Zeus SSD Functional BlocksFunctional Description

Table 4. ATA (IDE) Connector Pinout Configuration (Continued)

Pin

Pin Type Signal Symbol Signal Name

Signal Description

3

I/O

D07

HOST DATA 7

4

I/O

D08

HOST DATA 8

5

I/O

D06

HOST DATA 6

6

I/O

D09

HOST DATA 9

7

I/O

D05

HOST DATA 5

8

I/O

D10

HOST DATA 10

9

I/O

D04

HOST DATA 4

10

I/O

D11

HOST DATA 11

11

I/O

D03

HOST DATA 03

12

I/O

D12

HOST DATA 12

13

I/O

D02

HOST DATA 02

14

I/O

D13

HOST DATA 13

15

I/O

D01

HOST DATA 01

16

I/O

D14

HOST DATA 14

17

I/O

D00

HOST DATA 0

18

I/O

D15

HOST DATA 15

Pins 3 through 18 (16 lines (15-0)) carry the data between the controller and the host. The low 8 lines transfer commands and the ECC information between the host and the controller.

19

Ground

GND

—

Ground

20

—

—

—

No connection. Reserved for connector key.

 

 

 

 

 

21

O

DREQ

DMA REQUEST

Not used

 

 

 

 

 

22

Ground

GND

—

Ground

 

 

 

 

 

23

I

-IOWR

I/O WRITE

This I/O Write strobe pulse is used to clock

 

 

 

 

I/O data or commands on the drive data bus

 

 

 

 

into the Drive controller registers when the

 

 

 

 

drive is configured to use the I/O interface.

 

 

 

 

The clocking will occur on the negative to

 

 

 

 

positive edge of the signal (trailing edge).

 

 

 

 

 

24

Ground

GND

—

Ground

 

 

 

 

 

25

I

-IORD

I/O READ

This is a Read strobe generated by the host.

 

 

 

 

The signal gates I/O data or status on the

 

 

 

 

host bus and strobes the data from the

 

 

 

 

controller into the host on the low to high

 

 

 

 

transition (trailing edge).

 

 

 

 

 

26

Ground

GND

—

Ground

 

 

 

 

 

 

 

 

 

Continued

Zeus Ultra DMA Solid State Drives

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