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ST75C540 Datasheet(PDF) 34 Page - STMicroelectronics

Part # ST75C540
Description  SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES
PDF  84 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST75C540 Datasheet(HTML) 34 Page - STMicroelectronics

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IDT
Identify
IDT
Opcode:
14
000
10100
Synopsis
IDT ReturntheST75C530/540HardwareandSoftwarereleasenumber.SeeparagraphVIII.1.4.
Parameter
Non parametric command.
INIT
Initialization
INIT
Opcode:
06
000
00110
Synopsis
INIT forces the ST75C530/540 to reset all parameters to their default conditions and restart
operations.
Parameter
Non parametric command.
Note :
This command makes a software reset of the ST75C530/540 and so cannot have the regular handshake protocol. It
does not increment the COMACK, neither generate an Interrupt.
JSR
Call a Low Level Subroutine
JSR
Opcode:
18
000
11000
Synopsis
JSR allows to execute a part of the ST75C530/540 firmware with a specific argument.
Parameters
Field
Byte
Pos.
Value
Definition
C_ADDR_L
1
7..0
Low byte of the call address
C_ADDR_H
2
7..0
High byte of the call address
C_DATA_L
3
7..0
Low byte of the argument
C_DATA_H
4
7..0
High byte of the argument
This instruction can be used with SGS-THOMSON Microelectronics Application Laboratory Support for
special applications development or debugging needs. Contact your local representative.
VII - COMMAND SET DESCRIPTION (continued)
ST75C530 - ST75C540
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