BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 314

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Number of Error
Maximum number of
correctable errors
Number of ECC bits
Error bit detection
method
Error bit correction
method
Error bit detection time
Others
4
3
2
1
0
3.11.4.1 Difference between Hamming Code ECC Calculation Method and Reed-Solomon ECC
Table 3.11.1 Differences between Hamming Code ECC Calculation Method and
Bits
ECC for every 256 bytes of valid data and is capable of detecting and correcting a
single-bit error for every 256 bytes. Error bit detection calculation and correction must
be implemented by software.
of ECC for every 1 byte to 512 bytes of valid data and is capable of detecting and
correcting error bits at 4-symbol for every 512 bytes. Although the Reed-Solomon ECC
calculation method needs error bit correction to be implemented by software as in the
case of the Hamming Code ECC calculation method, error bit detection calculation is
supported by hardware.
Reed-Solomon ECC calculation method are summarized in Table 3.11.1
Calculation Method
The NDFC includes an ECC generator supporting 2LC and 4LC.
The ECC calculation using Hamming codes (supporting 2LC) generates 22 bits of
When using Smart Media, Hamming codes should be used.
The ECC calculation using Reed-Solomon codes (supporting 4LC) generates 80 bits
The
differences
813 (max)
648 (max)
358 (max)
219 (max)
1
Reed-Solomon Error
Bit Detection Time
1-bit
22 bits/256 bytes
Supported by software.
Supported by software.
Supported by software, so it depends
on how the software is made.
Supports SmartMedia.
(Units: HCLK)
Reed-Solomon ECC Calculation Method
Hamming
between
TENTATIVE
TMPA900CM- 313
Hamming
These values indicate the total number of clocks for
detecting error bit(s) but do not include the register
read/write time by the CPU.
4-symbol
(All the 8 bits at one symbol are correctable.)
80 bits / up to 512 bytes
Detected by hardware.
Supported by software.
See the table below.
－
Code
Remarks
ECC
Reed Solomon
calculation
TMPA900CM
method
2009-10-14
and