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IDT88P8342 SPI EXCHANGE 2 x SPI-3 TO SPI-4
INDUSTRIALTEMPERATURERANGE
APRIL 10, 2006
TABLE33-SPI-4DATAINSERTCONTROLREGISTER
(REGISTERS 0x02 and 0x0A)
Field
Bits
Length
Initial Value
DATA_AVAILABLE
0
1
0b0
Reserved
7:1
7
0x00
TABLE 34 - SPI-4 DATA INSERT REGISTER
(REGISTERS 0x03 and 0x0B)
Field
Bits
Length
Initial Value
DATA
7:0
8
0x00
SPI-4 data insert control register
A SPI-4 data insert control register has read and write access in the direct
register access space. The microprocessor uses these registers to insert data
into a SPI-3 ingress.
The SPI-4 data insert control register for SPI-3 port A is register 0x02.
The SPI-4 data insert control register for SPI-3 port B is register 0x0A.
The bit field of the SPI-4 data insert control register is described.
DATA_AVAILABLE The SPI-4 insert data buffer is empty and ready for
writing.
SPI-4 data insert register
ASPI-4datainsertregisterhaswrite-onlyaccessinthedirectregisteraccess
space. The microprocessor uses these registers to insert data into a SPI-3
ingress.
The SPI-4 Data Insert Register for SPI-3 port A is register 0x03.
The SPI-4 Data Insert Register for SPI-3 port B is register 0x0B.
The bit field of the SPI-4 Data Insert Register is described.
DATA The SPI-4 insert data buffer is written to this field.
SPI-4 data capture control register
TABLE 37 - SPI-4 DATA CAPTURE REGISTER
(REGISTERS 0x06 and 0x0E)
Field
Bits
Length
Initial Value
DATA
7:0
8
0x00
TABLE 38 - SPI-3 DATA INSERT REGISTER (REGIS-
TERS 0x07 and 0x0F)
Field
Bits
Length
Initial Value
DATA
7:0
8
0x00
TABLE36-SPI-3DATAINSERTCONTROLREGISTER
(REGISTERS 0x05 and 0x0D)
Field
Bits
Length
Initial Value
DATA_AVAILABLE
0
1
0b0
Reserved
7:1
7
0x00
TABLE 35 - SPI-4 DATA CAPTURE CONTROL
REGISTERS (REGISTERS 0x04 and 0x0C)
Field
Bits
Length
Initial Value
DATA_AVAILABLE
0
1
0b0
Reserved
7:1
7
0x00
ASPI-4DataCaptureControlRegisterhasreadandwriteaccessinthedirect
registeraccessspace.Themicroprocessorusestheseregisterstocapturedata
from a SPI-3 ingress.
The SPI-4 Data Capture Control Register for SPI-3 port A is register 0x04.
The SPI-4 Data Capture Control Register for SPI-3 port B is register 0x0C.
The bit field of the SPI-4 Data Capture Control Register is described.
DATA_AVAILABLE The SPI-4 capture data buffer is full and ready for
reading.
SPI-3 data insert control register
A SPI-3 data insert control register has read and write access in the direct
register access space. The microprocessor uses these registers to insert data
into a SPI-4 ingress.
The SPI-3 Data Insert Control Register for SPI-3 port A is register 0x05.
The SPI-3 Data Insert Control Register for SPI-3 port B is register 0x0D.
The bit field of the SPI-3 Data Insert Control Register is described.
DATA_AVAILABLE TheSPI-3insertdatabufferisemptyandavailablefor
writing.
SPI-4 data capture register
A SPI-4 data capture register has read-only access in the direct register
access space. The microprocessor uses these registers to capture data from
a SPI-4 ingress.
The SPI-4 Data Capture Register for SPI-3 port A is register 0x06
The SPI-4 Data Capture Register for SPI-3 port B is register 0x0E.
The bit field of the SPI-4 Data Capture Register is described.
DATA The SPI-4 capture data buffer is read from this field.
SPI-3 data insert register
A SPI-3 Data Insert Register has write-only access in the direct register
accessspace. ThemicroprocessorusestheseregisterstoinsertdataintoaSPI-
4 ingress.
The SPI-3 Data Insert Register for SPI-3 port A is register 0x07.
The SPI-3 Data Insert Register for SPI-3 port B is register 0x0F.
The bit field of the SPI-3 Data Capture Register is described.
DATA The SPI-3 insert data buffer is written from this field.