參數(shù)資料
型號(hào)： TMS320DM355_07
廠商： Texas Instruments, Inc.
英文描述： Digital Media System-on-Chip (DMSoC)
中文描述： 數(shù)字媒體系統(tǒng)芯片（DMSoC）
文件頁數(shù)： 29/158頁
文件大?。?/td> 1319K
代理商： TMS320DM355_07
www.ti.com
P
2.4.7
Universal Serial Bus (USB) Interface
2.4.8
Audio Interfaces
TMS320DM355
Digital Media System-on-Chip (DMSoC)
SPRS463B–SEPTEMBER 2007–REVISED OCTOBER 2007
The Universal Serial Bus (USB) interface supports the USB2.0 High-Speed protocol and includes dual-role
Host/Slave support. However, no charge pump is included.
Table 2-13. USB Terminal Functions
TERMINAL
TYPE
(1)
OTHER
(2)(3)
DESCRIPTION
NAME
NO.
USB D+ (differential signal pair).
When USB is not used, this signal should be connected to V
SS_USB
.
USB D- (differential signal pair).
When USB is not used, this signal should be connected to V
SS_USB
.
USB reference current output
Connect to V
SS_USB_REF
via 10K ohm , 1% resistor placed as close to the device
as possible.
When USB is not used, this signal should be connected to V
SS_USB
.
USB operating mode identification pin
For Device mode operation only, pull up this pin to V
with a 1.5K ohm resistor.
For Host mode operation only, pull down this pin to ground (V
SS
) with a 1.5K ohm
resistor.
If using an OTG or mini-USB connector, this pin will be set properly via the
cable/connector configuration.
When USB is not used, this signal should be connected to V
SS_USB
.
For host or device mode operation, tie the VBUS/USB power signal to the USB
connector.
When used in OTG mode operation, tie VBUS to the external charge pump and
to the VBUS signal on the USB connector.
When the USB is not used, tie VBUS to V
SS_USB
.
Digital output to control external 5 V supply
When USB is not used, this signal should be left as a No Connect.
USB Ground Reference
Connect directly to ground and to USB_R1 via 10K ohm, 1% resistor placed as
close to the device as possible.
Analog 3.3 V power USBPHY
When USB is not used, this signal should be connected to V
SS_USB
.
Common mode 3.3 V power for USB PHY (PLL)
When USB is not used, this signal should be connected to V
SS_USB
.
Analog 1.3 V power for USB PHY
When USB is not used, this signal should be connected to V
SS_USB
.
Digital 1.3 V power for USB PHY
When USB is not used, this signal should be connected to V
SS_USB
.
USB_DP
A7
A I/O/Z
V
DDA33_USB
USB_DM
A6
A I/O/Z
V
DDA33_USB
USB_R1
C7
A I/O/Z
USB_ID
D5
A I/O/Z
V
DDA33_USB
USB_VBUS
E5
A I/O/Z
V
DD
USB_DRVVBUS
C5
O/Z
V
DD
V
SS_USB_REF
C8
GND
V
DD
V
DDA33_USB
J8
PWR
V
DD
V
DDA33_USB_PLL
B6
PWR
V
DD
V
DDA13_USB
H7
PWR
V
DD
V
DDD13_USB
C6
PWR
V
DD
(1)
(2)
(3)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal.
Specifies the operating I/O supply voltage for each signal. See
Section 5.3
, Power Supplies
for more detail.
PD = pull-down, PU = pull-up. (To pull up a signal to the opposite supply rail, a 1 k
resistor should be used.)
The DM355 includes two Audio Serial Ports (ASP ports), which are backward compatible with other TI
ASP serial ports and provide I2S audio interface. One interface is multiplexed with GIO signals.
Table 2-14. ASP Terminal Functions
TERMINAL
TYPE
(1)
OTHER
(2)(3)
DESCRIPTION
NAME
ASP0_CL
KR/
GIO026
NO.
ASP0: Receive Clock
GIO: GIO[026]
F17
I/O/Z
V
DD
(1)
(2)
(3)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal.
Specifies the operating I/O supply voltage for each signal. See
Section 5.3
,
Power Supplies
for more detail.
PD = pull-down, PU = pull-up. (To pull up a signal to the opposite supply rail, a 1 k
resistor should be used.)
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