Datasheet

Zeus 2.5-Inch ATA Solid State Drive 19
Connector Pinout
Table 7 provides the signal assignment for each pin on the ATA (IDE) bus connector. The table
applies to the 44-pin ATA bus/DC power combination connector used on 2.5-inch drives.
Table 7. ATA Connector Pinout Configuration
Pin Pin Type Signal Symbol Signal Name Signal Description
1 1 -RESET HOST RESET Reset signal from host. Reset is active on power
up and inactive thereafter.
2 Ground GND - Ground
3 I/O D07 HOST DATA 07 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.
4 I/O D08 HOST DATA 08
5 I/O D06 HOST DATA 06
6 I/O D09 HOST DATA 09
7 I/O D05 HOST DATA 05
8 I/O D10 HOST DATA 10
9 I/O D04 HOST DATA 04
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 00
18 I/O D15 HOST DATA 15
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
27 I IORDY I/O READY Not used. Pulled up to Vcc through a 4.7k ohm
resistor.