Circuit Descriptions
4-6
© Copyright ARM Limited 1999. All rights reserved.
4.2.2
Multi-ICE connector
A 20-way connector, PL5, situated at the top of the header card, allows debugging of
ARM710T using Multi-ICE. The pinout of PL5 is shown in Figure 4-2.
Figure 4-2 Pinout of Multi-ICE connector PL5
The Multi-ICE connector has the standard five JTAG signals, nTRST, TDI, TMS,
TCK and TDO, which are interspersed with ground pins to reduce noise.
The signal RTCK, returned TCK, is connected to TCK on the header card, to allow
Multi-ICE to make use of the adaptive clock timing option.
The signal nSRST can be used by the Multi-ICE unit to reset the ARM710T and ARM
development board.
The DBGRQ and DBGACK signals are not used by Multi-ICE.
4.2.3
EmbeddedICE connector
A 14-way connector, PL6, situated at the top of the header card, allows debugging of
ARM710T using EmbeddedICE. However, this method of debugging the ARM710T is
not recommended, as EmbeddedICE does not support cache processors, so will not
operate correctly if the cache of ARM710T is turned on.
For details of the pinout of PL6, see the schematic diagrams supplied in pdf format on
the accompanying disk.
PL5
1
3
5
7
9
11
13
15
17
19
2
4
6
8
10
12
14
16
18
20
VDD
GND
GND
GND
GND
GND
GND
GND
GND
GND
VDD
RTCK
TDO
nTRST
TDI
TMS
TCK
DBGRQ
DBGACK
nSRST
