pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 224
![no-image](/images/no-image-200.jpg)
pc87591l-n05
Manufacturer Part Number
pc87591l-n05
Description
Lpc Mobile Embedded Controller
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87591L-N05.pdf
(401 pages)
- Current page: 224 of 401
- Download datasheet (2Mb)
www.national.com
4.0 Embedded Controller Modules
Clock Synchronization
Some operations are related to TCK, others to the PC87591L-N05 main clock and yet others are asynchronous. The
PC87591L-N05 logic guarantees correct operation and a meta-stable protected interface in all its operating modes (i.e., Ac-
tive and Idle).
The core may access the Debugger interface registers only in Active mode.
4.19.4 Test Access Port (TAP)
This section defines the top-level design of the TAP, as shown in Figure 77. Subsequent sections provide detailed TAP de-
sign requirements.
The TAP includes the following elements:
The Instruction and data registers have separate shift register-based paths connected in parallel. These registers have a
common serial data input and a common serial data output connected to the TAP TDI and TDO signals, respectively.
The TAP controller selects between TDI and TDO as the alternative instruction and data register paths.
Further Information
The TAP is based on the test logic in the IEEE 1149.1b-1994 specification. However, since its purpose is to facilitate com-
munication, it does not support IEEE 1149.1b-1194 testing facilities. It is used here to benefit from off-the-shelf bus controller
cards and software and potential future enhancements to the test scheme.
This document includes the relevant rules of this specification. See the following documents for further information.
• TAP signals
• TAP controller
• Instruction Register (IR)
• Data registers.
• For further details and examples of the standard, see IEEE Standard Test Access Port and Boundary-Scan Architec-
• For further details of test bus chips and equipment, see the relevant manufacturer datasheets and application notes,
• For technical background, refer to text books on the subject, for example, Colin M. Maunder and Rodham E. Tulloss,
ture, May 21, 1990
e.g., SCANTM Data book, National Semiconductor 400102.
“The Test Access Port and Boundary-Scan Architecture”, IEEE Computer Society Press Tutorial
TDI
TMS
TCK
.
BYPASS Register
DBGMASKS Register
Instruction Decode
DBGDATA Register
Instruction Register
Figure 77. TAP Block Diagram
(Continued)
Clocks and/or Controls
224
TAP Controller
G
Output Buffer
.
TDO
Revision 1.2
Related parts for pc87591l-n05
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![pc87591l](/images/no-image3.png)
Part Number:
Description:
Lpc Mobile Embedded Controllers
Manufacturer:
National Semiconductor Corporation
Datasheet:
![PC875](/photos/7/69/76943/425-8-dip_tmb.jpg)
Part Number:
Description:
PHOTOCOUPLER 2CH OUT 8-DIP
Manufacturer:
Sharp Microelectronics
Datasheet:
![mma1270keg](/images/no-image3.png)
Part Number:
Description:
Freescale Semiconductor Technical Data
Manufacturer:
National Semiconductor Corporation
Datasheet:
![ADC12034](/images/no-image3.png)
Part Number:
Description:
Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2350](/images/no-image3.png)
Part Number:
Description:
Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2324](/images/no-image3.png)
Part Number:
Description:
Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2301](/images/no-image3.png)
Part Number:
Description:
Pllatinumtm 160 Mhz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![NDS8963](/images/no-image3.png)
Part Number:
Description:
Dual N-channel Enhancement Mode Field Effect Transistor
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM1201](/images/no-image3.png)
Part Number:
Description:
Video Amplifier System (obsolete)
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM3501TL-16](/images/no-image3.png)
Part Number:
Description:
Synchronous Step-up DC/DC Converter For White Led Applications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![AD9621](/images/no-image3.png)
Part Number:
Description:
CLC420 - High Speed, Voltage Feedback op Amp, Package: Lcc, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM2403](/images/no-image3.png)
Part Number:
Description:
Monolithic Triple 4.5 CRT Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM592M](/images/no-image3.png)
Part Number:
Description:
Differential Video Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
![ADC10061](/images/no-image3.png)
Part Number:
Description:
ADC10061 - 10-Bit 600 NS A/D Converter With Input Multiplexer And Sample/Hold, Package: Soic Wide, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
![DS36277TMX](/images/no-image3.png)
Part Number:
Description:
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer:
National Semiconductor Corporation
Datasheet: