XCB56364PV100 MOTOROLA [Motorola, Inc], XCB56364PV100 Datasheet - Page 10

• Manufacturer Part Number: XCB56364PV100
• Description: 24-Bit Audio Digital Signal Processor
• Manufacturer: MOTOROLA [Motorola, Inc]

Signal/Connection Descriptions
External Memory Expansion Port (Port A)
1.5
When the DSP56364 enters a low-power standby mode (stop or wait), it tri-states the relevant port A
signals: D0–D7, AA0, AA1, RD, WR, CAS.
1.5.1
1.5.2
1-6
Signal Name
Signal Name
A0–A17
D0–D7
EXTERNAL MEMORY EXPANSION PORT (PORT A)
External Address Bus
External Data Bus
Output
Output
Input/
Type
Type
Freescale Semiconductor, Inc.
Table 1-5 External Address Bus Signals
State during
State during
For More Information On This Product,
Table 1-6 External Data Bus Signals
Tri-stated
Keeper
Reset
Reset
active
DSP56364 Advance Information
Go to: www.freescale.com
Address Bus—A0–A17 are active-high outputs that spec-
ify the address for external program and data memory
accesses. Otherwise, the signals are kept to their previous
values by internal weak keepers. To minimize power dissi-
pation, A0–A17 do not change state when external mem-
ory spaces are not being accessed.
Data Bus—D0–D7 are active-high, bidirectional input/out-
puts that provide the bidirectional data bus for external
program and data memory accesses. D0–D7 are tri-stated
during hardware reset and when the DSP is in the stop or
wait low-power standby mode.
Signal Description
Signal Description
MOTOROLA