CY7C68310
Document 38-08030 Rev. *H
Page 2 of 34
2.0
Applications
The CY7C68310 implements a USB 2.0 bridge for all
ATA/ATAPI-6 compliant mass storage devices, such as:
• Hard drives, including small form factor drives (2.5”, 1.8”,
and 1.0”) designed for portable consumer electronics appli-
cations
• CD-ROM, CD-R/W
• DVD-ROM, DVD-RAM, DVD-R/W
• MP3 players
• Compact flash
• Microdrives
• Tape drives
• Personal video recorders.
2.1
Additional Resources
• CY4617 – CY7C68310 Mass Storage Reference Design Kit
• USB Specification version 2.0
• ATA Attachment-6 with Packet Interface revision 3b
• USB Mass Storage Class Bulk-Only Transport specification,
Rev. 1.0
3.0
Introduction
The CY7C68310 implements a bridge between one USB port
and one ATA/ATAPI-based mass storage device port. This
bridge adheres to the Mass Storage Class Bulk-Only
Transport specification, version 1.0.
The USB port of the CY7C68310 is connected to a host
computer directly or via the downstream port of a USB hub.
Host software issues commands and data to the CY7C68310
and receives status and data from the CY7C68310 using
standard USB protocol.
The ATA/ATAPI port of the CY7C68310 is connected to a mass
storage device. A 2-Kbyte buffer maximizes ATA/ATAPI data
transfer rates by minimizing losses due to device seek times.
The ATA interface supports ATA PIO modes 0–4, and Ultra
Mode DMA modes 0–4.
The device initialization process is configurable, enabling the
CY7C68310 to initialize most ATA/ATAPI devices without
software intervention. The CY7C68310 can also be configured
to allow software initialization of a device if initialization
requirements are not supported by CY7C68310 algorithms.
4.0
Pin Assignments
4.1
Pin Diagram
Figure 4-1. 80-pin TQFP
CY7C68310-80AC
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
1
3
2
4 5
6
7 8
9 10 11 12 13 14 15 16 17 18 19 20
38
39
40
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
59
60
57
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
58
VDD25
VBUSPWRVLD
VBUSPWRD
DISKRDY
SDA_nIMODE
SCL
nPWR500
nCS1
nCS0
DA2
DA0
VDD33
DA1
ATAIRQ
nDMACK
ATAPUEN
IORDY
nDIOR
nDIOW
VDD33
VDD25
DD7
TMC2
TMC1
nATARST
nRESET
LOWPWR
SCANEN
GPIO2_nHS
GPIO1
GPIO0
ATAEN
DRVPWRVLD
SYSIRQ
nEJECT
TEST3
VDD33
XO
XI
VSS
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