HD64F2149YV datasheet(260/1075 Pages) RENESAS

260 / 1075 page

Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 232 of 1044

REJ09B0280-0300

System Control Register 2 (SYSCR2)

Bit

543210

KWUL1

KWUL0

P6PUE

—

SDE

CS4E

CS3E

HI12E

Initial value

000000

Read/Write

R/W

—

R/W

SYSCR2 is an 8-bit readable/writable register that controls port 6 input level selection and the

operation of host interface functions.

Only bits 7 to 5 are described here. See section 18A.2.2, System Control Register 2 (SYSCR2), for

information on bits 4 to 0.

SYSCR2 is initialized to H'00 by a reset and in hardware standby mode.

Bits 7 and 6—Key Wakeup Level 1 and 0 (KWUL1, KWUL0): The port 6 input level setting

can be changed by software, using these bits. The setting of these bits also changes the input level

of the pin functions multiplexed with port 6.

Bit 7

Bit 6

KWUL1

KWUL0

Description

Standard input level is selected as port 6 input level

(Initial value)

Input level 1 is selected as port 6 input level

Input level 2 is selected as port 6 input level

Input level 3 is selected as port 6 input level

Bit 5—Port 6 Input Pull-Up Extra (P6PUE): Controls and selects the current specification for

the port 6 MOS input pull-up function connected by means of KMPCR settings.

Bit 5

P6PUE

Description

Standard current specification is selected for port 6 MOS input pull-up function

(Initial value)

Current-limit specification is selected for port 6 MOS input pull-up function

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