TXC-06312BIOG Transwitch Corporation, TXC-06312BIOG Datasheet - Page 147

• Manufacturer Part Number: TXC-06312BIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-06312BIOG

• Lead Free Status / Rohs Status: Supplier Unconfirmed

1 4 7 o f 2 02
12.9 BOUNDARY SCAN
12.9.1 Introduction
The Boundary Scan Interface Block provides a five-lead Test Access Port (TAP) that con-
forms to the IEEE 1149.1 standard. This standard provides external boundary scan functions
to read and write the external Input/Output leads from the TAP for board and component test.
The IEEE 1149.1 standard defines the requirements of a boundary scan architecture that has
been specified by the IEEE Joint Test Action Group (JTAG). Boundary scan is a specialized
scan architecture that provides observability and controllability for the interface leads of the
device. As shown in
or output lead to be observed or tested (bidirectional leads may have two cells). The bound-
ary scan capability is based on a Test Access Port (TAP) controller, instruction and bypass
registers, and a boundary scan register bordering the input and output leads. The boundary
scan test bus interface consists of four input signals (Test Clock (TCK), Test Mode Select
(TMS), Test Data Input (TDI) and Test Reset (TRS) and a Test Data Output (TDO) output sig-
nal. Boundary scan signal timing is shown in
Figure
Figure 53. General Interrupt Tree (part 3)
54, one cell of a boundary scan register is assigned to each input
- Telecom Bus -
GeneralInterrupts(Mixed Signal) &
~ GeneralInterrupts_Mask(Mixed Signal)
CDR_CS_Status_LatchedForInt(Transmit PLL Lock) &
~ CDR_CS_Status_Mask(Transmit PLL Lock)
CDR_CS_Status_LatchedForInt(Receive PLL Lock) &
~ CDR_CS_Status_Mask(Receive PLL Lock)
CDR_CS_Status_LatchedForInt(SignalDetect Line 1) &
~ CDR_CS_Status_Mask(SignalDetect Line 1)
CDR_CS_Status_LatchedForInt(SignalDetect Line 2) &
~ CDR_CS_Status_Mask(SignalDetect Line 2)
CDR_CS_Status_LatchedForInt(SignalDetect Line 3) &
~ CDR_CS_Status_Mask(SignalDetect Line 3)
CDR_CS_Status_LatchedForInt(SignalDetect Line 4) &
~ CDR_CS_Status_Mask(SignalDetect Line 4)
CDR_CS_Status_LatchedForInt(Lock Indication PRBS Analyzer) &
~ CDR_CS_Status_Mask(Lock Indication PRBS Analyzer)
Figure
26.
PRELIMINARY TXC-06312B-MB, Ed. 2
PHAST-12N Device
DATA SHEET
TXC-06312B
June 2005