7643 datasheet(280/424 Pages) RENESAS

280 / 424 page

Rev.2.00

Aug 28, 2006

page 159 of 202

7643 Group

REJ09B0133-0200

APPLICATION

2.6 USB

Initialization

CCR (Address 1F16)

FSM1 (Address 6D16)

FSM2 (Address 6E16)

FSD (Address 6F16)

FSC (Address 6C16)

USBC (Address 1316)

USBFIFOMR (Address 5F16)

USBIE1 (Address 5416)

USBINDEX (Address 5816)

IN_MAXP (Address 5B16)

IN_CSR (Address 5916)

UBRG (Address 3116)

UMOD (Address 3016)

UCON (Address 3316)

P4 (Address 1816)

P4D (Address 1916)

ICONA (Address 0516)

ICONB (Address 0616)

IREQA (Address 0216)

IREQB (Address 0316)

.....

8016

0016

FF16

0016

4116

1X1100X02

XXXXXX002

000001012

X00000012

0816

0XXXXXX02

4D16

010X00002

0100X0102

XXXXXX1X2

XXXXXX102

X1XXXXX12

XXXXXXX12

0016

RESET

* Refer to the USB initial setting.

•

USB initial setting

(Interrupt disabled)

Endpoint1FIFO: IN128 bytes

Endpoint0, Endpoint1IN interrupts enabled

Max. packet size: 64 bytes

...

• UART initial setting

CTS function disabled, RTS function enabled,

φ as UART clock, 1 stop bit,

Parity checking disabled, 8-bit character length

receive enabled

• Others

P40: input, P41: output

USB function interrupt: enabled

UART receive buffer full interrupt: enabled

UART summing error interrupt: enabled

..... (Interrupt enabled)

USBIS1 (Address 5216),bit2

UCON (Address 3316),bit1

* In the initial setting, set the first UART receive to be enabled.

• Start processing

UART receive enabled

USB Endpoint 1 IN interrupt

RTI

Pop registers

Push registers to stack

Interrupt occurs

q x: This bit is not used here. Set it to “0” or “1” arbitrary.

Fig. 2.6.54 Control procedure (1)

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