Cypress CY7C67300 manual IDE Throughput Mode, Actual, Min Cycle Time

Models: CY7C67300

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CY7C67300

Table 14. IDE Throughput

Mode

ATA/ATAPI-4

Actual

ATA/ATPI-4

Actual

Min Cycle Time

Min Cycle Time

Max Transfer Rate

Max Transfer Rate

 

PIO Mode 0

600 ns

30T = 625 ns

3.33 MB/s

3.2 MB/s

PIO Mode 1

383 ns

20T = 416.7 ns

5.22 MB/s

4.8 MB/s

PIO Mode 2

240

13T = 270.8 ns

8.33 MB/s

7.38 MB/s

PIO Mode 3

180 ns

10T = 208.3 ns

11.11 MB/s

9.6 MB/s

PIO Mode 4

120 ns

8T = 166.7 ns

16.67 MB/s

12.0 MB/s

T = System clock period = 1/48 MHz.

IDE Features

Charge Pump Interface

Programmable IO mode 0–4

VBUS for the USB OTG port can be produced by EZ-Host using

Block mode transfers

its built in charge pump and some external components. Ensure

the circuit connections look similar to the following diagram.

Direct memory access to/from internal memory through the IDE

Figure 5. Charge Pump

data register

 

IDE Pins

Table 15. IDE Interface Pins

Pin Name

Pin Number

IORDY

46

D1D2

CSWITCHA

CY7C67300

CSWITCHB

C1

IOR

47

OTGVBUS

VBUS

IOW

48

CS1

50

 

 

CS0

52

 

 

A2

53

 

 

A1

54

 

 

A0

55

 

 

D15

56

 

 

D14

57

 

 

D13

58

 

 

D12

59

 

 

D11

60

 

 

D10

61

 

 

D9

65

 

 

D8

66

 

 

D7

86

 

 

D6

87

 

 

D5

89

 

 

D4

90

 

 

D3

91

 

 

D2

92

 

 

D1

93

 

 

D0

94

C2

Component details:

D1 and D2: Schottky diodes with a current rating greater than 60 mA

C1: Ceramic capacitor with a capacitance of 0.1 µF

C2: Make capacitor value no more that 6.5 µF since that is the maximum capacitance allowed by the USB OTG specifications for a dual role device. The minimum value of C2 is 1 µF. There are no restrictions on the type of capacitor for C2.

If the VBUS charge pump circuit is not to be used, CSWITCHA, CSWITCHB, and OTGVBUS can be left unconnected.

Charge Pump Features

Meets OTG Supplement Requirements, see Table 134, DC Characteristics: Charge Pump on page 84 for details.

Charge Pump Pins

Table 16. Charge Pump Interface Pins

Pin Name

Pin Number

OTGVBUS

11

 

 

CSwitchA

13

 

 

CSwitchB

12

 

 

Document #: 38-08015 Rev. *J

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Cypress CY7C67300 manual IDE Throughput Mode, Actual, Min Cycle Time, IDE Interface Pins Pin Name Pin Number