Unibrain 630 Manuale Utente

Unibrain Fire-i 530/630/830 Operation Manual

Page 48

STEP 3 Read RS232 RX data from SIO_Data_Register (addr. : F2F22100 )

STEP 4 If data is further required repeat from STEP1

Note that 1394 data consist of 32 bit data the data read should

Bit 0 ~ Bit 7 : 1

Data

Bit 8 ~ Bit 15 : 2

Data

Bit 16 ~ Bit 23 : 3

Data

Bit 24 ~ Bit 31 : 4

Data

Bit 0 : Msb Bit 31 : Lsb

SIO (RS232) TX Control Procedure Method I

STEP 1 Check TX buffer size by reading TBUF_ST of the Transmit_Buffer_Status_Control

register(Addr. : F2F220Ch)

If ((TBUF_ST == Buffer_Size_Inq) or (TBUF_TDRD ==1)) then TX is COMPLETE else TX is INCOMPLETE

TBUF_ST : Current TX Data buffer(Unit:byte) of the camera

TBUF_CNT : Read : Number of data transmitted by RS232 TX

Buffer_Size_Inq : Defined in Serial_Mode_Reg( Addr. : F2F22000h)

Ex) 20050000h : valid data buffer size = 20 number of data sent : 05

STEP 2 Write number of RS232 TX data to be set for TBUF_CNT at SIO_Data_Register(Addr:

F2F22100h)

STEP 3 Write number of TX data to be transferred to TBUF_CNT of Transmit_Buffer_Status_Control

Register(Addr:F2F2200Ch)

TBUF_CNT can be configured by unit of byte.

The value of TBUF_CNT must be smaller than data written at SIO_Data_Register.

If (write data number > = TBUF_CNT)

{

RS232TX Start

Write Data number larger that TBUF_CNT is discarded.

For example if TBUF_CNT = 5 , in IEEE-1394 write is done by a unit of 4 bytes where 8 bytes shall be

written at SIO_Data_Register but only 5 bytes are transmitted and the 3 bytes remaining shall be

discarded.

}

STEP4 If there is data to be transmitted repeat from Step 1 .

Bit 0 ~ Bit 7: 1

Data

Bit 8 ~ Bit 15: 2

Data

Bit 16 ~ Bit 23: 3

Data

Bit 24 ~ Bit 31: 4

Data

Bit 0 : Msb Bit 31 : Lsb