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參數(shù)資料
| 型號： | IS82C237-12 |
| 廠商： | INTERSIL CORP |
| 元件分類： | DMA控制器 |
| 英文描述： | CMOS High Performance Programmable DMA Controller |
| 中文描述： | 4 CHANNEL(S), 12.5 MHz, DMA CONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 23/25頁 |
| 文件大小： | 158K |
| 代理商： | IS82C237-12 |
4-170
82C237
FIGURE 13. MEMORY-TO-MEMORY TRANSFER
NOTE: For 16-bit mode, 82C237 only. In 8-bit mode this signal is always high impedance three-stated. Waveform shown is for a 16-bit memory-to-memory
transfer. For an 8-bit transfer in 16-bit mode, DWLE will go high at least TASS before the falling edge of ADSTB in S2, then low TAHS after the falling
edge of ADSTB, and will remain low until the next ADSTB where the cycle is repeated.
FIGURE 14. READY
NOTE: READY must not transition during the specified setup and hold times.
Timing Waveforms
(Continued)
S0
(33)
TCLSH
CLK
S11
S12
S13
S14
S21
S22
S23
S24
S11/SI
ADSTB
A0-A7
DB0-DB7
MEMR
MEMW
EOP
EXT EOP
(34)
TCLSL
(7)
TAHS
TFAAB (22)
TASS (11)
TFADB (24)
(5) TAFDB
IN
A8-A15
(16) TDCTR
TFAC (23)
TFAC (23)
ADDRESS VALID
ADDRESS VALID
TAFDB
(5)
(33)
TCLSH
(34)
TCLSL
TWHSH
(60)
TCLSH
(33)
TAFAB
(3)
TAFAC
(4)
TAFAC
(4)
(59) TRHSH
TAHS
(7)
A8-A15
(24)
TFADB
TIDH (26)
TIDS
(27)
TDCL
(15)
TDCL
(15)
TDCTW (17)
TAK(9)
TAHS
(7)
TAK
(9)
OUT
TEPW
(21)
TEPS (20)
(19) TEPH
EXTENDED WRITE
TOVD
(29)
TODH (28)
TAZRL
(64)
TDCL
(15)
TASS
(11)
DWLE
TASS (11)
TAHS
(7)
TASS (11)
TOEV (65)
(SEE NOTE)
CLK
EXTENDED WRITE
(16)
TDCTR
S4
SW
SW
S3
S2
(15)
TDCL
(15)
TDCL
(15)TDCL
(31)TRH
(32)TRS
TRH
(32) TRS
(17)
TDCTW
READ
WRITE
READY
(31)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IS82C37A | 功能描述:外圍驅(qū)動器與原件 - PCI 44 PLCC -40+85C 5 0V 8 0MHZ DMA CNTRLR RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| IS82C37A-12 | 制造商:HARRIS 制造商全稱:HARRIS 功能描述:CMOS High Performance Programmable DMA Controller |
| IS82C37A-5 | 功能描述:外圍驅(qū)動器與原件 - PCI DMA CONTROLLER IC -4 0+85C 5.0V 5.0MHZ DM RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| IS82C50A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
| IS82C50A-5 | 功能描述:UART 接口集成電路 PERIPH UART/BRG 5V 10MHZ 44PLCC IND RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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