TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 709
TX4939XBG-400
Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet
1.TX4939XBG-400.pdf
(740 pages)
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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Electrical
27.1. Extended EJTAG Interface
The TX4939 Extended EJTAG (Enhanced Joint Test Action Group) Interface provides two real-time debugging functions.
One is the IEEE1149.1 standard compliant JTAG Boundary Scan Test, and the other is the Debugging Support Unit (DSU)
that is built into the TX49/H4 core.
Please contact your local Toshiba Sales representative for more information regarding how to connect the emulation probe.
The two functions of the Extended EJTAG Interface operate in one of two modes.
Rev. 3.1 November 1, 2005
JTAG Boundary Scan Test
□ IEEE1149.1 compatible TAP Controller
□ Supports the following five instructions: EXTEST, SAMPLE/PRELOAD, IDCODE, BYPASS, HIGHZ
Real-time Debugging
□ Real-time debugging using an emulation probe (made by Corelis or YDC)
□ Execution control (run, break, step, register/memory access)
□ Real-time PC tracing
PC Trace Mode
□ Execution control (fun, pause, access single steps, access internal register/system memory)
□ JTAG Boundary Scan Test
Real-time Mode
□ Real-time PC tracing
JTAG Boundary Scan
Real-time Debugging
PC Tracing Mode
Table 27-1 EJTAG Interface Function and Operation Code
Boundary Scan Test
Execution Control
27-1
Off
Chapter 27. EJTAG Interface
Real-time PC Tracing
Toshiba RISC Processor
On
⎯
TX4939
27
27
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