21264/Ev68A Boundary-Scan Register; B.1.1 Bsdl Description Of The Alpha 21264/Ev68A Boundary-Scan Register - Compaq EV68A Hardware Reference Manual

21264/EV68A Boundary-Scan Register

This appendix contains the BSDL description of the 21264/EV68A boundary-scan reg-
ister.
B.1 Boundary-Scan Register
The Boundary-Scan Register (BSR) on the 21264/EV68A is 367 bits long. It is
accessed by the three public (SAMPLE, EXTEST, CLAMP) instructions. The register
operation for the public instructions is compliant with the IEEE 1149.1 standard.
The boundary-scan register covers all input, output, and bidirectional pins with the
exception of the compliance enable pins and pins that are power-supply-type or analog
in nature. The BSDL for the boundary-scan register is given in Section B.1.1.

B.1.1 BSDL Description of the Alpha 21264/EV68A Boundary-Scan Register

-------------------------------------------------------------------------------
-- alpha21264b.bsdl
--The BSDL Description for EV6's IEEE 1149.1 Circuits
-------------------------------------------------------------------------------
-- Revision
--Rev Date
-- 1.0 Feb 99
-------------------------------------------------------------------------------
entity Alpha_21264b is-- (ref B.8)
generic (PHYSICAL_PIN_MAP :string := "PGA_EV6");-- (ref B.8.2)
port (-- (ref B.8.3)
TestStat_H
SromOE_L
SromClk_H
SromData_H
Reset_L
IRQ_H
DcOk_H
NoConnect_0
NoConnect_1
PllBypass_H
FrameClk_H
FrameClk_L
ClkFwdRst_H
BcCheck_H
BcData_H
SysData_L
SysCheck_L
BcDataInClk_H
SysDataOutClk_L
Spare_7
21264/EV68A Hardware Reference Manual
History
Description
First external release
:out
:out
:out
:in
:in
:in
:linkage bit
:linkage bit
:linkage bit
:linkage bit
:linkage bit
:linkage bit
:in
:inout
:inout
:inout
:inout
:in
:out
:linkage bit_vector (0 to 7)
bit ;
bit ;
bit ;
bit ;
bit ;
bit_vector (0 to 5) ;
; -- Compliance enable input
; -- n/c
; -- n/c
;
;
;
bit ;
bit_vector (0 to 15);
bit_vector (0 to 127);
bit_vector (0 to 63) ;
bit_vector (0 to 7) ;
bit_vector (0 to 7) ;
bit_vector (0 to 7) ;
;
21264/EV68A Boundary-Scan Register
B
B–1