TMP92xy26AXBG Toshiba, TMP92xy26AXBG Datasheet - Page 246

• Manufacturer Part Number: TMP92xy26AXBG
• Manufacturer: Toshiba

Specifications of TMP92xy26AXBG

• Package: FPGA228
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): Romless
• Rom Combinations: Romless
• Ram Combinations: 144/288
• Architecture: 32-bit CISC
• Usb/spi Channels: 1/1
• Uart/sio Channels: 2
• I2c/sio Bus Channels: 1
• (s)dram Controller: 1
• Adc 10-bit Channel: 6
• Da Converter: -
• Timer 8-bit Channel: 8
• Timer 16-bit Channel: 2
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 136
• Power Supply Voltage(v): 3.0 to 3.6

Maximum number of
correctable errors
Number of ECC bits
Error bit detection
method
Error bit correction
method
Error bit detection time
Others
3.11.4.1 Differences between Hamming Codes and Reed-Solomon Codes
Number of
Error Bits
(or 2LC: two states) type and MLC (or 4LC: four states) type.
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. When using SmartMedia™, Hamming codes should be used.
ECC for every 1 byte to 518 bytes of valid data and is capable of detecting and correcting
error bits at four addresses for every 518 bytes. When using Reed-Solomon codes, error bit
detection calculation is supported by hardware and only error bit correction needs to be
implemented by software.
Table 3.11.1.
Table 3.11.1 Differences between Hamming Codes and Reed-Solomon Codes
4
3
2
1
0
The NDFC includes an ECC generator supporting NAND Flash memory devices of SLC
The ECC calculation using Hamming codes (supporting SLC) generates 22 bits of ECC
The ECC calculation using Reed-Solomon codes (supporting MLC) generates 80 bits of
The differences between Hamming codes and Reed-Solomon codes are summarized in
Reed-Solomon Error Bit
1 bit
22 bits/256 bytes
Software
Software
Depends on the software to be used.
Supports SmartMedia™.
Detection Time
(Unit: Clocks)
813 (max)
648 (max)
358 (max)
219 (max)
1
Hamming
92CF26A-244
These values indicate the total number of clocks for
detecting error bit(s) not including the register read/write
time by the CPU.
4 addresses
(All the 8 bits at one address are correctable.)
80 bits/up to 518 bytes
Hardware
Software
See the table below.
−
Notes
Reed-Solomon
TMP92CF26A
2009-06-25