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TX4939XBG-400
This highly functional, high-performance family contains an encoder, and is well adapted to digital information equipment.
TX49 Family
64-Bit TX System RISC
RTC SIO SPI I
2
C
AC-Link/
I
2
S
Encoder
DDR-SDRAM
Controller
External Bus Interface
(NAND FLASH)
DMA Controller
10/100BASE-T
EtherMAC
ATA100
Video port
PCI Controller
IM BUS Bridge
TX49/H4 core
Debug Support Unit (DSU)
Data Cache
(32K)
Instruction
Cache (32K)
IU
MMU
BIU
Write
Buffer
Floating-Point Unit (FPU)
G BUS Interface
General
Purpose
Register
MAC unit
64-bit
G-BUS
32-bit IM BUS
64-bit RISC microcontroller with encoder, DDR-SDRAM controller, EtherMAC, and ATA100
The TX4939XBG-400 is based on a TX49/H4 core, and
contains an encoder, a DDR-SDRAM controller, an
ATA100, an EtherMAC, a PCI controller and other peripher-
als. It is a highly functional, high-performance, 64-bit RISC
microcomputer optimally applicable to digital information
appliances. The processor operates at a frequency of 400
MHz, while the PCI bus runs at a frequency of 33/66 MHz.
● TX49/H4 64-bit RISC core
● On-chip caching
4-way set-associative caches
Instruction cache: 32 Kbytes
Data cache: 32 Kbytes
Cache lock function
● Memory management unit
● Memory controller: DDR-SDRAM (32-bit, 400 MHz)
Supports NAND Flash, SRAM, ROM and NOR Flash
● Encoder: Supports DES, 3DES, AES, MD5, SHA1 and
Modular Exponentiation Operation Coprocessor
● DMA controller: 8 channels
● 10/100BASE-T EtherMAC: 2 channels
● ATA100: 2 channels
● Video port: 1-parallel I/O, 3-serial in
● PCI controller: 33/66 MHz
● AC-Link
● I
2
S
● SIO: 4 channels
● SPI
● I
2
C
● Interrupt controller
● Maximum operating frequency: 400 MHz
● I/O supply voltage: 3.3 V
Internal supply voltage: 1.25 V
● I/O (DDR 400): 2.6 V
I/O (less or equal to DDR 333): 2.5 V
● Package: 456-pin PBGA (with 36-pin thermal balls)
TX4939 reference board
This board consists of a CPU module and a base board.
CPU module
● TX4939XBG-400
●
Contains four 512 M-bit DDR-SDRAMs suitable for the
DDR400 in the standard configuration sized totally at 256 MB.
●
Contains a power supply necessary to drive the DDR memory.
●
Supports an EJTAG interface that allows data to be read and written.
● Supports a DIP switch used for boot setting.
●
Provided with the CPU around which reset, clock and RTC circuits are installed.
Base board
●
The TX4939 contains two channels of Ethernet controllers each of
which consists of a 10/100M Ethernet MAC and an external PHY.
● Supports a NOR flash ROM (x 16 bits) consisting of 32
MB of a user ROM and 8 MB of a monitor ROM.
● Contains 32 MB of a NAND flash ROM (x 8 bits).
● Supports two channels of ATA (IDE) interfaces.
● Contains an AUDIO (AC-link/I
2
S) interface.
● Supports five channels of PCI slots.
● Provided with a USB 2.0 host.
● Supports four channels of RS-232C interfaces.
●
Contains a 100 Base-TX Ethernet controller used for debugging.
● Equipped with a ROM emulator connector.
● Supports two ISA slots.
● Contains a connector for external bus extension.
● Provided with an I/O controller.
● Contains a power supply.
● Full size: ATX size
● The model ID required for ordering TX4939 reference
board is RBHMA4700 (CE).
TX4939XBG
(400MHz)
RS-232C
2 channels
DDR SDRAM
256MB
AMR Connector
NOR
FLASH ROM
NAND
FLASH ROM
Ethernet x2
10/100M
IDE Connector
USB 2.0 Host
VT6212
PCI Card Slot
3.3V x3.5V x2
ISA Connector
Ethernet
(100M)
Connector for external bus extension (150 pin)
32-bit
Local Bus (8/16-bit)
PCI Bus
