
190
6.3 User System Interface Circuit
The emulator is connected to the user system via the user interface cable. Figure 6.4 shows the
user system interface circuit of the emulator (HS7641KCM01H).
TDI
TCK
TMS
TDO
JTAG controller (EPF6016ATC144-2)
To user system
Y A
74LVT244
A Y
22
74LVT244
TDO
TRST
TRST
A Y
22
74LVT244
TCK
3Vcc
4.7 k
3Vcc
4.7 k
A Y
22
74LVT244
TMS
3Vcc
4.7 k
3Vcc
4.7 k
A Y
22
74LVT244
TDI
3Vcc
4.7 k
3Vcc
4.7 k
Y A
Y A
A Y
22
74LVT244
RESETP
URESET
BRK
ACK
3Vcc
4.7 k
22
74LVT125
3Vcc
4.7 k
3Vcc
4.7 k
3Vcc
4.7 k
ASEBRKAK
Figure 6.4 User System Interface Circuit in the Emulator (HS7641KCM01H)
(Model Name: HS0005KCM03H)
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