Data Sheet

FLC-BTM901 Datasheet
Flaircomm Microelectronics,Inc. - 36-
LED_PWM
Number
PIO
LED_PWM[0]
PIO[0] PIO[6] — PIO[18] — — — — — — — PIO[66]
LED_PWM[1]
PIO[1] PIO[7] — PIO[19] — — — — — — — PIO[67]
LED_PWM[2]
PIO[2] PIO[8]
—
PIO[20]
— — — — — — —
PIO[68]
LED_PWM[4]
PIO[4] — PIO[16] — — — — — — — — PIO[70]
LED_PWM[5]
PIO[5]
—
PIO[17]
— — — — — — — —
PIO[71]
Table 9: LED Controller Pattern
NOTE Not all PIOs may be usable with the PWM generator due to other functions
being assigned by an OEM.
Table 10 shows how each LED_PWM maps to a specific PIO and LED_PAD on BTM901.
LED_PWM Number = PIO Number = LED_PAD Number
LED_PWM[0]
= PIO[66] = LED_PAD[0]]
LED_PWM[1]
= PIO[67] = LED_PAD[1]
LED_PWM[2]
= PIO[68] = LED_PAD[2]
LED_PWM[04]
= PIO[70] = LED_PAD[4]
LED_PWM[05]
= PIO[71] = LED_PAD[5]
Table 10: LED_PWM to PIO to LED_PAD Mapping
12.8 USB Interface
BTM901 has a USB device interface: An upstream port, for connection to a host
Phone/PC or battery charging adaptor.
12.8.1 USB Device Port
The device port is a USB2.0 Full Speed (12 Mb/s) port. Typically BTM901 enumerates as
a compound device with a hub with the enabled audio source / sink / HID / mass storage
device appearing behind this hub.
The DP 1.5 k pull-up is integrated in BTM901. No series resistors are required on the
USB data lines. BTM901 contains integrated ESD protection on the data lines to IEC
61000-4-2 (device level). In normal applications, no external ESD protection is required.
Extra ESD protection is not required on VCHG (VBUS) because BTM901 meets the USB
certification requirements of a minimum of 1uF, and a maximum of 10 µF being present
on VCHG (VBUS).
The VCHG input of BTM901 is tolerant of a constant 6.5 V and transients up to 7.0 V. If
extra overvoltage protection is required, external clamping protection devices can be
used.