Intel CONTROLLERS 413808 - Manual (Page 792)

Intel ® 413808 and 413812—Test Logic Unit and Testability
Intel ® 413808 and 413812 I/O Controllers in TPER Mode
Developer’s Manual October 2007
792 Order Number: 317805-001US
18.2.3.3 Boundary-Scan Register
Boundary-Scan Register is a set of serial-shiftable register cells, connected between
each system pin and on-chip system logic. (Power, ground and TAP pins excluded.) This
forms a single shift register between TDI and TDO of all the system pins.
This is the most extensive, complex register in the test circuitry. This register allows
testing of circuitry external to the component (e.g. board interconnect) in addition to
device system logic. It permits the system signals (into and out of the system logic) to
be sampled and examined without causing interference with the normal operation of
the system logic. Further definition, rules, and specifics of the Boundary-Scan Register
can be found in the IEEE Std, 1149.1-2001, Chapter 10 .
18.2.3.4 Bypass Register
The Bypass Register is a single-bit, serial-shift register connecting TDI and TDO when
the Bypass instruction is in effect. This allows rapid movement of test data to and from
other board components, since this register provides the shortest path between TDI
and TDO . This path can be selected when no test operation is being performed. While
the Bypass Register is selected, data is transferred from TDI to TDO without inversion.
18.2.3.5 Device Identification Register
The Device Identification (ID) Register is a 32-bit register used for storing the
manufacturer identification, part number, and the version of the processor. It is a
dedicated part of the test logic and is not usable in system functionality.
The identification register is selected only by the
IDCODE instruction. When the
Test-Logic-Reset state of the TAP controller is entered, the IDCODE instruction is
automatically loaded into the instruction register. The generic format of the register is
discussed in chapter 11 of the IEEE 1149.1 Standard.
Figure 123. IOP Device ID Register
Note: See Intel ® 413808 and 413812 I/O Controllers
Table 520. IOP Device ID Register Field Definitions
Field Value Definition
Version 0000 = A-0 Step Indicates stepping changes.
Manufacturer ID 0000 0001 0011 (Indicates Intel) Manufacturer ID assigned by IEEE.
Table 521. IOP Device ID Register Settings
Description
Device ID
Complete ID (Hex) Complete ID (Binary)
4138xx A-0 (ATU-E) 0x3361 0011001101100001b
4138xx A-0 (ATU-XE) 0x3369 0011001101101001b
28 24 20 4 0 16 12 8
1 1 0 0 1 0 0 0 0 0 0 0
Manufacturer ID
Part Number
Version Model Gen Product Type
VCC
1 1 0 0 1 0 0 1 0 0 1 X X 0 1 0
B6314-01