isp1301 NXP Semiconductors, isp1301 Datasheet - Page 10

• Manufacturer Part Number: isp1301
• Description: Universal Serial Bus On-the-go Transceiver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
ISP1301_3
Product data sheet
7.10.2 SCL and SDA
7.10.3 RESET_N
7.10.4 INT_N
7.10.5 OE_N/INT_N
7.10.6 SE0/VM, DAT/VP, RCV, VM and VP
The SCL (serial clock) and SDA (serial data) signals implement a two-wire serial I
Active LOW asynchronous reset for all digital logic. Either connect this pin to V
power-on reset or apply a minimum of 10 s LOW pulse for hardware reset.
The INT_N (interrupt) pin is asserted while an interrupt condition exists. It is de-asserted
when the Interrupt Latch register is cleared. The INT_N pin is open-drain, and, therefore,
can be connected using a wired-AND with other interrupt signals.
Pin OE_N/INT_N is normally an input to the ISP1301.
When bit TRANSP_EN = 0 and bit UART_EN = 0, the OE_N/INT_N pin controls the
direction of DAT/VP, SE0/VM, DP and DM as indicated in
When suspended (either pin SUSPEND = HIGH or bit SUSPEND_REG = 1) and bit
OE_INT_EN = 1, pin OE_N/INT_N becomes a push-pull output (active LOW) to indicate
the interrupt condition.
The ISP1301 transmits USB data on the USB line under the following conditions:
Table 10
operation. The RCV pin is not used during transmit.
The ISP1301 receives USB data from the USB line under the following conditions:
Fig 5. Using external charge pump
•
•
•
Bit TRANSP_EN = 0
Bit UART_EN = 0
Pin OE_N/INT_N = LOW
ISP1301BS
shows the operation of the SE0/VM and DAT/VP pins during the transmit
ADR/PSW
V
BUS
Rev. 03 — 21 February 2006
+3.3 V
100 k
V
CC
CHARGE PUMP
ON/OFF
V
IN
V
OUT
Table
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
4.
4.7 F
USB OTG transceiver
ISP1301
V
DM
ID
DP
GND
BUS
004aaa437
CC(I/O)
2
C-bus.
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