Datasheet

TUSB1310A
SLLSE32E –NOVEMBER 2010–REVISED JULY 2012 www.ti.com
Table 2-8. Strapping Options (continued)
SIGNAL NAME TYPE BALL NO. DESCRIPTION
Active High. Puts PIPE into isolate mode. When in the isolate mode, TUSB1310A does
not respond to packet data present at TX_DATA15-0, TXDATAK1-0 inputs and presents
a high impedance on the PCLK, RX_DATA15-0, RX_DATAK1-0, RX_VALID outputs.
ISO_START
S, I/O, PD N6 When in the isolate mode, the TUSB1310A will continue to respond to ULPI. Once the
(ULPI_DATA7)
isolate mode bit in ULPI register is cleared, the USB interfaces will start transmitting
packet data on TX_DATA15-0 and driving PCLK, RX_DATA15-0, RX_DATA1-0, and
RX_VALID.
Selects ULPI data bus bit width
ULPI_8BIT
S, I/O, PD P6 0 8-bit ULPI SDR mode
(ULPI_DATA6)
Must be set to 0.
Select input reference clock frequency for on-chip oscillator
REFCLKSEL1,
00 20 MHz on XI
REFCLKSEL0 N7
S, I/O, PD 01 25 MHz on XI
(ULPI_DATA5, P7
10 30 MHz on XI
ULPI_DATA4)
11 40 MHz on XI
2.8 USB Interfaces
Table 2-9. USB Interface Signal Name Descriptions
SIGNAL NAME TYPE BALL NO. DESCRIPTION
SSTXP H14
O USB SuperSpeed transmitter differential pair
SSTXM J14
SSRXP E14
I USB SuperSpeed receiver differential pair
SSRXM F14
DP P14
I/O USB non-SuperSpeed differential pair
DM P13
USB VBUS pin
VBUS I N12
Connected through an external voltage divider.
2.9 Special Connect
Table 2-10. Special Connect Signal Descriptions
SIGNAL NAME TYPE BALL NO. DESCRIPTION
High precision external resistor used for calibration. The R1 value shall be 10 kΩ ±1%
R1EXT O L14
accuracy.
R1EXTRTN I L13 R1 ground reference. This pin is not connected to board ground.
VDDA1P1 P M14 Needs a 1-µF bypass capacitor
D6
D5
C13
RSVD I/O C14 Must be left open.
K4
J4
A14
14 PIN DESCRIPTIONS Copyright © 2010–2012, Texas Instruments Incorporated
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