HD6417618 datasheet(472/646 Pages) RENESAS

472 / 646 page

Section 16 Pin Function Controller (PFC)

Rev. 6.00 Jun. 12, 2007 Page 440 of 610

REJ09B0131-0600

16.1.5

Port C IO Register H and L (PCIORH and PCIORL)

PCIORH and PCIORL are 16-bit readable/writable registers that select the input/output directions

of the port C pins. Bits PC20IOR to PC0IOR correspond to pins PC20 to PC00 (the pin name

abbreviations for multiplexed functions are omitted). PCIORH is enabled when a port C pin

functions as a general input/output (PC20 to PC16), otherwise, disabled. PCIORL is enabled when

a port C pin functions as a general input/output (PC15 to PC00), otherwise, disabled.

Setting a bit in PCIORH and PCIORL to 1 makes the corresponding pin function as an output and

clearing a bit in PCIORH and PCIORL to 0 makes the pin function as an input.

Bits 15 to 5 in PCIORH are reserved. These bits are always read as 0. The write value should

always be 0.

The initial values of PCIORH and PCIORL are H'0000.

16.1.6

Port C Control Register H2, L1, and L2 (PCCRH2, PCCRL1, and PCCRL2)

PCCRH2, PCCRL1, and PCCRL2 are 16-bit readable/writable registers that select the pin

functions for the multiplexed port C pins.

• PCCRH2

Bit

Bit Name

Initial

Value

R/W

Description

15 to 9



All 0

Reserved

These bits are always read as 0. The write value should

always be 0.

PC20MD0

R/W

PC20 Mode

Selects the function of pin PC20/WOL.

0: PC20 input/output (port)

1: WOL output (EtherC)



Reserved

This bit is always read as 0. The write value should

always be 0.

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