CS98100 データシートの表示（PDF） - Cirrus Logic
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CS98100 Datasheet PDF : 60 Pages
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CS98100
1.2 AC CHARACTERISTICS
(TA= 25°C; VDD_PLL=VDD_CORE=1.8 V±10%, VDD_IO=3.3 V±10%)
1.2.1 ATAPI Interface
The CS98100 can interface with ATAPI-type slave loader gluelessly. Figure 1 illustrates a read ATAPI
transaction and a write ATAPI transaction. PIO mode 4 is implemented for sufficient data transfer rate be-
tween ATAPI device and the CS98100.
See Table 1 for the ATAPI symbols and characterization data.
Symbol
Description
Min Typ
tacyc1
Cycle Time
87
taavr
Address Valid to HMRD-/HMWR- Setup 7
tah
Address Hold from HMRD-/HMWR Setup 8
tarww
H_RD/H_WR Pulse Width
58
tarec
H_RD/H_WR Recovery Time
19
tawsu
H_WR Data Setup
20
tawh
H_WR Data Hold
4
tardsu
H_RD Data Setup
20
tarddh
H_RD Data hold
0
tardts
H_RD Data three-state
tarsu
H_RDY Setup Time
tarh1
H_RDY Hold Time
0
Table 1. ATAPI Interface Characteristics
1.Values are guaranteed by design only
t acyc
Max
7
14
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
H_A[2:0] ,
H_CS[3:0]
H_RD/H_WR
t aavr
t arww
t ah
tarec
H_D[15:0](WRITE)
H_D[15:0](READ)
tarsu
H_RDY(deasserted
before tarsu)
H_RDY(asserted
before tarsu)
tawsu
tawh
tardsu
t arddh
tardts
t arh
Figure 1. ATAPI Interface Timing Diagram
7
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