adsp-bf539bbcz-5f8 Analog Devices, Inc., adsp-bf539bbcz-5f8 Datasheet - Page 21

• Manufacturer Part Number: adsp-bf539bbcz-5f8
• Description: Blackfin Embedded Processor
• Manufacturer: Analog Devices, Inc.

PIN DESCRIPTIONS
ADSP-BF539/ADSP-BF539F processor pin definitions are listed
in
All pins are three-stated during and immediately after reset,
except the memory interface, asynchronous memory control,
and synchronous memory control pins, which are driven high.
If BR is active, then the memory pins are also three-stated. All
unused I/O pins have their input buffers disabled with the
Table 10. Pin Descriptions
Pin Name
Memory Interface
Asynchronous Memory Control
Flash Control
Synchronous Memory Control
Timers
Table
ADDR19–1
DATA15–0
ABE1–0/SDQM1–0
BR
BG
BGH
AMS3–0
ARDY
AOE
ARE
AWE
FCE
FRESET
SRAS
SCAS
SWE
SCKE
CLKOUT
SA10
SMS
TMR0
TMR1/PPI_FS1
TMR2/PPI_FS2
10.
Type Description
O
I/O
O
I
O
O
O
I
O
O
O
I
I
O
O
O
O
O
O
O
I/O
I/O
I/O
Address Bus for Async/Sync Access
Data Bus for Async/Sync Access
Byte Enables/Data Masks for Async/Sync Access
Bus Request. (This pin should be pulled high when not used.)
Bus Grant
Bus Grant Hang
Bank Select
Hardware Ready Control (This pin should always be pulled low when not used.)
Output Enable
Read Enable
Write Enable
Flash Enable (This pin should be left unconnected or pulled low for the
ADSP-BF539.)
Flash Reset (This pin should be left unconnected or pulled low for the
ADSP-BF539.)
Row Address Strobe
Column Address Strobe
Write Enable
Clock Enable
Clock Output
A10 Pin
Bank Select
Timer 0
Timer 1/PPI Frame Sync1
Timer 2/PPI Frame Sync2
Rev. A | Page 21 of 60 | February 2008
exception of the pins that need pull-ups or pull-downs, as noted
in the table.
In order to maintain maximum functionality and reduce pack-
age size and pin count, some pins have dual, multiplexed
functionality. In cases where pin functionality is reconfigurable,
the default state is shown in plain text, while alternate function-
ality is shown in italics.
ADSP-BF539/ADSP-BF539F
Driver
Type
A
A
A
A
A
A
A
A
A
A
A
A
A
B
A
A
C
C
C
1