Sio (Rs232) Rx Control Procedure - Imi Tech PEARL IMB-20FT User's Operation Manual

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5.8.3.

SIO (RS232) RX Control Procedure

STEP 1 Read RBUF_ST of the Receive Buffer Status Control Register (address : F2F22008h) and
check number of RX data buffered in the camera.
If (RBUF_ST !=0) the RX is Ready else RX is NOT Ready
RBUF_ST : The number of current data buffered in the camera (Unit : byte)
RBUF_CNT : READ : Remaining RX buffer size
STEP 2 Write number of RX data intended to read from RBUF_CNT of the Receive Buffer Status
Control Register (address : F2F22008h)
RBUF_CNT can be configured by unit of byte.
The value of RBUF_CNT must be smaller than RBUF_ST.
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
Bit 16 ~ Bit 23 : 3
Bit 0 : Msb
CF) SIO Setting Example Method
1. F2F2 2000 Read
Set Baud Rate and other values necessary for RS232C communication
2. F2F2 2004 -> 0xC000 0000 Write
-SIO function Enable
-0xC000 0000 Write and Read -> 0xC080 0000 indicating
st
Data
rd Data
Bit 31 : Lsb
nd
Bit 8 ~ Bit 15 : 2 Data
Bit 24 ~ Bit 31 : 4 th Data
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PEARL SERIES Operation Manual