
PCI Express to Serial ATA Controller
Data Sheet
3.3.2 LED / Hot Plug pins
Signal Name
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0208-C
16
Pin Number(s)
Description
Activity LED.
Activity LED driver for the Serial ATA channel. This is an active
low output (LED lit when pin is at 0V).
Connect LED.
Connect LED driver for the Serial ATA channel. This is an
active low output (LED lit when pin is at 0V).
Hot Plug LED.
ATTENTION LED driver for Hot Plug. This is an active low
output (LED lit when pin is at 0V).
Hot Plug LED.
POWER LED driver for Hot Plug. This is an active low output
(LED lit when pin is at 0V).
Hot Plug Switch input.
Input for the Hot Plug Attention switch. This is an
active low input (closed switch connects input to 0V).
Hot Plug enable.
Active low enable for the Hot Plug I/Os.
LED0
27
LED1
30
LED2
32
LED3
33
HPL_N
31
HPLE_N
36
3.3.3 Serial ATA Signals
Signal Name
SRx+
SRx-
STx+
STx-
Pin Number(s)
7
8
11
10
Description
Receive +.
Serial receiver differential signal, positive side.
Receive -.
Serial receiver differential signal, negative side.
Transmit +.
Serial transmitter differential signal, positive side.
Transmit -.
Serial transmitter differential signal, negative side.
Crystal In.
Crystal oscillator pin for SerDes reference clock. The clock
precision recommendation is ±50ppm.
Crystal Out.
Crystal oscillator pin for SerDes reference clock. A 25MHz crystal
must be used.
XTALI
3
XTALO
2
3.3.4 NC Pins
Signal Name
NC
Pin Number(s)
34,35,38,39,40,41
43,44,45,47
Description
Do not connect.
Must leave open for normal operation