JMicron/JM20329
6.4 Crystal Interface
Signal Name
Pin No.
Type
Description
Crystal Input/Oscillator Input.
XTALI
12
AI
It is connected to a 12MHz crystal or crystal oscillator.
Crystal Output.
XTALO
13
AO
It is connected to a crystal. While crystal oscillator is applied, this pin
should be reserved as No Connection (NC).
6.5 Voltage Regulator
Signal Name
Pin No.
Type
Description
AVREG
AVDDH
AGNDH
9
10
11
AO
AI
AI
Voltage Regulator 1.8V Output.
Voltage Regulator 3.3V Power Supply.
Voltage Regulator Ground.
6.6 Digital Power Supply and System Control Interface
Signal Name
Pin No.
Type
Description
VCCO
5,42
36,44
4,35,43
7
DI
DI
DI
Digital 3.3V Power Supply.
Digital 1.8V Core Power.
Digital Ground.
VCCK
DGND
RST#
DIH System Global Reset Input.
Active-low to reset the entire chip.
An external 10msec RC should be connected to this pin.
TME#
HDDA
31
33
DIH MP Test Mode Enable.
This pin is reserved for IC mass production testing.
Keep this pin to logic “1” in normal operation.
SATA Device Active.
DO
0 : Device active.
1 : IDLE.
Output to “0” in USB Suspend mode. (F)
MP TEST Mode Selection.
For IC mass production testing. We strongly recommend customer to make
TEST[2:0] = 000.
TEST[2:0]
GPIO[0]
3,41,45
30
DIL
DIL
DIL
Input in USB Suspend mode
DIOH ATA/ATAPI Power Down Mode Enable/EEPROM 9346 Data Output
(DO) GPIO0
(1) At Power on MCU will detect this pin.
0: Enable MCU issue spin down command to HDD in suspend mode.
1: Disable MCU issue spin down command to HDD in suspend mode.
(2) After power on status detecting, this pin becomes Data Output of serial
EEPROM 9346.
(3) While EEPROM detection is complete, this pin is default set to input, and
could act as GPIO pin by SCSI-2 vender command (button input).
Input in USB Suspend mode(F)
Version 1.0
© JMicron 2007. All rights reserved.
May 2007
Copying prohibited.
Page 9
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