pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 398
pnx1700
Manufacturer Part Number
pnx1700
Description
Connected Media Processor
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1700.pdf
(832 pages)
- Current page: 398 of 832
- Download datasheet (8Mb)
Philips Semiconductors
Volume 1 of 1
PNX17XX_SER_1
Preliminary data sheet
4.8.1 Layer Underflow
4.8.2 Underflow Symptom
4.8.3 Underflow Recovery
4.8.4 Underflow Trouble-shooting
4.8.5 Underflow Handling
4.9 Setting QVCP for External VSYNC
Any time the layer position has reached but the small 16-pixel FIFO at the end of
every layer pipe has run out of available pixels, underflow occurs.
Should an underflow occur, the layer would fetch and dump remaining data for the
current field/frame. The next field/frame would be fetched and displayed as normal.
The underflow interrupt status would stay asserted until an interrupt-status-clear is
programmed.
Set the following bits in MMIO register 0x10,E020 as follows:
•
•
•
•
•
•
•
•
•
•
•
•
Only portion of a picture is displayed or occasional blinking of picture happens
Underflow interrupt bit is set.
Check if the DMA source width settings (0x10,Ex08) matches the initial layer
width (0x10,Ex34)
Check if the initial layer width (0x10,Ex34) matches the final layer width
(0x10,ExB4) for the non-scaled layer.
Check if the final layer width (0x10,ExB4) is within acceptable cropping range for
LINT or HSRU scaling.
Check whether the DMA start fetch (0x10,ExC8) is at line number too close to the
display position. Note that about 64 pixels is QVCP’s input-to-output latency. So,
depending on the system-memory latency, the DMA fetch should start as early as
possible, in order to make up for the request-to-data latency.
Check if the system memory arbiter is giving high priority to QVCP.
Check if QVCP demands exceed allocated memory bandwidth.
bit 1 (master) = 1;
bit 2 (Trigger_pol) = 1; for posisitive edge trigger
bit 16 (SYNCCtl) = 0; VSYNC pin becomes an input
bit 24 (VSYNCPol) = 0;
Rev. 1 — 17 March 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
Chapter 11: QVCP
11-41
Related parts for pnx1700
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
NXP Semiconductors designed the LPC2420/2460 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2458 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2468 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2470 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2478 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The XA-S3 device is a member of Philips Semiconductors? XA(eXtended Architecture) family of high performance 16-bitsingle-chip microcontrollers
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP BlueStreak LH75401/LH75411 family consists of two low-cost 16/32-bit System-on-Chip (SoC) devices
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP LPC3130/3131 combine an 180 MHz ARM926EJ-S CPU core, high-speed USB2
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP LPC3141 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3143 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3152 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3154 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
Standard level N-channel enhancement mode Field-Effect Transistor (FET) in a plastic package using NXP High-Performance Automotive (HPA) TrenchMOS technology
Manufacturer:
NXP Semiconductors
Datasheet: