Renesas PROM Programming Adapter PCA7435FPG02 Dokumentacja Pobierz pdf (Strona 24)

7534 Group

Rev.3.00 Oct 23, 2006 page 24 of 53

REJ03B0099-0300

Fig. 27 Structure of serial I/O1-related registers (1)

b7 b0

USB status register

(USBSTS: address 0019

)

Transmit buffer empty flag

0: Buffer full

1: Buffer empty

EOP detection flag

0: Not detected

1: Detect

False EOP error flag

0: No error

1: False EOP error

CRC error flag

0: No error

1: CRC error

PID error flag

0: No error

1: PID error

Bit stuffing error flag

0: No error

1: Bit stuffing error

Summing error flag

0: No error

1: Summing error

Receive buffer full flag

0: Buffer empty

1: Buffer full

b7 b0

Transmit buffer register

(TB: address 0018

)

After setting data to address 0018

, a content of the

transmit buffer register transfers to the transmit shift

CPU read: Disabled

CPU write: Set/Clear

Hardware read: Used

Hardware write: Not used

Receive buffer register

(RB: address 0018

)

By reading data from address 0018

, a content of the

receive buffer register can be read out.

CPU read: Enabled

CPU write: Disabled

Hardware read: Not used

Hardware write: Set/Clear

CPU read: Enabled

CPU write: Disabled

Hardware read: Not used

Hardware write: Set/Clear

CPU read: Enabled

CPU write: Clear

Hardware read: Not used

Hardware write: Set

CPU read: Enabled

CPU write: Disabled

Hardware read: Not used

Hardware write: Set/Clear

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