SimpleTech Zeus Ultra Manuel D’Utilisation

Functional Description

Zeus SSD Functional Blocks

16

 Zeus Ultra DMA Solid State Drives

27

I

IORDY

I/O READY

Not used, and pulled up to Vcc through a 
4.7k ohm resistor.

28

I

-CSEL

CABLE SELECT

This internally pulled up signal is used to 
configure the drives as the Master or the 
Slave device. When the pin is grounded, the 

device is configured as a Master. When the 
pin is open, the device is configured as a 
Slave.

29

I

-DACK

DMA ACKNOWLEDGE

Not used

30

Ground

GND

—

Ground

31

O

INTRQ

INTERRUPT REQUEST This is an interrupt request from the 

controller to the host, asking for service. 
This signal is the active high Interrupt 

Request to the host.

32

O

-IOS16

I/O SELECT 16

Not used

33

I

A1

HOST ADDRESS 1

This address line (A1) is used to select one 
of eight registers in the controller Task File.

34

I/O

-PDIAG

After an Executive diagnostic command to 
indicate to the Master it has passed its 
diagnostics, this bi-directional open drain 

signal is asserted by the Slave.

35

I

A0

HOST ADDRESS 0

These address lines (A0 and A2) are used to 
select one of eight registers in the controller 

Task File.

36

I

A2

HOST ADDRESS 2

37

I

-CS1

HOST CHIP SELECT 1

The chip select signal used to select the 

Task File register.

38

I

-CS2

HOST CHIP SELECT 2

The chip select signal used to select the 
Alternate Status register and the Device 

Control register.

39

I/O

-DASP

DISK ACTIVE/SLAVE 

PRESENT

This input/output is the Disk Active/Slave 

Present signal in the Master/Slave 
handshake protocol.

40

Ground

GND

—

Ground

41*

—

V

CC

Supply Voltage

5V power supply

42*

—

V

CC

Supply Voltage

5V power supply

43*

Ground

GND

—

Ground

44*

—

—

—

No connection

* Applies to 44-pin, 2.5-inch SSD only