전자부품 데이터시트 검색엔진 |
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CS98000 데이터시트(PDF) 7 Page - Cirrus Logic |
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CS98000 데이터시트(HTML) 7 Page - Cirrus Logic |
7 / 46 page 7 CS98000 1.2 DC CHARACTERISTICS (TA= 25°C; VDD_PLL=VDD_CORE=2.5V±10%, VDD_IO=3.3V±10%) 1.2.1 ATAPI Interface CS98000 can interface with a ATAPI-type slave loader gluelessly. Figure1 illustrates a read ATAPI trans- action and a write ATAPI transaction. PIO mode 4 is implemented to enable a sufficient data transfer rate between ATAPI device and CS98000. Note: ATAPI interface is a standard administered by the T13 committee that is responsible for all interface standards relating to the AT Attachment (ATA) storage interface. T13 is a technical committee for the National Committee on Information Technology Standards (NCITS).See http://www.t13.org/. Symbol Description Min Typ Max Unit tacyc Cycle Time1 1.Values are guaranteed by design only. 70 ns taavr Address Valid to HMRD-/HMWR- Setup 20 ns tarww H_RD-/H_WR- Pulse Width 70 ns tarec H_RD-/H_WR- Recovery Time 25 ns tawsu H_WR- Data Setup 20 ns tawh H_WR- Data Hold 10 ns tardsu H_RD- Data Setup 20 ns tarddh H_RD- Data hold 5 ns tardr Read Data Valid to H_RDY Active 0 ns tarsu H_RDY Setup Time 35 ns taipw H_RDY Pulse Width 1250 ns tarls H_RDY Assertion to Release 5 ns Table 1. ATAPI Interface Symbols / Characterization Data H_D[15:0](WRITE) H_D[15:0](READ) H_RD-/H_WR- tacyc taavr tarww tarec tarsu tawh tawsu taipw tardsu tarddh tardr tarls tarar H_RDY(deasserted before tarsu) H_RDY(asserted before tarsu) H_A[4:0] Din Dout Figure 1. ATAPI Transactions - Read and Write |
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