PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 99

• Manufacturer Part Number: PEF22827EL-V11
• Manufacturer: Lantiq

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

7.5.1
Firmware download takes up to three seconds. After it is finishes, the digital transceiver
does one of the following:
•
•
To determine whether or not firmware download succeeded, read the
register (5F6F
•
•
Firmware download from EEPROM fails in the following cases:
•
•
•
•
•
See
7.5.2
The boot loop enables firmware download to the RAM through the parallel interface or
the MDIO interface, or from the remote modem. During the boot loop, you can also load
the EEPROM. This allows system vendors to write content to the EEPROM on the board,
after board assembly.
The digital transceiver exits from the boot loop and enters normal operation as soon as
the firmware is loaded and the
During the boot loop, only the following user registers are supported:
•
•
•
•
7.5.2.1
To download firmware using parallel or MDIO management interfaces, write the code to
RAM at addresses 2000
Preliminary Data Sheet
If firmware download was successful, normal operation begins.
If firmware download is not successful, the digital transceiver enters a boot loop
within a few milliseconds. During the loop the user can manually download firmware
to RAM or write data to the EEPROM.
If the FW_DLOAD register is set to 01
operation has begun.
If this register is cleared to 00
is in a boot loop.
The EEPROM is not enabled; that is, the EEPROM_EN configuration pin is not set
to 1. See
The EEPROM is not valid; that is, the EEPROM Valid field in the EEPROM is not 55
There is no valid FW bank in the EEPROM.
The checksum content of the valid FW bank is not correct.
There is an electrical problem in the EEPROM or in the I
“Version Status Registers” on Page
“RAM Check Registers” on Page
“Firmware Control Register” on Page
“EEPROM Control Registers” on Page
“EEPROM Structure” on Page 83
Firmware Download from EEPROM
The Boot Loop
Download Using Local Interfaces
Table 27 “Configuration Pins” on Page
H
).
H
through 7DFF
FW_DLOAD
H
, firmware download failed and the digital transceiver
208: addresses 5F67
H
for more information about these problems.
.
H
99
205: addresses 5F62
, firmware download succeeded and normal
210: address 5F6F
register at 5F6F
211: addresses 5F70
81.
2
Operation – Digital Block
H
H
C lines.
:5F6D
is set to 01
H
H
.
:5F65
H
:5FF7
H
Rev. 1.1, 2005-01-30
.
H
H
H
VDSL6100i
.
FW_DLOAD
PEF 22827
.
H
.