38K2 datasheet(65/358 Pages) RENESAS

65 / 358 page

FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 15, 2006

page 46 of 130

38K2 Group

REJ09B0338-0200

HARDWARE

Fig. 58 Structure of EP02 control register 2

Fig. 59 Structure of EP02 control register 3

Fig. 60 Structure of EP02 interrupt source register

B0VAL02

b7:b1

–

EP02 control register 2 (EP02CON2) [address 001B16]

Bit name

Bit symbol

At reset

Function

H/W

S/W

–: State remaining

Buffer 0 enable bit

Not used

When the selected endpoint is IN, writing “1” to this bit

makes the transmitting data a set state (SIE is possible

to read).

When the selected endpoint is OUT, writing “1” to this

bit makes data reception possible (SIE is possible to

write).

Write “0” when writing.

“0” is read when reading.

B1VAL02

b7:b1

–

EP02 control register 3 (EP02CON3) [address 001C16]

Bit name

Bit symbol

At reset

Function

H/W

S/W

–: State remaining

Buffer 1 enable bit

Not used

When the selected endpoint is IN, writing “1” to this bit

makes the transmitting data a set state (SIE is possible

to read).

When the selected endpoint is OUT, writing “1” to this

bit makes data reception possible (SIE is possible to

write).

In double buffer mode this bit is valid.

Write “0” when writing.

“0” is read when reading.

B0RDY02

B1RDY02

ERR02

b7 to b3

–

EP02 interrupt source register (EP02REQ) [address 001D16]

Bit name

Bit symbol

At reset

Function

H/W

S/W

USB function/Endpoint 2 buffer 0

ready interrupt bit

USB function/Endpoint 2 buffer 1

ready interrupt bit

USB function/Endpoint 2 error

interrupt bit

Not used

0 : No interrupt request issued

1 : Interrupt request issued

This bit is set to “1” when the buffer 0 is ready state

(enabled to be read/written) on USB function/Endpoint 2.

“0” can be set by software, but “1” cannot be set.

0 : No interrupt request issued

1 : Interrupt request issued

In single buffer mode this bit is invalid.

This bit is set to “1” when the buffer 1 is ready state

(enabled to be read/written) on USB function/Endpoint 2

in double buffer mode.

“0” can be set by software, but “1” cannot be set.

0 : No interrupt request issued

1 : Interrupt request issued

This bit is set to “1” when STALL response occurs on

USB function/Endpoint 2.

“0” can be set by software, but “1” cannot be set.

Write “0” when writing.

“0” is read when reading.

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