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CS7808 데이터시트(PDF) 7 Page - Cirrus Logic

부품명 CS7808
상세설명  MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR
PDF  52 Pages
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제조업체  CIRRUS [Cirrus Logic]
홈페이지  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS7808 데이터시트(HTML) 7 Page - Cirrus Logic

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CS7808
1.2
DC CHARACTERISTICS
(TA= 25°C; VDD_PLL=VDD_CORE=2.5V±10%, VDD_IO=3.3V±10%)
1.2.1
Host Interface
CS7808 can interface with a ATAPI-type slave loader gluelessly. Figure 1 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 CS7808.
Symbol
Description
Min
Typ
Max
Unit
tacyc
Cycle Time1
1.Values are guaranteed by design only.
98
ns
taavr
Address Valid to HMRD-/HMWR- Setup
10
ns
tah
Address Hold from HMRD-/HMWR- Setup
10
ns
tarww
H_RD-/H_WR- Pulse Width
72
ns
tarec
H_RD-/H_WR- Recovery Time
22
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
0
ns
tarddh
H_RD- Data High-Z
0
10
tarsu
H_RDY Setup Time
12
ns
tarh
H_RDY Hold Time1
0ns
Table 1. Host Interface Characteristics
Figure 1. Host Timing Diagram
H_A[2:0] ,
H_CS[3:0]
H_D[15:0](WRITE)
H_D[15:0](READ)
H_RD/H_WR
tacyc
t aavr
t arww
t ah
tarec
tarsu
tawh
tawsu
tardsu
t arddh
tardts
t arh
H_RDY(deasserted
before tarsu)
H_RDY(asserted
before tarsu)



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