HD6473032F Datasheet, PDF(178/572 Page) Hitachi Semiconductor – Hitachi Microcomputer

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HD6473032F Datasheet, PDF (178/572 Pages) Hitachi Semiconductor – Hitachi Microcomputer

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7.11.3 Pin Functions

The port B pins are also used for TPC output (TP15 to TP8), ITU input/output (TIOCB4, TIOCB3,

TIOCA4, TIOCA3) and output (TOCXB4, TOCXA4), and ADTRG input. Table 7-18 describes the

selection of pin functions.

Table 7-18 Port B Pin Functions

Pin

PB7/

TP15/

ADTRG

Pin Functions and Selection Method

Bit TRGE in ADCR, bit NDER15 in NDERB and bit PB7DDR in PBDDR select the

pin function as follows

PB7DDR

NDER15

Pin function

0

â

PB7 input

1

0

PB7 output

ADTRG input*

1

1

TP15 output

Notes: * ADTRG input when TRGE = 1.

PB6/

TP14/

Bit NDER14 in NDERB and bit PB6DDR in PBDDR select the pin function as follows

PB6DDR

NDER14

Pin function

0

â

PB6 input

1

0

PB6 output

1

1

TP14 output

PB5/

TP13/

TOCXB4

ITU channel 4 settings (bit CMD1 in TFCR and bit EXB4 in TOER), bit NDER13 in

NDERB, and bit PB5DDR in PBDDR select the pin function as follows

EXB4,

CMD1

PB5DDR

NDER13

Pin function

0

â

PB5 input

Not both 1

1

1

0

1

PB5 output TP13 output

Both 1

â

â

TOCXB4 output

PB4/

TP12/

TOCXA4

ITU channel 4 settings (bit CMD1 in TFCR and bit EXA4 in TOER), bit NDER12 in

NDERB, and bit PB4DDR in PBDDR select the pin function as follows

EXA4,

CMD1

PB4DDR

NDER12

Pin function

0

â

PB4 input

Not both 1

1

1

0

1

PB4 output TP12 output

Both 1

â

â

TOCXA4 output

163

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