LPC2470FBD208,551 NXP Semiconductors, LPC2470FBD208,551 Datasheet - Page 255
![IC ARM7 MCU LCD 208-LQFP](/photos/12/13/121391/208-lqfp_sot459-1_pkg_sml.jpg)
LPC2470FBD208,551
Manufacturer Part Number
LPC2470FBD208,551
Description
IC ARM7 MCU LCD 208-LQFP
Manufacturer
NXP Semiconductors
Series
LPC2400r
Datasheets
1.OM11077.pdf
(792 pages)
2.LPC2470FET208551.pdf
(89 pages)
3.LPC2470FET208551.pdf
(91 pages)
Specifications of LPC2470FBD208,551
Package / Case
208-LQFP
Core Processor
ARM7
Core Size
16/32-Bit
Speed
72MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Type
ROMless
Ram Size
98K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
LPC24
Core
ARM7TDMI-S
Data Bus Width
16 bit, 32 bit
Data Ram Size
98 KB
Interface Type
CAN/I2C/I2S/SPI/SSP/UART/USB
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
160
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, MCB2470U
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
On-chip Dac
1-ch x 10-bit
Package
208LQFP
Device Core
ARM7TDMI-S
Family Name
LPC2000
Maximum Speed
72 MHz
Operating Supply Voltage
3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-4361-5
935284068551
LPC2470FBD208-S
935284068551
LPC2470FBD208-S
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC2470FBD208,551
Manufacturer:
NXP Semiconductors
Quantity:
10 000
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NXP Semiconductors
UM10237_4
User manual
IntStatus register is set in the case of a LateCollision, ExcessiveCollision, ExcessiveDefer,
or NoDescriptor error; Underrun errors are reported in the TxUnderrun bit of the IntStatus
register.
Underrun errors can have three causes:
The first and second situations are nonfatal and the device driver has to resend the frame
or have upper software layers resend the frame. In the third case the hardware is in an
undefined state and needs to be soft reset by setting the TxReset bit in the Command
register.
After reporting a LateCollision, ExcessiveCollision, ExcessiveDefer or Underrun error, the
transmission of the erroneous frame will be aborted, remaining transmission data and
frame fragments will be discarded and transmission will continue with the next frame in
the descriptor array.
Device drivers should catch the transmission errors and take action.
Transmit triggers interrupts
The transmit datapath can generate four different interrupt types:
•
•
•
•
•
•
•
The next fragment in a multi-fragment transmission is not available. This is a nonfatal
error. A NoDescriptor status will be returned on the previous fragment and the TxError
bit in IntStatus will be set.
The transmission fragment data is not available when the Ethernet block has already
started sending the frame. This is a nonfatal error. An Underrun status will be returned
on transfer and the TxError bit in IntStatus will be set.
The flow of transmission statuses stalls and a new status has to be written while a
previous status still waits to be transferred across the memory interface. This is a fatal
error which can only be resolved by a soft reset of the hardware.
If the Interrupt bit in the descriptor Control field is set, the Tx DMA will set the
TxDoneInt bit in the IntStatus register after sending the fragment and committing the
associated transmission status to memory. Even if a descriptor (fragment) is not the
last in a multi-fragment frame the Interrupt bit in the descriptor can be used to
generate an interrupt.
If the descriptor array is empty while the Ethernet hardware is enabled the hardware
will set the TxFinishedInt bit of the IntStatus register.
If the AHB interface does not consume the transmission statuses at a sufficiently high
bandwidth the transmission may underrun in which case the TxUnderrun bit will be set
in the IntStatus register. This is a fatal error which requires a soft reset of the
transmission queue.
In the case of a transmission error (LateCollision, ExcessiveCollision, or
ExcessiveDefer) or a multi-fragment frame where the device driver did provide the
initial fragments but did not provide the rest of the fragments (NoDescriptor) or in the
case of a nonfatal overrun, the hardware will set the TxErrorInt bit of the IntStatus
register.
Rev. 04 — 26 August 2009
Chapter 11: LPC24XX Ethernet
UM10237
© NXP B.V. 2009. All rights reserved.
255 of 792
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