
MCP454X/456X/464X/466X
DS22107A-page 42
2008 Microchip Technology Inc.
REGISTER 4-2:
TCON BITS (ADDRESS = 0x04) (1)
R/W-1
GCEN
R1HW
R1A
R1W
R1B
R0HW
R0A
R0W
R0B
bit 8
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 8
GCEN: General Call Enable bit
This bit specifies if I2C General Call commands are accepted
1
=
Enable Device to “Accept” the General Call Address (0000h)
0
=
The General Call Address is disabled
bit 7
R1HW: Resistor 1 Hardware Configuration Control bit
This bit forces Resistor 1 into the “shutdown” configuration of the Hardware pin
1
=
Resistor 1 is NOT forced to the hardware pin “shutdown” configuration
0
=
Resistor 1 is forced to the hardware pin “shutdown” configuration
bit 6
R1A: Resistor 1 Terminal A (P1A pin) Connect Control bit
This bit connects/disconnects the Resistor 1 Terminal A to the Resistor 1 Network
1
=
P1A pin is connected to the Resistor 1 Network
0
=
P1A pin is disconnected from the Resistor 1 Network
bit 5
R1W: Resistor 1 Wiper (P1W pin) Connect Control bit
This bit connects/disconnects the Resistor 1 Wiper to the Resistor 1 Network
1
=
P1W pin is connected to the Resistor 1 Network
0
=
P1W pin is disconnected from the Resistor 1 Network
bit 4
R1B: Resistor 1 Terminal B (P1B pin) Connect Control bit
This bit connects/disconnects the Resistor 1 Terminal B to the Resistor 1 Network
1
=
P1B pin is connected to the Resistor 1 Network
0
=
P1B pin is disconnected from the Resistor 1 Network
bit 3
R0HW: Resistor 0 Hardware Configuration Control bit
This bit forces Resistor 0 into the “shutdown” configuration of the Hardware pin
1
=
Resistor 0 is NOT forced to the hardware pin “shutdown” configuration
0
=
Resistor 0 is forced to the hardware pin “shutdown” configuration
bit 2
R0A: Resistor 0 Terminal A (P0A pin) Connect Control bit
This bit connects/disconnects the Resistor 0 Terminal A to the Resistor 0 Network
1
=
P0A pin is connected to the Resistor 0 Network
0
=
P0A pin is disconnected from the Resistor 0 Network
bit 1
R0W: Resistor 0 Wiper (P0W pin) Connect Control bit
This bit connects/disconnects the Resistor 0 Wiper to the Resistor 0 Network
1
=
P0W pin is connected to the Resistor 0 Network
0
=
P0W pin is disconnected from the Resistor 0 Network
bit 0
R0B: Resistor 0 Terminal B (P0B pin) Connect Control bit
This bit connects/disconnects the Resistor 0 Terminal B to the Resistor 0 Network
1
=
P0B pin is connected to the Resistor 0 Network
0
=
P0B pin is disconnected from the Resistor 0 Network
Note 1:
These bits do not affect the wiper register values.