ATAM862 datasheet(41/110 Pages) ATMEL

41 / 110 page

4554E–4BMCU–05/06

ATAM862-3

Table 22-3.

Port 4 Control Register

22.5

Bi-directional Port 6

The bi-directional Port 6 is a bitwise configurable I/O port and provides the external pins for the

Timer 3. As a normal port, it performs in exactly the same way as bi-directional Port 6 (see Fig-

ure 22-5 on page 40). Two additional multiplexes allow data and port direction control to be

passed over to other internal module (Timer 3). The I/O pin for T3I line has an additional mode to

generate a Timer 3 interrupt.

All two Port 6 pins can be individually switched by the P6CR register. Figure 22-5 on page 40

shows the internal interfaces to bi-directional Port 6.

22.5.1

Port 6 Data Register (P6DAT)

Primary register address: "6"hex

22.5.2

Port 6 Control Register (P6CR)

Auxiliary register address: "6"hex

P6xM2, P6xM1 – Port 6x Interrupt mode/direction code

Auxiliary Address: "4"hex

First Write Cycle

Second Write Cycle

Code

3 2 1 0

Function

Code

3 2 1 0

Function

x x 1 1

BP40 in input mode

x x 1 1

BP42 in input mode

x x 1 0

BP40 in output mode

x x 1 0

BP42 in output mode

x x 0 1

BP40 enable alternate function

(SC for SSI)

x x 0 x

BP42 enable alternate function

(T2O for Timer 2)

x x 0 0

BP40 enable alternate function

(falling edge interrupt input for INT3)

1 1 x x

BP43 in input mode

1 1 x x

BP41 in input mode

1 0 x x

BP43 in output mode

1 0 x x

BP41 in output mode

0 1 x x

BP43 enable alternate function

(SD for SSI)

0 1 x x

BP41 enable alternate function (VMI

for voltage monitor input)

0 0 x x

BP43 enable alternate function (falling

edge interrupt input for INT3)

0 0 x x

BP41 enable alternate function (T2I

external clock input for Timer 2)

––

Bit 3Bit 2Bit 1Bit 0

P6DAT3

- - -

P6DAT0

Reset value: 1xx1b

Bit 3Bit 2Bit 1Bit 0

P63M2

P63M1

P60M2

P60M0

Reset value: 1111b

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