HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 66

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table 2.6
Symbol
AS
Rev. 0, 07/98, page 50 of 453
CP-84
5
Bus Interface Lines (cont)
Pin Number
FP-88
16
Input/
Output
Input/
output
Description
Address strobe: Indicates whether the address
bus is active.
CPU modes 0,1
Master mode
Slave mode
Reset mode
System stop
mode
CPU modes 2, 3
Master mode
Slave mode
Reset mode
System stop
mode
Output line. The address bus
(A
is driven active low.
Input, but ignored by the SCA.
Input.
Input.
Output line. The address bus
(A
is driven active low.
Input line. The SCA regards
the address bits (A
valid | when this line is driven
active low.
Input.
Input.
0
1
A
A
23
23
) is valid when this line
) is valid when this line
1
A
7
) as