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ML505/ML506/ML507 Evaluation Platform
www.xilinx.com
39
UG347 (v3.1.1) October 7, 2009
Detailed Description
R
The JTAG debug port supports the four required JTAG signals: TCK, TMS, TDI, and TDO.
It also implements the optional TRST signal. The frequency of the JTAG clock signal can
range from 0 MHz (DC) to one-half of the processor clock frequency. The JTAG debug port
logic is reset at the same time the system is reset, using TRST. When TRST is asserted, the
JTAG TAP controller returns to the test-logic reset state.
Figure 1-7
shows a 38-pin Mictor connector that combines the CPU Trace and the CPU
Debug interfaces for high-speed, controlled-impedance signaling.
Note:
MICTOR_* pins are only available on the ML507 board. These pins are not connected on the
ML505 and ML506 boards.
Table 1-21
shows the CPU trace/debug connections from P22 to the FPGA and BDM.
Figure 1-7:
Combined Trace/Debug Connector Pinout
Table 1-21:
CPU Trace/Debug Connection to FPGA
Pin Name
(1)
FPGA Pin (U1)
Mictor Pin (P22)
BDM Pin (J51)
-
NC
1
-
NC
2
-
3
-
NC
4
MICTOR_5
A24
5
TRC_CLK
AD9
6
PC4_HALT_B
(CPU_HALT_N)
W9
7
11
-
NC
8
3
7
3
5
33
3
1
29
27
25
2
3
21
19
17
15
1
3
11
9
7
5
3
1
CPU_TR
S
T
FPGA_C
S
0_B
CPU_TM
S
CPU_TCK
NC
NC
NC
NC
NC
NC
NC
NC
NC
MICTOR_16
MICTOR_29
MICTOR_27
MICTOR_25
MICTOR_2
3
MICTOR_
3
7
MICTOR_
3
5
MICTOR_
33
MICTOR_
3
1
CPU_TDO
PC4_HALT_B
MICTOR_5
TRC_T
S
6
TRC_T
S
5
TRC_T
S
4
TRC_T
S3
TRC_T
S
1E
TRC_T
S
2E
TRC_T
S
2O
TRC_T
S
1O
MICTOR_20
MICTOR_22
MICTOR_18
TRC_CLK
TRC_V
S
EN
S
E
3
8
3
6
3
4
3
2
3
0
28
26
24
22
20
18
16
14
12
10
8
6
4
2
Mictor
3
8 (P22)
2.5V
UG
3
47_06_011008
GND, G1, G2, G
3
, G4, G5
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