５．２ １９９４年版　Ｓｔａｎｄａｒｄ　ＶＨＤＬ　Ｐａｃｋａｇｅ

１９９４年版　Ｓｔａｎｄａｒｄ　ＶＨＤＬ　Ｐａｃｋａｇｅ　を以下に示します。

package STD_1149_1_1994 is

-- Give component conformance declaration

attribute COMPONENT_CONFORMANCE : string;

-- Give pin mapping declarations

attribute PIN_MAP : string;

subtype PIN_MAP_STRING is string;

-- Give TAP control declarations

type CLOCK_LEVEL is (LOW, BOTH);

type CLOCK_INFO is record

FREQ              : real;

LEVEL              : CLOCK_LEVEL;

end record;

attribute TAP_SCAN_IN                            : boolean;

attribute TAP_SCAN_OUT              : boolean;

attribute TAP_SCAN_CLOCK          : CLOCK_INFO;

attribute TAP_SCAN_MODE            : boolean;

attribute TAP_SCAN_RESET            : boolean;

-- Give instruction register declarations

attribute INSTRUCTION_LENGTH                        : integer;

attribute INSTRUCTION_OPCODE                        : string;

attribute INSTRUCTION_CAPTURE                        : string;

attribute INSTRUCTION_PRIVATE                        : string;

-- Give ID and USER code declarations

type ID_BITS is ('0', '1', 'x', 'X');

type ID_STRING is array (31 downto 0) of ID_BITS;

attribute IDCODE_REGISTER          : ID_STRING;

attribute USERCODE_REGISTER      : ID_STRING;

-- Give register declarations

attribute REGISTER_ACCESS : String;

-- Give boundary cell declarations

type BSCAN_INST is (EXTEST, SAMPLE, INTEST);

type CELL_TYPE is (INPUT, INTERNAL, CLOCK, OBSERVE_ONLY,CONTROL,

CONTROLR, OUTPUT2,OUTPUT3, BIDIR_IN, BIDIR_OUT);

type CAP_DATA is (PI, PO, UPD, CAP, X, ZERO, ONE);

type CELL_DATA is record

CT              : CELL_TYPE;

I              : BSCAN_INST;

CD              : CAP_DATA;

end record;

type CELL_INFO is array (positive range <>) of CELL_DATA;

-- Boundary cell deferred constants (see package body)

constant BC_0 : CELL_INFO;

constant BC_1 : CELL_INFO;

constant BC_2 : CELL_INFO;

constant BC_3 : CELL_INFO;

constant BC_4 : CELL_INFO;

constant BC_5 : CELL_INFO;

constant BC_6 : CELL_INFO;

constant BC_7 : CELL_INFO;

-- Boundary register declarations

attribute BOUNDARY_LENGTH        : integer;

attribute BOUNDARY_REGISTER      : string;

-- Miscellaneous

attribute PORT_GROUPING            : string;

attribute RUNBIST_EXECUTION       : string;

attribute INTEST_EXECUTION          : string;

subtype BSDL_EXTENSION is string;

attribute COMPLIANCE_PATTERNS : string;

attribute DESIGN_WARNING : string;

end STD_1149_l_1994; -- End of 1149.1-1994 Package

package body STD_1149_1_1994 is -- Standard boundary cells

-- Generic cell capturing minimum allowed data

constant BC_0 : CELL_INFO :=

( (INPUT, EXTEST, PI)              , (OUTPUT2, EXTEST, X),

(INPUT, SAMPLE, PI)              , (OUTPUT2, SAMPLE, PI),

(INPUT, INTEST, X)                            , (OUTPUT2, INTEST, PI),

(OUTPUT3, EXTEST, X)           , (INTERNAL, EXTEST, X),

(OUTPUT3, SAMPLE, PI)          , (INTERNAL, SAMPLE, X),

(OUTPUT3, INTEST, PI)          , (INTERNAL, INTEST, X),

(CONTROL, EXTEST, X)           , (CONTROLR, EXTEST, X),

(CONTROL, SAMPLE, PI)          , (CONTROLR, SAMPLE, PI),

(CONTROL, INTEST, PI)          , (CONTROLR, INTEST, PI),

(BIDIR_IN, EXTEST, PI)              , (BIDIR_OUT, EXTEST, X),

(BIDIR_IN, SAMPLE, PI)          , (BIDIR_OUT, SAMPLE, PI),

(BIDIR_IN, INTEST, X)              , (BIDIR_OUT, INTEST, PI),

(OBSERVE_ONLY, SAMPLE, PI), (OBSERVE_ONLY, EXTEST, PI) );

