PNX1501E,557 NXP Semiconductors, PNX1501E,557 Datasheet - Page 217

• Manufacturer Part Number: PNX1501E,557
• Description: IC MEDIA PROC 266MHZ 456-BGA
• Manufacturer: NXP Semiconductors

Specifications of PNX1501E,557

• Applications: Multimedia
• Core Processor: TriMedia
• Controller Series: Nexperia
• Interface: I²C, 2-Wire Serial
• Number Of I /o: 61
• Voltage - Supply: 1.14 V ~ 1.26 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 456-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Program Memory Type: -
• Ram Size: -
• Other names: 935274728557; PNX1501E; PNX1501E

Philips Semiconductors
Volume 1 of 1
4. The Boot From an I
Table 10: Examples of I
PNX15XX_SER_3
Product data sheet
Size
256 bytes
512 bytes
1 kilobytes
2 kilobytes
2 kilobytes
Device
ATMEL 24C02
ATMEL 24C04
ATMEL 24C08
PHILIPS PCF85116-3 Full Array
SUMMIT SMS8198
4.1 External I
2
C EEPROM Devices
If none of the built-in scripts is suitable e.g., due to a different type of NAND-Flash or
a different memory organization or anything not matching the internal boot scripts, an
external serial boot EEPROM is required. Depending on the application
characteristics, this can be a small (1 Kilobyte or less) EEPROM that contains a small
boot script and starts the PNX15xx Series system in host-assisted mode or boot from
Flash memory or ROM devices. Alternately, a large serial EEPROM can be used to
contain a complete disk file system or an upload capability from another device than
Flash/ROM.
For a 2-Kilobyte or smaller EEPROM, the script must start at byte address 1 (not 0).
For a 4-Kilobyte or larger EEPROM, the boot script must start at byte address 0. More
details in
word value (the byte read first ends up as the least significant byte, LBS). The 32-bit
words are then interpreted as commands, as documented earlier in
Remark: It has been seen that depending on the Write Protect pin status, some
EEPROMs do not behave the same way on a write of 0 bytes
internal counter gets or does not get incremented which makes this rule of where the
first byte is located at address 0 or 1 different. Refer to EEPROM datasheet or try both
options.
The PNX15xx Series Boot module supports all I
wire EEPROMs) that use a 1-byte or 2-byte address protocol and respond to an I
device code 1010 (binary). Subtle differences exist between devices For example:
Table 10
operation for all these devices been verified.
•
•
•
•
It is recommended to avoid devices that have partial array write protection, since
such devices could be overwritten by accidental or intentional I
boot failure during the next reset.
Some devices may have additional functionality that is useful, like a watchdog
timer or a power voltage drop sensor.
Availability from different vendors may vary.
Programming protocols may vary.
2
Write Protection
Coverage
Full Array
Full Array
Full Array
Full Array
C EEPROM
lists a variety of devices. This list is by no means exhaustive, nor has
Section
2
C Boot EEPROM Types
4.3. Each set of four successive bytes is assembled into a 32-bit
Rev. 3 — 17 March 2006
Address Protocol
1 byte
1 byte
1 byte
1 byte
1 byte
2
C EEPROMs (sometimes called 2-
Comment
Tested
Includes power-on reset for board
system reset generation
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX15xx Series
Chapter 6: Boot Module
(Section
2
C writes, causing
Section
4.3). The
2.3.
2
6-14
C