CHAPTER 2 PIN FUNCTION
PRELIMINARY
NEC confidential and Proprietary
32
2.2.9 JTAG Boundary Scan
Pin Name
Serial No.
Address No.
I/O Level
Function
JCK
I
LVTTL
Boundary scan clock input.
Ground this pin when not used.
JDI
I
LVTTL
(Internal
pull-up)
Boundary scan data input.
JDO
O
3-state
LVTTL
Boundary scan data output.
Open this pin when not used.
JMS
I
LVTTL
(Internal
pull-up)
Boundary scan mode selects signal input.
JRST_B
I
LVTTL
(Internal
pull-up)
Boundary scan reset signal input.
2.2.10 Reset pin
Pin Name
Serial No.
Address No.
I/O Level
Function
RESET_B
I
LVTTL
Reset signal
The RESET_B signal provides a means of initializing the
µ
PD98413 (i.e. at power on). After the completion of a
reset, the
µ
PD98413 can start normal operation. Once
RESET_B has been set to low, it resets the
µ
PD98413
internal state machines and registers, and forces all 3-
state signals to the high impedance state. Reset input is
performed asynchronously. If low during operation, current
state will be lost.
2.2.11 Power and Grounding Pins
Pin Name
Serial No.
Address No.
I/O
Function
V
DD
−
Power supply pins
GND
−
Ground
pins
2.2.12 Others
Pin Name
Serial No.
Address No.
I/O Level
Function
IC
−
Internal circuit connection test pins.
Содержание NEASCOT-P65
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