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bdi
RDI
JTAG interface for RDI Debuggers, BDI1000
User Manual
7
© Copyright 1999-2003 by ABATRON AG
V 1.10
2.1.2 Adaptive Clocking
Adaptive clocking is a feature which ensures that the BDI1000 never loses synchronization with the
target device, whatever the target clock speed is. To achieve this, BDI1000 uses two signals TCK and
RTCK. When adaptive clocking is selected, BDI1000 issues a TCK signal and waits for the Returned
TCK (RTCK) to come back. BDI1000 does not progress to the next TCK until RTCK is received. For
more information about adaptive clocking see ARM documentation.
Note
:
Adaptive clocking is only supported with a special target cable. This special cable can be ordered
separately from Abatron.
For TARGET B connector signals see table on next page.
The green LED «TRGT» marked light up when target is powered up
1 - Vcc Target
2 - NC
3 - TRST
4 - NC
5 - TDI
6 - NC
7 - TMS
8 - GROUND
9 - TCK
10 - GROUND
11 - RTCK
12 - NC
13 - TDO
14 - NC
15 - RESET
16 - NC
17 - NC
18 - NC
19 - NC
20 - NC
20 pin Multi-ICE
Connector
1
19
20
2
BDI
1000
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M
M
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Target System
ARM
BDI
TRGT
MODE
15
1
16
2
I
TARGET A
TARGET B