Rev. 2.00, 09/03, page 18 of 690
Classification
Symbol
I/O
Name
Function
Operating mode
control
MD6 to MD0
I
Mode set
Sets the operating mode. Do not
change values on these pins
during operation.
MD2 to MD0 set the clock mode,
MD3 and MD4 set the bus-width
mode of area 0 and MD5 sets the
endian. MD6 pin should be
connected to VssQ.
RESETP
I
Power-on reset
When low, the system enters the
power-on reset state.
RESETM
I
Manual reset
When low, the system enters the
manual reset state.
STATUS1,
STATUS0
O
Status output
Indicates the operating state.
BREQ
I
Bus request
Low when an external device
requests the release of the bus
mastership.
BACK
O
Bus request
acknowledge
Indicates that the bus mastership
has been released to an external
device. Reception of the
BACK
signal informs the device which
has output the
BREQ
signal that it
has acquired the bus.
System control
CA
I
Chip active
High in normal operation, and low
in hardware standby mode.
NMI
I
Non-maskable
interrupt
Non-maskable interrupt request
pin. Fix to high level when not in
use.
IRQ5 to IRQ0
I
Interrupt
requests 5 to 0
Maskable interrupt request pin.
Selectable as level input or edge
input. The rising edge or falling
edge is selectable as the detection
edge. The low level or high level is
selectable as the detection level.
IRL3
to
IRL0
I
Interrupt
requests 3 to 0
Maskable interrupt request pin.
Input a coded interrupt level.
Interrupts
PINT15 to
PINT0
I
Interrupt
requests 15 to 0
PINT interrupt request pin.
Address bus
A25 to A0
O
Address bus
Outputs addresses.
Data bus
D31 to D0
I/O
Data bus
32-bit bidirectional data bus.
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