Datasheet

 
 
SPRS161K − MARCH 2001 − REVISED JULY 2007
16
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
terminal functions (continued)
PBDATDIR.1
[IOPB1 − Input Data]
PBDATDIR.1
[IOPB1 − Output Data]
TCK/IOPB1 Pin
PBDATDIR.9
(Direction Bit)
TRST
RS
PBDATDIR.5
[OPB5 − Output Data]
TDI/OPB5 Pin
PBDATDIR.13
(Direction Bit)
TRST
RS
TDI
IOPBDATDIR.2
[IOPB2 − Input Data]
TDO/IOPB2 Pin
PBDATDIR.10
(Direction Bit)
TRST
RS
1
0
PBDATDIR.2
[IOPB2 − Output Data]
TDO
TMS
XF
TMS/XF Pin
TRST
TCK
To CPU
Pulldown
Pullup
Pullup
Pullup
TRST Pin
Pulldown
Bit 0
†
of SCSR4
†
This bit is a write-only bit.
Figure 7. JTAG/GPIO Pins Multiplexing Functional Block Diagram