38K2 datasheet(49/151 Pages) RENESAS

49 / 151 page

38K2 Group

Rev.3.00

Oct 15, 2006

page 49 of 147

REJ03B0193-0300

Fig. 67 Structure of EP03 control register 2

Fig. 68 Structure of EP03 control register 3

Fig. 69 Structure of EP03 interrupt source register

B0VAL03

b7:b1

–

EP03 control register 2 (EP03CON2) [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.

B1VAL03

b7:b1

–

EP03 control register 3 (EP03CON3) [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.

0000

000

B0RDY03

B1RDY03

ERR03

b7:b3

–

EP03 interrupt source register (EP03REQ) [address 001D16]

Bit name

Bit symbol

At reset

Function

H/W

S/W

USB function/Endpoint 3 buffer 0

ready interrupt bit

USB function/Endpoint 3 buffer 1

ready interrupt bit

USB function/Endpoint 3 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 3.

“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 3

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 3.

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

Write “0” when writing.

“0” is read when reading.

0000

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