LPC2458 NXP Semiconductors, LPC2458 Datasheet - Page 32

• Manufacturer Part Number: LPC2458
• Description: NXP Semiconductors designed the LPC2458 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2458
Product data sheet
7.19.1 Features
7.19 I
7.20 I
The LPC2458 contains three I
The I
(SCL), and a serial data line (SDA). Each device is recognized by a unique address and
can operate as either a receiver-only device (e.g., an LCD driver) or a transmitter with the
capability to both receive and send information (such as memory). Transmitters and/or
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I
be controlled by more than one bus master connected to it.
The I
The I
The I
and one word select signal. The basic I
master, and one slave. The I
and receive channel, each of which can operate as either a master or a slave.
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C-bus serial I/O controller
S-bus serial I/O controllers
Conforms to Multimedia Card Specification v2.11.
Conforms to Secure Digital Memory Card Physical Layer Specification, v0.96.
Can be used as a multimedia card bus or a secure digital memory card bus host. The
SD/MMC can be connected to several multimedia cards or a single secure digital
memory card.
DMA supported through the GPDMA controller.
I
I
devices connected to the same bus lines.
Easy to configure as master, slave, or master/slave.
Programmable clocks allow versatile rate control.
Bidirectional data transfer between masters and slaves.
Multi-master bus (no central master).
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus.
Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus.
Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
The I
2
2
2
2
2
2
C0 is a standard I
C1 and I
C-bus is bidirectional, for inter-IC control using only two wires: a serial clock line
C-bus implemented in LPC2458 supports bit rates up to 400 kbit/s (Fast I
S-bus provides a standard communication interface for digital audio applications.
S-bus specification defines a 3-wire serial bus using one data line, one clock line,
2
C-bus can be used for test and diagnostic purposes.
2
C2 use standard I/O pins and do not support powering off of individual
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 1 September 2011
2
C compliant bus interface with open-drain pins.
2
S interface on the LPC2458 provides a separate transmit
2
C-bus controllers.
2
S connection has one master, which is always the
2
C-bus is a multi-master bus and can
Single-chip 16-bit/32-bit micro
LPC2458
© NXP B.V. 2011. All rights reserved.
2
C-bus).
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