82P2821BH IDT, Integrated Device Technology Inc, 82P2821BH Datasheet - Page 81

• Manufacturer Part Number: 82P2821BH
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82P2821BH

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Not Compliant

GPIO - General Purpose I/O Pin Definition Register
Address: 100H
Type: Read / Write
Default Value: 0FH
Programming Information
IDT82P2821
7 - 4
Bit
3
2
1
0
7
-
LEVEL1
LEVEL0
Name
DIR1
DIR0
-
6
-
Reserved.
When the GPIO1 pin is defined as output, this bit determines the output level on GPIO1 and can be read and written.
0: Output low level.
1: Output high level. (default)
When the GPIO1 pin is defined as input, this bit indicates the input level on GPIO1 and can only be read.
0: Input low level.
1: Input high level. (default)
When the GPIO0 pin is defined as output, this bit determines the output level on GPIO0 and can be read and written.
0: Output low level.
1: Output high level.
When the GPIO0 pin is defined as input, this bit indicates the input level on GPIO0 and can only be read.
0: Input low level.
1: Input high level. (default)
This bit determines whether the GPIO1 pin is used as output or input.
0: Output.
1: Input. (default)
This bit determines whether the GPIO0 pin is used as output or input.
0: Output.
1: Input. (default)
5
-
4
-
21(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
81
LEVEL1
3
Description
LEVEL0
2
DIR1
1
February 6, 2009
DIR0
0