OTi 6888 Schematic [ru]
OTi
Ours Technology Inc.
OTi-6888
USB 1.1 USB Host with MP3 Interface Controller
DESCRIPTION
The OTi-6888 is a USB host with MP3 interface controller. User can stores the mp3 file
in the USB device (USB flash disk , USB card reader and USB portable hard Disk). When
the USB device plug in USB port and push the play key. The OTi6888 will read the mp3 file
from USB device, and send the data to MP3 decoder and DAC. The user can hear MP3 song
where stores in USB device.
The USB interfaces are for full speed operation (12Mb/s). It conforms to USB
Specification, Version 1.1. The USB transceiver is embedded in this controller. With stable
slew-rate control, the controller reduces EMI.
The OTi-6888 has a Phase Lock Loop (PLL) embedded. The PLL provides all clocks
needed in this controller. It needs an externally provided clock operating in 14.318MHz.
The controller has two LED control pin.
FEATURES
♦ The host controller conforms to Full-speed (12Mb/s) USB Specification, Version
1.1
♦
Supports the USB flash disk device(Version 1.1 or 2.0) with Mass storage class
♦
Supports the USB card reader device(Version 1.1 or 2.0) with Mass storage class
♦
Supports the USB portable hard disk(Version 1.1 or 2.0) with Mass storage class
♦ Integrated USB transceiver
♦ Integrated RISC micro-controller
— High-performance RISC architecture
— Single cycle instruction execution
♦ 14.318 MHz external clock
♦ 3.3 V power operation
♦ Integrated PLL
♦ Small form factor - standard 48-pin LQFP (7mmX7mm) package
♦ Supports File System including FAT12、FAT16、FAT32
♦ Search for whole disk (MP3 File)
♦ Input button for Play (Pause), Previous, Next , Volume + and Volume –
- 1 - Our Technologies are Yours!
SPE. 15, 2003 Rev.A.1
OTi
Ours Technology Inc.
USB 1.1 USB Host with MP3 Interface Controller
BLOCK DIAGARAM
14.318MHz
OTi-6888
Input
Button
PLL
RISC
Program
RAM
Clock Divider
UHC
Interrupt
LED
USB
Transceirver
I2V
Bit Stream
D+
D-
USB
device
DAC
MP3
decoder
LED1~2
- 2 - Our Technologies are Yours!
SPE. 15, 2003 Rev.A.1
OTi
Ours Technology Inc.
USB 1.1 USB Host with MP3 Interface Controller
PIN CONFIGUARTION
GPIOB[3]
ext_int5
47
48
OTi-6888
DMNS_IO
GPIOB[1]
46
gnd
45
DPLS_IO
REQ
SID
vdd
NC
40
41
42
43
44
SIC
NC
37
38
39
GPIOA[7]
GPIOA[6]
NC
NC
NC
NC
gnd
vdd
LED1_out
NC
GPIOA[5]
GPIOA[4]
1
2
3
4
5
6
7
8
9
10
11
12
15
14
13
NC
GPIOA[2]
GPIOA[3]
LQFP-48
17
16
NC
NC
22
21
20
19
18
NC
NC
NC
vdd
gnd
36
35
34
33
32
31
30
29
28
27
26
25
24
23
GPIOA[0]
GPIOA[1]
GPIOB[2]
NC
GPIOB[0]
sda
scl
NC
vdd
xtal2
xtal1
gnd
reset_b
NC
- 3 - Our Technologies are Yours!
SPE. 15, 2003 Rev.A.1
OTi
Ours Technology Inc.
OTi-6888
USB 1.1 USB Host with MP3 Interface Controller
ex_romdata[5]
ex_romdata[6]
GPIOA[7]
GPIOA[6]
gnd
vdd
LED1_out
GPIOA[5]
GPIOA[4]
ex_romaddr[12]
ex_romaddr[11]
ex_romaddr[10]
ex_romaddr[9]
gnd
vdd
ex_romaddr[8] 16
ex_romaddr[15]
ex_romaddr[14]
ex_romaddr[13] 64
63
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
18
17
host_dev_sel
gnd
60
61
62
GPIOB[1]
59
DMNS_IO
DPLS_IO
REQ
SID
gnd
58
vdd
53
54
55
56
57
LQFP-64
28
27
26
25
24
23
22
21
20
19
ex_romdata[6]
SIC
51
52
293031
ex_romdata[7]
txd1
49
50
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
ex_romaddr[0]48
ex_romaddr[1]
gnd
sda
scl
vdd
xtal2
xtal1
gnd
reset_b
mode0
ex_romdata[0]
ex_romdata[1]
ex_romaddr[2]
ex_romaddr[3]
rxdi1
ex_romdata[3]
vdd
ex_romaddr[6]
ex_romaddr[5]
ex_romaddr[4]32
gnd
ex_romaddr[7]
GPIOA[0]
GPIOA[1]
vdd
gnd
GPIOA[2]
GPIOA[3]
GPIOB[4]
GPIOB[6]
ex_romdata[2]
- 4 - Our Technologies are Yours!
SPE. 15, 2003 Rev.A.1
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