EZ80F91MCU Datasheet, PDF (332/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
313
Table 203. OCI Pins (Continued)
Symbol
TDO
Name
Data Out
Type
Output
TRIGOUT Trigger Output
Output
Description
The output data changes on the falling edge of the
TCK signal.
Generates an active High trigger pulse when valid
OCI trigger events occur. Output is tristate when no
data is being driven out.
JTAG Boundary Scan
Introduction
This section describes coverage, implementation, and usage of the eZ80F91
boundary scan register based on the Joint Test Action Group (JTAG) standard. A
working knowledge of the IEEE 1149.1 specification, particularly Clause 11, is
assumed.
Pin Coverage
All pins are included in the boundary scan chain, except for the following:
• TCK
• TMS
• TDI
• TDO
• TRSTN
• V_DD
• V_SS
• PLL_V_DD
• PLL_V_SS
• RTC_V_DD
• X_IN
• X_OUT
• RTC_X_IN
• RTC_X_OUT
• LOOP_FILT
PS019209-0504
PRELIMINARY
On-Chip Instrumentation