-- Description for f10-18, f10-29, f10-31c, f10-31d, f10-33c, f10-41d

constant BC_1 : CELL_INFO :=

( (INPUT, EXTEST, PI)              , (OUTPUT2, EXTEST, PI),

(INPUT, SAMPLE, PI)              , (OUTPUT2, SAMPLE, PI),

(INPUT, INTEST, PI)                            , (OUTPUT2, INTEST, PI),

(OUTPUT3, EXTEST, PI)          , (INTERNAL, EXTEST, PI),

(OUTPUT3, SAMPLE, PI)          , (INTERNAL, SAMPLE, PI),

(OUTPUT3, INTEST, PI)          , (INTERNAL, INTEST, PI),

(CONTROL, EXTEST, PI)          , (CONTROLR, EXTEST, PI),

(CONTROL, SAMPLE, PI)          , (CONTROLR, SAMPLE, PI),

(CONTROL, INTEST, PI)          , (CONTROLR, INTEST, PI) );

-- Description for f10-14, f10-30, f10-32c, f10-32d, f10-35c

constant BC_2 : CELL_INFO :=

( (INPUT, EXTEST, PI)              , (OUTPUT2, EXTEST, UPD),

(INPUT, SAMPLE, PI)              , (OUTPUT2, SAMPLE, PI),

(INPUT, INTEST, UPD)       , -- Intest on output2 not supported

(OUTPUT3, EXTEST, UPD)       , (INTERNAL, EXTEST, PI),

(OUTPUT3, SAMPLE, PI)          , (INTERNAL, SAMPLE, PI),

(OUTPUT3, INTEST, PI)          , (INTERNAL, INTEST, UPD),

(CONTROL, EXTEST, UPD)       , (CONTROLR, EXTEST, UPD),

(CONTROL, SAMPLE, PI)          , (CONTROLR, SAMPLE, PI),

(CONTROL, INTEST, PI)          , (CONTROLR, INTEST, PI) );

-- Description for f10-15

constant BC_3 : CELL_INFO :=

( (INPUT, EXTEST, PI)              , (INTERNAL, EXTEST, PI),

(INPUT, SAMPLE, PI)              , (INTERNAL, SAMPLE, PI),

(INPUT, INTEST, PI)                            , (INTERNAL, INTEST, PI) );

-- Description for f10-16, f10-17

constant BC_4 : CELL_INFO :=

( (INPUT, EXTEST, PI), -- Intest on input not supported

(INPUT, SAMPLE, PI),

(OBSERVE_ONLY, EXTEST, PI),

(OBSERVE_ONLY, SAMPLE, PI),

-- Intest on observe_only not supported

(CLOCK, EXTEST, PI)          , (INTERNAL, EXTEST, PI),

(CLOCK, SAMPLE, PI)          , (INTERNAL, SAMPLE, PI),

(CLOCK, INTEST, PI)              , (INTERNAL, INTEST, PI) );

-- Description for f10-41c, a combined input/control

constant BC_5 : CELL_INFO :=

( (INPUT, EXTEST, PI)              , (CONTROL, EXTEST, PI),

(INPUT, SAMPLE, PI)              , (CONTROL, SAMPLE, PI),

(INPUT, INTEST, UPD)       , (CONTROL, INTEST, UPD) );

-- Description for f10-35d, a reversible cell

-- !! Not recommended; replaced by BC_7 below !!

constant BC_6 : CELL_INFO :=

( (BIDIR_IN, EXTEST, PI)              , (BIDIR_OUT, EXTEST, UPD),

(BIDIR_IN, SAMPLE, PI)          , (BIDIR_OUT, SAMPLE, PI),

(BIDIR_IN, INTEST, UPD)       , (BIDIR_OUT, INTEST, PI) );

-- Description for f10-34d, self monitor reversible

-- !! Recommended over cell BC_6 !!

constant BC_7 : CELL_INFO :=

( (BIDIR_IN, EXTEST, PI)              , (BIDIR_OUT, EXTEST, PO),

(BIDIR_IN, SAMPLE, PI)          , (BIDIR_OUT, SAMPLE, PI),

(BIDIR_IN, INTEST, UPD)       , (BIDIR_OUT, INTEST, PI) );

end STD_1149_1_1994; -- End of IEEE Std 1149.1-1994 Package Body