JMicron/JM20329
6. Pin Descriptions
6.1 Pin Type Definition
Pin Type
Definition
A
D
I
Analog
Digital
Input
O
IO
L
Output
Bi-directional
Internal weak pull-low (Typical 31 KΩ)
Internal weak pull-high (Typical 31 KΩ)
H
6.2 Serial ATA Interface
Signal Name
Pin No.
Type
Description
RXP
21
AI
Serial ATA RX+ signal.
A 10nF CAP should be connected between this pin and SATA connector.
Serial ATA RX- signal.
A 10nF CAP should be connected between this pin and SATA connector.
Serial ATA TX+ signal.
A 10nF CAP should be connected between this pin and SATA connector.
Serial ATA TX- signal.
A 10nF CAP should be connected between this pin and SATA connector.
External Reference Resistance.
RXN
22
26
25
20
23
AI
AO
AO
AI
TXP
TXN
REXT
AVDDL
A 12KΩ±1% external resistor should be connected to this pin.
SATAAnalog 1.8V Power Supply.
AI
This power could be sourced from internal 1.8V voltage regulator
through AVREG pin.
AGND
AVDDH
24,19
18
AI
AI
SATAAnalog Ground.
SATAAnalog 3.3V Power Supply.
6.3 USB Interface
Signal Name
Pin No.
Type
Description
DM
DP
VBUS
14
15
8
AIO
AIO
DIL
USB Bus D- Signal.
USB Bus D+ Signal.
USB Cable Power Detector.
The 4.7KΩ and 10KΩ resistances should be connected to divide the 5V
cable power into 3.3V.
AVDDH
AGNDH
16
17
AI
AI
USB Analog 3.3V Power Supply.
USB Analog Ground.
Version 1.0
© JMicron 2007. All rights reserved.
May 2007
Copying prohibited.
Page 8
ETC [ ETC ]
