adsp-2186m Analog Devices, Inc., adsp-2186m Datasheet - Page 8

• Manufacturer Part Number: adsp-2186m
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

Terminating Unused Pins
The following table shows the recommendations for terminating unused pins.
Pin Terminations
Pin Name
XTAL
CLKOUT
A13:1 or
IAD12:0
A0
D23:8
D7 or
IWR
D6 or
IRD
D5 or
IAL
D4 or
IS
D3 or
IACK
D2:0 or
IAD15:13
PMS
DMS
BMS
IOMS
CMS
RD
WR
BR
BG
BGH
IRQ2/PF7
IRQL1/PF6
IRQL0/PF5
IRQE/PF4
SCLK0
RFS0
DR0
TFS0
DT0
SCLK1
RFS1/IRQ0
DR1/FI
TFS1/IRQ1
DT1/FO
EE
EBR
EBG
ERESET
EMS
EINT
ECLK
ELIN
ELOUT
NOTES
1. If the CLKOUT pin is not used, turn it OFF, using CLKODIS in SPORT0 autobuffer control register.
2. If the Interrupt/Programmable Flag pins are not used, there are two options: Option 1: When these pins are configured as INPUTS at reset and function as inter-
3. All bidirectional pins have three-stated outputs. When the pin is configured as an output, the output is Hi-Z (high impedance) when inactive.
4. CLKIN, RESET, and PF3:0/MODE D:A are not included in the table because these pins must be used.
ADSP-2186M
Hi-Z = High Impedance.
rupts and input flag pins, pull the pins High (inactive). Option 2: Program the unused pins as OUTPUTS, set them to 1, prior to enabling interrupts, and let pins float.
I/O 3-State
(Z)
I
O
O (Z)
I/O (Z)
O (Z)
I/O (Z)
I/O (Z)
I
I/O (Z)
I
I/O (Z)
I
I/O (Z)
I
I/O (Z)
I/O (Z)
I/O (Z)
O (Z)
O (Z)
O (Z)
O (Z)
O (Z)
O (Z)
O (Z)
I
O (Z)
O
I/O (Z)
I/O (Z)
I/O (Z)
I/O (Z)
I/O
I/O
I
I/O
O
I/O
I/O
I
I/O
O
I
I
O
I
O
I
I
I
O
Reset
State
I
O
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
I
Hi-Z
I
Hi-Z
I
Hi-Z
I
Hi-Z
Hi-Z
Hi-Z
O
O
O
O
O
O
O
I
O
O
I
I
I
I
I
I
I
I
O
I
I
I
I
O
I
I
O
I
O
I
I
I
O
Hi-Z
Caused By
BR, EBR
IS
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
IS
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
BR, EBR
EE
Unused Configuration
Float
Float
Float
Float
Float
Float
Float
High (Inactive)
Float
High (Inactive)
Float
Low (Inactive)
Float
High (Inactive)
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
High (Inactive)
Float
Float
Input = High (Inactive) or Program as Output, Set to 1, Let Float
Input = High (Inactive) or Program as Output, Set to 1, Let Float
Input = High (Inactive) or Program as Output, Set to 1, Let Float
Input = High (Inactive) or Program as Output, Set to 1, Let Float
Input = High or Low, Output = Float
High or Low
High or Low
High or Low
Float
Input = High or Low, Output = Float
High or Low
High or Low
High or Low
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float