7643 datasheet(374/424 Pages) RENESAS

374 / 424 page

7643 Group

REJ09B0133-0200

APPENDIX

3.5 Control registers

Rev.2.00

Aug 28, 2006

page 51 of 98

Port P2 pull-up control register

b7 b6 b5 b4 b3 b2 b1 b0

Port P2 pull-upt control register

(PUP2 : address 1216)

Name

Functions

At reset R W

0 : Disabled

1 : Enabled

0 : Disabled

1 : Enabled

0 : Disabled

1 : Enabled

0 : Disabled

1 : Enabled

0 : Disabled

1 : Enabled

0 : Disabled

1 : Enabled

Port P26 pull-up control bit

0 : Disabled

1 : Enabled

Port P27 pull-up control bit

0 : Disabled

1 : Enabled

Port P20 pull-up control bit

Port P21 pull-up control bit

Port P22 pull-up control bit

Port P23 pull-up control bit

Port P24 pull-up control bit

Port P25 pull-up control bit

USB control register

b7 b6 b5 b4 b3 b2 b1 b0

USB control register

(USBC : address 1316)

Name

Functions

At reset R W

USB line driver current

control bit (USBC3)

USB line driver supply

enable bit (USBC4) (Note 2)

0 : In default state after power-on/reset

1 : In default state after USB reset signal

received (Note 1)

0 : High current mode

1 : Low current mode

0 : Line driver disabled

1 : Line driver enabled

0 : 48 MHz clock to the USB block disabled

1 : 48 MHz clock to the USB block enabled

USB enable bit (USBC7)

0 : USB block disabled (Note 3)

1 : USB block enabled

USB default state selection

bit (USBC1)

USB clock enable bit

(USBC5)

Notes 1: Without regard to this bit, USB internal registers (address 005016 to 005F16) go

into the states at reset (default) at the same time when USB reset is detected.

2: When using the MCU in Vcc = 3.3 V, set this bit to “0” and disable the built-in DC-

DC converter.

3: Setting this bit to 0” causes the contents of all USB registers to have the values at

reset.

Nothing is arranged for this bit.

Fix this bit to “0”.

Nothing is arranged for this bit.

Fix this bit to “0”.

Nothing is arranged for this bit.

Fix this bit to “0”.

Fig. 3.5.15 Structure of Port P2 pull-up control register

Fig. 3.5.16 Structure of USB control register

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