NAME¶

scapin - Scan path insertion

ORIGIN¶

This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Université Pierre et Marie CURIE, in Paris, France. Web : http://asim.lip6.fr/recherche/alliance/ E-mail : alliance-users@asim.lip6.fr

SYNOPSIS¶

scapin [-VRB] [-P file] Input_name Path_name Output_name

 

DESCRIPTION¶

SCAPIN is an automatic scan path generator for gate level netlists. SCAPIN inserts a scan path in the netlist Input_name and drives a new netlist Output_name. This scan path contains all registers specified in the file Path_name.path (see below for the exact syntax). SCAPIN adds also 3 new connectors in the netlist: scan_in, scan_out and scan_test in order to control the scan path. Eventually SCAPIN adds an output buffer before the output connector scan_out (option -B).

ENVIRONMENT VARIABLES¶

MBK_WORK_LIB(1)

indicates the path to the read/write directory for the session.

 

MBK_IN_LO(1)

indicates the input netlist file format.

 

MBK_OUT_LO(1)

indicates the output netlist file format.

 

SCAPIN_PARAM_NAME

indicates the location of a parameter file (with extention .scapin) containing the properties (ports name, models name etc ...) of all cells needed for the scan path insertion. (see below for the exact syntax)

 

OPTIONS¶

-V

Sets verbose mode on. Each step is displayed on the standard output.

-R

All registers of the scan path are replaced by an equivalent scannable register cell (called reg-mux). (With the default option a simple multiplexor is added just before all registers of the scan path).

-B

Adds an output buffer before the output connector scan_out.

-P file

Specifies a parameter file (with extention .scapin) containing the properties of all cells needed for the scan path insertion. (see below for the exact syntax)

# Example of .scapin file

BEGIN_MUX

MUX_MODEL        mx2_x2
MUX_SEL          cmd
MUX_INPUT_SEL    i1
MUX_INPUT_NSEL   i0
MUX_VDD          vdd
MUX_VSS          vss
MUX_OUTPUT       q

END_MUX


BEGIN_REG

REG_MODEL        sff1_x4
REG_CLK          ck
REG_INPUT        i
REG_VDD          vdd
REG_VSS          vss
REG_OUTPUT       q
REG_MUX          mx2_x2
REG_REG_MUX      sff2_x4

END_REG 
               

BEGIN_REG_MUX

REG_MUX_MODEL        sff2_x4
REG_MUX_SEL          cmd
REG_MUX_INPUT_SEL    i1
REG_MUX_INPUT_NSEL   i0
REG_MUX_CLK          ck
REG_MUX_VDD          vdd
REG_MUX_VSS          vss
REG_MUX_OUTPUT       q
REG_MUX_MUX          mx2_x2
REG_MUX_REG          sff1_x4
 
END_REG_MUX   


BEGIN_BUF

BUF_MODEL            buf_x2
BUF_INPUT            i
BUF_VDD              vdd
BUF_VSS              vss
BUF_OUTPUT           q

END_BUF   
    

Path_name

Specifies a parameter file (with extention .path) containing an ordered list of all instances (registers) of the scan path. It contains also the name of the 3 connectors scan_in, scan_out and scan_test. (see below for the exact syntax)

# Example of .path file

BEGIN_PATH_REG

cs_0
cs_1
cs_2

END_PATH_REG

BEGIN_CONNECTOR

SCAN_IN      scin
SCAN_OUT     scout
SCAN_TEST    test

END_CONNECTOR

    

SEE ALSO¶

MBK_IN_LO(1). MBK_OUT_LO(1). MBK_WORK_LIB(1).

BUG REPORT¶

This tool is under development at the ASIM department of the LIP6 laboratory. We need your feedback to improve documentation and tools.