XR21B1411IL-0A-EB Datasheet, PDF (23/30 Pages) Exar Corporation – ENHANCED 1-CH FULL-SPEED USB UART

REV. 1.2.0
RX_FIFO_LOW_LATENCY[11:1]: Reserved
XR21B1411
ENHANCED 1-CH FULL-SPEED USB UART
These bits are reserved and should remain ’0’.
3.1.1.28 WIDE_MODE (Read / Write)
WIDE_MODE[0]: EN
 Logic 0 = Normal (7, 8 or 9 bit data) mode
 Logic 1 = Wide mode - See “Section 1.3.1.1, Wide mode Transmit” on page 6, “Section 1.3.2.3, Wide
mode operation with 7 or 8-bit data” on page 6 and “Section 1.3.2.4, Wide mode operation with 9-bit
data” on page 6.
WIDE_MODE[11:1]: Reserved
These bits are reserved and should remain ’0’.
3.2 OTP Memory
The OTP on-chip memory contents are accessible via the USB interface. For details on programming the OTP
contact [e-mail]. Note that certain memory locations are pre-programmed at the factory.
Programming any of these locations or locations not documented in the data sheet may cause permanent
functional damage to the B1411 device.
TABLE 11: OTP MEMORY
ADDR
ESS
REGISTER NAME
0x00 OTP_CONFIG0
0x01 OTP_CONFIG1
0x02 OTP_CONFIG2
0x03 OTP_CONFIG3
0x04 OTP_VALID
0x05 - LINE_CODING_0 - LINE_COD-
0x0B ING_6
0x0C USB_VENDOR_ID_LSB
0xD USB_VENDOR_ID_MSB
0xE USB_PRODUCT_ID_LSB
0xF USB_PRODUCT_ID_MSB
0x10 USB_ATTRIBUTES
0x11 USB_MAXPOWER
0x12 - MANUFACTURER_STRING_0 -
0X21 MANUFACTURER_STRING_15
0X22 - PRODUCT_STRING_0 - PRO-
0X31 DUCT_STRING_15
0x32 - SERIAL_NUMBER_STRING_0 -
0X41 SERIAL_NUMBER_STRING_15
0x42 -
0x1FF
ADDRESS_VALUE
BIT-7 BIT-6 BIT-5 BIT-4 BIT-3 BIT-2 BIT-1 BIT-0
FACTORY PROGRAMMED - DO NOT OVERWRITE
LOWPOW- RESERVE
ER_POL
D
FACTORY PROGRAMMED - DO NOT OVERWRITE
FACTORY PROGRAMMED - DO NOT OVERWRITE
0
0
0
0
ENA_VBU
S_SENSE
CORE_CLOCK_DIV
0
0
0
0
0
LINE_ _STRING
CODING ^S
USB
VALUE
0
SELF-
_POW-
ERED
REMOTE_
WAKEUP
VALUE
VALUE
VALUE
VALUE
VALUE
RESERVED
VALUE
VALUE
VALUE
VALUE
23