![background image](http://html.mh-extra.com/html/sony/hcd-gtx999/hcd-gtx999_service-manual_420755058.webp)
HCD-GTX999
58
USB MICOM BOARD IC9 JM20339-LGCA0C (HARD DISK DRIVER)
Pin No.
Pin Name
I/O
Description
1 to 3
GPIO21 to GPIO23
-
Not used
4
MODE2
-
Not used
5, 6
NC
-
Not used
7
DGND
-
Ground terminal
8
VCCO
-
Power supply terminal (+3.3V)
9, 10
NC
-
Not used
11
GPIO7
-
Not used
12
RST#
I
Reset signal input from the USB system controller "L": reset
13
VBUS
I
VBUS voltage detect signal input from the USB 2.0 hub controller
14
AVREG
O
Power supply voltage (+1.8V) output terminal
15
AVDDH
-
Power supply terminal (+3.3V)
16
AGNDH
-
Ground terminal
17
XTALI
I
System clock (12 MHz) input terminal
18
XTALO
O
System clock (12 MHz) output terminal
19, 20
DM, DP
I/O
Audio serial data input/output with the USB 2.0 hub controller
21
AVDDH
-
Power supply terminal (+3.3V)
22
AGNDH
-
Ground terminal
23
NC
-
Not used
24
AVDDH
-
Power supply terminal (+3.3V)
25
AGND
-
Ground terminal
26
REXT
-
Not used
27, 28
RXP, RXN
O
Audio serial data output to the hard disk drive
29
AVDDL
-
Power supply terminal (+1.8V)
30
AGND
-
Ground terminal
31, 32
TXN, TXP
I
Audio serial data input from the hard disk drive
33 to 36
GPIO3 to GPIO0
-
Not used
37
TME#
-
Not used
38
PHYRDY
-
Not used
39
HDDA
-
Not used
40
GPIO4
-
Not used
41
DGND
-
Ground terminal
42
VCCK
-
Power supply terminal (+1.8V)
43 to 52
GPIO5, GPIO6, GPIO9
to GPIO15, GPIO8
-
Not used
53, 54
UAI, UAO
-
Not used
55
MODE1
-
Not used
56
VCCO
-
Power supply terminal (+3.3V)
57
DGND
-
Ground terminal
Power supply terminal (+1.8V)
Not used
Not used
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299