- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98145 > ST7267R8T1L/XXX (STMICROELECTRONICS) 16-BIT, MROM, 30 MHz, RISC MICROCONTROLLER, PQFP64 PDF資料下載
參數(shù)資料
| 型號(hào)： | ST7267R8T1L/XXX |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 30 MHz, RISC MICROCONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, LEAD FREE, TQFP-64 |
| 文件頁(yè)數(shù)： | 55/189頁(yè) |
| 文件大?。?/td> | 1643K |
| 代理商： | ST7267R8T1L/XXX |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)當(dāng)前第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)
ST7267C8 ST7267R8
148/189
MSCI PARALLEL INTERFACE (Cont’d)
17.6 ECC GENERATOR
The ECC generator is a hardware system that
computes Error Code Correction parity bits from
data sent or received by the parallel interface. It is
compliant with the Smart Media Card specifica-
tion. It allows correction of one bit in each 256-byte
data packet. It is designed to work with 512-byte
packets: two ECC codes are stored in internal reg-
isters and can be read by the MSCI core after the
512-byte packet has been sent or received by the
parallel interface.
Each Generated code is made of 16 line parity bits
and 6 column parity bits. This 22bit ECC is gener-
ated every 256 bytes of data. If the parallel inter-
face is used in 16-bit data mode, the data word is
split into two bytes that are sent to the ECC gener-
ator. The order of the bytes in the word for the
ECC generator can be selected with the bit 2 of the
PCR2 register (ECC Swap Bytes). For each 512-
byte packet, two ECC results are automatically
stored by the ECC generator without interrupting
the communication. The ECC generated for the
first 256 bytes is stored in the ELP1 and ECP1 reg-
isters, the ECC generated for the next 256 bytes is
stored in the ELP2 and ECP2 registers. If more
than 2*256 bytes are sent/received, only the two
first ECCs are stored. Two flags are available in
the PSR register to indicate whether ECC1 and
ECC2 are available for reading or not.
The ECC generator and the ECC line and column
parity registers are reset when a new start is per-
formed on the parallel interface.
Figure 65. ECC generator implementation
Word 7
Word 6
Word 5
Word 4
Word 3
Word 2
Word 1
Word 0
COM. BUFFER (0 or 1)
word/byte
conversion
ECC swap bytes
ECC generator
ELP1 register
ECP1 register
ELP2 register
ECP2 register
Input or Output
mode
ECC1 ready
ECC2 ready
previous data word
ECC1 stored
ECC2 stored
Status flags
received from I/Os
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST7267C8T1/XXX | 16-BIT, MROM, 30 MHz, RISC MICROCONTROLLER, PQFP48 |
| ST72774S9T1/XXX | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44 |
| ST72E734J6D0 | 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP42 |
| ST72T774S9T1 | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP44 |
| ST7294C6B6 | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST72681/R12 | 制造商:STMicroelectronics 功能描述:CONTROLLER FOR HIGH-PERFORMANCE BUS-POWERED USB 2.0 FLASH DR - Trays |
| ST72681/S13 | 制造商:STMicroelectronics 功能描述:CONTROLLER FOR HIGH-PERFORMANCE - Trays |
| ST7271 | 制造商:Panasonic Industrial Company 功能描述:IC |
| ST7271N5B1-CLF | 制造商:STMicroelectronics 功能描述: |
| ST727X4-EMU2B | 制造商:STMicroelectronics 功能描述:REALTIME EMULATOR BOARD - Bulk |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。