M38K09RFS datasheet(58/328 Pages) RENESAS

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FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 05, 2006

page 41 of 112

38K0 Group

REJ09B0337-0200

HARDWARE

Fig. 49 Structure of EP01 control register 3

Fig. 50 Structure of EP01 interrupt source register

B0VAL01

b7:b1

–

EP01 control register 2 (EP01CON2) [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.

Fig. 48 Structure of EP01 control register 2

B1VAL01

b7:b1

–

EP01 control register 3 (EP01CON3) [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

B0RDY01

B1RDY01

ERR01

b7:b3

–

EP01 interrupt source register (EP01REQ) [address 001D16]

Bit name

Bit symbol

At reset

Function

H/W

S/W

USB function/Endpoint 1 buffer 0

ready interrupt bit

USB function/Endpoint 1 buffer 1

ready interrupt bit

USB function/Endpoint 1 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 1.

“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 1

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 1.

“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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