TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 246

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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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RTC
11.2.
The RTC has two groups of signal set. One is for external interface and the other is for internal interface. This internal
interface consists of uni-directional 8 bits data bus and control signal to attach to IM-Bus.
11.2.1.
The actual voltage appears on VDDR terminal may differ depend on each device characteristic.
Rev. 3.1 November 1, 2005
Group
Power Signal
X’tal
Signal
VDDR
RTC IP Pin Description
RTC IP External Pin Description
Signal Name
RTCVDD
X32IN
X32OUT
ALARM*
VDDR
CNT
1
1
1
1
1
I/O
I
I
O
O
O
Independent RTC power supply. 2.7 V – 3.3 V
Alarm Signal. (Low Active, Open Drain)
Description
X’tal terminal (input)
X’tal terminal (output)
RTC Regulated Power Terminal. External decupling capacitance
should be attached.
11-2
Toshiba RISC Processor
TX4939
11
11

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