ad73460 Analog Devices, Inc., ad73460 Datasheet - Page 22

• Manufacturer Part Number: ad73460
• Description: Six-input Channel Analog Front End
• Manufacturer: Analog Devices, Inc.

AD73460
Full Memory Mode Pins (Mode C = 0)
Pin
Name(s) Pins Output Function
A13:0
D23:0
Host Mode Pins (Mode C = 1)
Pin
Name(s) Pins Output Function
IAD15:0 16
A0
D23:8
IWR
IRD
IAL
IS
IACK
In Host Mode, external peripheral addresses can be decoded using the A0, CMS,
PMS, DMS, and IOMS signals
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
# of
14
24
# of
1
16
1
1
1
1
1
I/O
Three-
State (Z) State
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)
Input/
O
I/O
Input/
I/O
O
I/O
I
I
I
I
O
Reset
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
Address Output Pins for Program,
Data, Byte, and I/O Spaces
Data I/O Pins for Program, Data,
Byte, and I/O Spaces (8 MSBs are
also used as Byte Memory addresses)
IDMA Port Address/Databus
Address Pin for External I/O, Pro-
gram, Data, or Byte access
Data I/O Pins for Program, Data
Byte, and I/O spaces
IDMA Write Enable
IDMA Read Enable
IDMA Address Latch Pin
IDMA Select
IDMA Port Acknowledge Configur-
able in Mode D; Open Source
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
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
–22–
Pin Terminations (continued)
Pin
Name
WR
BR
BG
BGH
IRQ2/PF7
IRQL1/PF6
IRQL0/PF5
IRQE/PF4
SCLK0
RFS0
DR0
TFS0
DT0
SCLK1
RFS1/IRQ0 I/O
DR1/FL1
TFS1/IRQ1 I/O
DT1/FO
EE
EBR
EBG
ERESET
EMS
EINT
ECLK
ELIN
ELOUT
NOTES
*Hi-Z = High Impedance.
1. If the CLKOUT pin is not used, turn it OFF.
2. If the Interrupt/Programmable Flag pins are not used, there are two options:
3. All bidirectional pins have three-stated outputs. When the pin is configured as
4. CLKIN, RESET, and PF3:0 are not included in the table because these pins
Option 1: When these pins are configured as INPUTS at reset and function as
interrupts and input flag pins, pull the pins High (inactive).
Option 2: Program the unused pins as OUTPUTS, set them to 1, and let
them float.
an output, the output is Hi-Z (high impedance) when inactive.
must be used.
I/O
Three-
State (Z) State
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
I
O
I
I
I
O
Reset
O
I
O
O
I
I
I
I
I
I
I
O
O
I
I
I
O
O
I
I
O
I
O
I
I
I
O
Hi-Z*
Caused
By
BR, EBR
EE
Unused
Configuration
Input = High or Low,
High or Low
High or Low
High or Low
Float
Input = High or Low,
High or Low
High or Low
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
Output = Float
Output = Float
High or Low
REV. A