Parallel Jtag Interface Connector; Block Diagram Of The Parallel Jtag Interface; Parallel Jtag Interface Connector Description - Motorola 56F827 Hardware User Manual

2.8.2 Parallel JTAG Interface Connector

The Parallel JTAG Interface Connector, P2, allows the 56F827 to communicate with a
Parallel Printer Port on a Windows PC; reference
user can download programs and work with the 56F827's registers.
pin-out for this connector. When using the parallel JTAG interface, the jumper at JG1
should be removed, as shown in
DB-25 Connector
P_RESET
Jumper Removed:
Enable JTAG I/F
Jumper Pin 1-2:
Disable JTAG I/F
Figure 2-6. Block Diagram of the Parallel JTAG Interface
Table 2-6. Parallel JTAG Interface Connector Description
Pin #
MOTOROLA
Freescale Semiconductor, Inc.
Table 2-5.
Parallel JTAG Interface
TDI IN
TDO
OUT
P_TRST IN
TMS
IN
TCK
IN
+3.3V
JG1
1
2
Signal
1 NC
2 PORT_RESET
3 PORT_TMS
4 PORT_TCK
5 PORT_TDI
6 PORT_TRST
7 NC
8 PORT_IDENT
9 PORT_VCC
Technical Summary
For More Information On This Product,
Go to: www.freescale.com
Figure 2-6. By using this connector, the
OUT TDI
IN
TDO
OUT TRST
OUT
TMS
OUT TCK
IN OUT RESET
EN
P2
Pin # Signal
14 NC
15 PORT_IDENT
16 NC
17 NC
18 GND
19 GND
20 GND
21 GND
22 GND
Debug Support
Table 2-6 shows the
56F827
2-9