vpx3224d ETC-unknow, vpx3224d Datasheet - Page 40

• Manufacturer Part Number: vpx3224d
• Description: Video Pixel Decoders
• Manufacturer: ETC-unknow

40
VPX 3225D, VPX 3224D
2.16.4.3. Self-Test Operation
(Section 12.3.1.b.iii of IEEE 1149.1-1990).
There is no self-test operation included in the VPX de-
sign which is accessible via the TAP.
2.16.4.4. Test Data Registers
(Section 12.3.1.b.iv of IEEE 1149.1-1990).
The VPX includes the use of four test data registers.
They are the required bypass and boundary scan regis-
ters, the optional ID code register, and the master mode
register.
The bypass register is, as defined, a 1-bit register ac-
cessed by codes 100 through 111, inclusive. Since the
design includes the ID code register, the bypass register
is not placed in the serial path upon power-up or Test-
Logic-Reset.
The master mode is an 8-bit test register which is used
to force the VPX into special test modes. This is reset
upon power-on-reset. This register supports shift and
update only. It is not recommended to access this regis-
ter. The loading of that register can drive the IC into an
undefined state.
31
0 0 0 1 0 1 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1
Fig. 2–41: Device identification register
Version
2
28 27
7
Part Number
2
3
0
12 11
7F
0
8
2.16.4.5. Boundary Scan Register
(Section 12.3.1.b.v of IEEE 1149.1-1990)
The boundary scan chain has a length of 38 shift regis-
ters. The scan chain order is specified in the section “Pin
Connections”.
2.16.4.6. Device Identification Register
(Section 12.3.1.b.vi of IEEE 1149.1-1990)
The manufacturer’s identification code is “6C”
Micronas. The general implementation scheme uses
only the 7 LSBs and excludes the MSB, which is the par-
ity bit. The part number is “7230”
VPX 3225D and “7231”
version code starts from “1”
revision. The version number relates to changes of the
chip interface only.
2.16.4.7. Performance
(Section 12.3.1.b.vii of IEEE 1149.1-1990)
See section “Specification” for further information.
7
Manufacturer ID
d
1
0 0
9
1
1
0
(hex)
PRELIMINARY DATA SHEET
(hex)
. in case of VPX 3224D. The
and changes with every
(hex)
. in case of
Micronas
(hex)
for