This module has the following features:
• I2C0 interface: I
2
C0 is a standard I
2
C-compliant bus interface with open-drain pins.
This interface supports functions described in the I
2
C specification for speeds up to
400 kHz. This includes multi-master operation and allows powering off this device in a
working system while leaving the I
2
C-bus functional.
• I2C1 interface: internally connected to control the functions on the analog die.
• Supports normal mode (100 kHz SCL).