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1.
Overview and Features
1.1
Overview
The TMPR4937 (TX4937) is a standard microcontroller that belongs to the 64-bit TX System RISC TX49
family.
The TX4937 uses the TX49/H3 core as its CPU. The TX49/H3 core is a 64-bit RISC core that Toshiba
developed based on the MIPS III architecture of MIPS Technologies, Inc. (MIPS). For details of the
TX49/H3 core such as instruction sets, see "64-bit TX System RISC TX49/H2, TX49/H3, TX49/H4 Core
Architecture".
In addition to the TX49/H3 core, the TX4937 uses as microcontrollers for embedded applications an
External Bus Controller, DMA Controllers, SDRAM Controller, PCI Controller. The TX4937 also has
peripheral circuits such as a serial I/O port, a timer/counter, a parallel I/O port, an AC-link Controller and an
Interrupt Controller. By having an on-chip a data bus with a maximum width of 64 bits and an SDRAM
Controller with a memory clock frequency of 133 MHz, the TX4937 realizes low memory access latency and
high memory bandwidth. This allows the TX4937 to show its capacity as a high-performance CPU core.
1.2
Features
•
TX49/H3 core
Maximum Operating Frequency: 300 MHz (TMPR4937XBG-300), 333 MHz (TMPR4937XBG-333)
On-chip IEEE754-compliant single/double precision floating point unit (FPU) function
•
External Bus Controller (8 channels)
•
DMA (Direct Memory Access) Controllers (8 channels)
•
SDRAM Controller (4 channels)
64-bit Data Bus
Memory Clock Frequency: 133 MHz (For relationship between CPU clock and memory clock, see
Supports ECC/Parity
•
PCI Controller
Complies with PCI Local Bus Specification Revision 2.2
PCI Bus Clock Frequency: 66 MHz/33 MHz
•
Serial I/O Port (2 channels)
•
Timer/Counter (3 channels)
•
Parallel I/O Port (Maximum 16 bits)
•
AC-link Controller
•
Interrupt Controller
•
Selectable Little Endian mode or Big Endian mode
•
Low Power Consumption
Supports internal 1.5 V, IO block 3.3 V operation, and low power consumption mode (Halt)
•
Supports IEEE1149.1 (JTAG): Debugging Support Unit (EJTAG)
•
Package: 484-pin PBGA (with 64pin thermal ball)
(There is pin compatible nature with TX4927 except thermal balls.)
Chapter 1 Overview and Features
Section 6.1)
1-1
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