MC68306 Motorola, MC68306 Datasheet - Page 92

• Manufacturer Part Number: MC68306
• Description: Integrated EC000 Processor
• Manufacturer: Motorola

5-2
1, 2, 5, 6 FFFFEFFF–
1. A(31–24) are copied from A23 (sign-extended) in 16 Mbyte emulation mode.
2. Write data ignored, read data indeterminate.
3. Duplicate of FFFFFFC0–FFFFFFFF.
4. Duplicate of FFFF7FE0–FFFF7FFF
1, 2, 6
FC
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
7
FFFFFFFE/F
FFFFFFFC/D
FFFFFFFA
FFFFFFF8
FFFFFFF6
FFFFFFF4/5
FFFFFFF2/3
FFFFFFF0/1
FFFFFFEF–
FFFFFFE8
FFFFFFE6
FFFFFFE4
FFFFFFE2
FFFFFFE0
FFFFFFDE
FFFFFFDC
FFFFFFDA
FFFFFFD8
FFFFFFD6
FFFFFFD4
FFFFFFD2
FFFFFFD0
FFFFFFCE
FFFFFFCC
FFFFFFCA
FFFFFFC8
FFFFFFC6
FFFFFFC4
FFFFFFC2
FFFFFFC0
FFFFFFBF–
FFFFF800
FFFFF7FF–
FFFFF7E0
FFFFF7DF–
FFFFF000
FFFFFFFF–
FFFFF000
00000000
A(31–0)
–
Table 5-1. MC68306 Memory Map
D(15–8) (EVEN ADDRESS)
PORT A PIN ASSIGNMENT
PORT A DATA DIRECTION
INTERRUPT ACKNOWLEDGE: VECTOR SUPPLIED ON D7–D0
MC68306 USER'S MANUAL
REFRESH RATE
PORT A DATA
RESERVED
SYSTEM
CHIP SELECT 7 CONFIGURATION (HIGH)
CHIP SELECT 6 CONFIGURATION (HIGH)
CHIP SELECT 5 CONFIGURATION (HIGH)
CHIP SELECT 4 CONFIGURATION (HIGH)
CHIP SELECT 3 CONFIGURATION (HIGH)
CHIP SELECT 2 CONFIGURATION (HIGH)
CHIP SELECT 1 CONFIGURATION (HIGH)
CHIP SELECT 0 CONFIGURATION (HIGH)
CHIP SELECT 7 CONFIGURATION (LOW)
CHIP SELECT 6 CONFIGURATION (LOW)
CHIP SELECT 5 CONFIGURATION (LOW)
CHIP SELECT 4 CONFIGURATION (LOW)
CHIP SELECT 3 CONFIGURATION (LOW)
CHIP SELECT 2 CONFIGURATION (LOW)
CHIP SELECT 1 CONFIGURATION (LOW)
CHIP SELECT 0 CONFIGURATION (LOW)
DRAM BANK 1 CONFIGURATION (HIGH)
DRAM BANK 0 CONFIGURATION (HIGH)
DRAM BANK 1 CONFIGURATION (LOW)
DRAM BANK 0 CONFIGURATION (LOW)
AVAILABLE FOR CHIP SELECT/DRAM
AVAILABLE FOR CHIP SELECT/DRAM
INTERRUPT CONTROL REGISTER
INTERRUPT STATUS REGISTER
2
RESERVED
RESERVED
RESERVED
RESERVED
2
2
3
4
PORT B PIN ASSIGNMENT
PORT B DATA DIRECTION
D(7–0) (ODD ADDRESS)
BUS TIMEOUT PERIOD
SERIAL MODULE
TIMER VECTOR
PORT B DATA
MOTOROLA