TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 611

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TX4939XBG-400

Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet

Specifications of TX4939XBG-400

Cpu Core
TX49/H4 90nm
Clock Mhz/max Mips
400/520
Inst./data Cache
32KB (4 Way)/32KB (4 Way)
Tlb
x
1cycle Mac
x
Volts (v)
1.25/2.5/3.3
Peripherals
DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
Companion Chip
TC86C001FG
Package
PGBA456

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I2C
22.1. Overview
I2C Controller is an interface between IMBus and I2C protocol.
The basic features of the I2C are outlined below:
Figure 22-1 shows the block diagram of the I2C Interface module.
Rev. 3.1 November 1, 2005
IM Bus
Interface to 32-bit IMBus.
One I2C output.
Single Master Operation.
Support Byte mode.
Interrupt or bit-polling driven data-transfers.
Supports 7 and 10 bit addressing.
Start/Stop/Repeated Start/Acknowledge generation.
Software programmable clock frequency.
GPIO mode.
Interface
FIFO
9x32
Bus
IM
Figure 22-1 Block Diagram of I2C Controller
Command
Prescale
Transmit
Register
Register
Register
Register
Register
Receive
Status
22-1
Chapter 22. I2C Controller
Command
Controller
Register
DataIO
Byte
Shift
Toshiba RISC Processor
Command
Generator
Controller
Clock
Bit
TX4939
SCL
SDA
22
22

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