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ST75C520PQFP Folha de dados(PDF) 20 Page - STMicroelectronics

Nome de Peças ST75C520PQFP
Descrição Electrónicos  HIGH SPEED FAX MODEM DATA PUMP
PDF  45 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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ST75C520PQFP Folha de dados(HTML) 20 Page - STMicroelectronics

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CR
Complex Read
CR
Opcode:
11
00010001
Synopsis
CR allows the reading of a complex parameter. The parameter specifies the parameter
address (for the real part : the imaginary part is next location). CR returns the high byte
value of both real and imaginary part of the addressed complex parameter.
Parameters
Field
Byte
Pos.
Value
Definition
CR_ADDR_L
1
7..0
Low byte of the 16-bit address
CR_ADDR_H
2
7..0
High byte of the 16-bit address
CSE
Clear Error Status
CSE
Opcode:
08
00001000
Synopsis
CSE is used to clear the ST75C520 error status SYSERR byte. It is also used as an
acknowledge to the error condition handler. For details, please refer to the corresponding
appendix.
Parameters
Field
Byte
Pos.
Value
Definition
ERR_MASK
1
7..0
Error mask
See report appendix for detailed meaning
DEFT
Define Arbitrary Tone
DEFT
Opcode:
0E
00001110
Synopsis
DEFT programs one of the four tone generator for arbitrary tone generation. The parameter
is the frequency of the generated tone expressed in Hertz between 0 and 3600Hz.
Parameters
Field
Byte
Pos.
Value
Definition
TONE_GEN_SL
1
1..0
Index of the tone generator (3..0)
TONE_FREQ_L
2
7..0
Low byte of the frequency
TONE_FREQ_H
3
7..0
High byte of the frequency
(internally masked with 0F)
TONE_SCALE
4
7..0
Amplitude scaling factor (high byte)
3F gives the nominal amplitude
DOSR
Define Optional Status Report
DOSR
Opcode:
0A
00001010
Synopsis
DOSR specifies the address of the RAM variables to be monitored in the 3 locations
STAOPT[0..2] of the dual port RAM. It also specifies the assignment within the 3 locations.
Parameters
Field
Byte
Pos.
Value
Definition
STA_OPT_ASS
1
1..0
0..2
Index of the STAOPT destination
STA_OPT_ADL
2
7..0
Low byte of source address
STA_OPT_ADH
3
3..0
High byte of source address
STA_OPT_HL
3
7
0
1
Select low byte of source
Select high byte of source
ST75C520
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