Cypress CY7C67300 manual IDE Registers

Models: CY7C67300

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CY7C67300

GPIO n Direction Register [R/W]

GPIO 0 Direction Register 0xC022

GPIO 1 Direction Register 0xC028

Table 81. GPIO n Direction Register

Bit #

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

Field

 

 

 

Direction Select...

 

 

 

Read/Write

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Default

0

0

0

0

0

0

0

0

Bit #

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

Field

 

 

 

...Direction Select

 

 

 

Read/Write

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Default

0

0

0

0

0

0

0

0

Register Description

The GPIO n Direction register controls the direction of the GPIO data pins (input/output). The GPIO 0 Direction register controls GPIO15 to GPIO0 while the GPIO 1 Direction register controls GPIO31 to GPIO16.

Direction Select (Bits [15:0])

The Direction Select field[15:0] configures the corresponding GPIO15–0 or GPIO31–16 pins as either input or output. When any bit of this register is set to ‘1’, the corresponding GPIO data pin becomes an output. When any bit of this register is set to ‘0’, the corresponding GPIO data pin becomes an input.

IDE Mode Register [0xC048] [R/ W]

Table 83. IDE Mode Register

IDE Registers

In addition to the standard IDE PIO Port registers, there are four registers dedicated to IDE operation. These registers are covered in this section and summarized in Table 82.

Table 82. IDE Registers

Register Name

Address

R/W

IDE Mode Register

0xC048

R/W

 

 

 

IDE Start Address Register

0xC04A

R/W

 

 

 

IDE Stop Address Register

0xC04C

R/W

 

 

 

IDE Control Register

0xC04E

R/W

 

 

 

IDE PIO Port Registers

0xC050-0xC06F

R/W

 

 

 

Bit #

15

14

13

12

 

11

10

9

8

Field

 

 

 

 

Reserved...

 

 

 

Read/Write

-

-

-

-

 

-

-

-

-

Default

0

0

0

0

 

0

0

0

0

Bit #

7

6

5

4

3

2

1

0

Field

 

 

...Reserved

 

 

 

Mode Select

 

Read/Write

-

-

-

-

R/W

R/W

R/W

R/W

Default

0

0

0

0

0

0

0

0

Register Description

The IDE Mode register allows the selection of IDE PIO Modes 0, 1, 2, 3, or 4. The default setting is zero which means IDE PIO Mode 0.

Mode Select (Bits [2:0])

The Mode Select field sets PIO Mode 0 to 4 in IDE mode. Refer to Table 84 on page 53 for a definition of this field.

Document #: 38-08015 Rev. *J

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Cypress CY7C67300 manual IDE Registers