702572 Spectrum Digital Inc, 702572 Datasheet - Page 31

• Manufacturer Part Number: 702572
• Description: XDS560R Target Adapter Cable For 14 Pin JTAG Header
• Manufacturer: Spectrum Digital Inc

Specifications of 702572

• Accessory Type: Target Adapter
• Features: Compatible With XDS510USB PLUS / XDS560R From Spectrum Digital, Includes 14 Pin JTAG Header
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XDS510USB PLUS Or XDS560R USB JTAG Emulator
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5346474

3.5.3 Configuring Multiple Processors
Vcc I/O
GND
Figure 3-8 shows a typical series linked multiprocessor configuration, which meets the
minimum requirements of the IEEE 1149.1 standard. The emulation signals in this
example are buffer to isolate the processor from the emulation and provide adequate
signal drive for the target system. One of the benefits of this type of interface is that you
can generally slow down the test clock to eliminate timing problems. Use the following
guidelines for multiprocessor support:
❏
❏
❏
same physical package for better control of timing skew.
to V
connected. A resistor value of 4.7 kW or greater is suggested.
These are not critical signals and do not have to be buffered through the same
physical package a TMS, TCK, TDI, and TDO. Unbuffered and buffered signals are
shown in this section.
The processor TMS, TDI, TDO, and TCK signals should be buffered through the
The input buffers of TMS, TDI, and TCK should have pull-up resistors connected
Buffering EMU0 and EMU1 is optional but highly recommended to provide isolation.
10
12
5
4
8
6
CC
GND
TVD
GND
GND
GND
GND
Emulation Header
I/O to hold these signals at a known value when the emulator is not
TCK_RET
Figure 3-8, Multiprocessor Connections
EMU0
EMU1
TRST
TMS
TDO
TCK
TDI
14
13
11
2
9
1
3
7
Vcc I/O
Spectrum Digital, Inc
TMS
TDI
TCK
EMU0
EMU1
TRST
TDO
TRST
TMS
TDI
TDO
TCK
EMU0
EMU1
Target Device
Target Device
3-13