XR21V1414IM48-F Exar Corporation, XR21V1414IM48-F Datasheet - Page 10

• Manufacturer Part Number: XR21V1414IM48-F
• Description: IC UART FIFO USB QUAD 48TQFP
• Manufacturer: Exar Corporation
• Type: USB UARTsr

Specifications of XR21V1414IM48-F

• Package / Case: 48-TQFP
• Features: *
• Number Of Channels: 1, UART
• Fifo's: 128 Byte
• Protocol: USB 2.0
• Voltage - Supply: 3.3V
• With Auto Flow Control: Yes
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Current: 16 mA
• Operating Supply Voltage: 2.97 V to 3.63 V
• No. Of Channels: 4
• Data Rate: 12Mbps
• Uart Features: Automatic Hardware And Software Flow Control, Half-Duplex Mode, Fractional Baud Rate Generator
• Supply Voltage Range: 2.97V To 3.63V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 1016-1303 - EVAL BOARD FOR XR21V1414IM
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 1016-1304

XR21V1414
4-CH FULL-SPEED USB UART
The I2C interface provides connectivity to an external I2C memory device (i.e. EEPROM) that can be read by
the V1414 for configuration.
The SDA and SCL are used to specify whether Remote Wakeup and/or Bus Powered configurations are to be
supported. These pins are sampled at power-up. The following table describes how Remote Wakeup and Bus
Powered support.
The I2C address should be 0xA0. An EEPROM can be used to override default Vendor IDs and Device IDs, as
well as other attributes and maximum power consumption. The EEPROM must contain 8 bytes of data as
specified in
These values are uploaded from the EEPROM to the corresponding USB Standard Device Descriptor or
Standard Configuration Descriptor. For details of the USB Descriptors, refer to the USB 2.0 specifications.
The Vendor ID value replaces the idVendor field in the USB Standard Device Descriptor.
The Product ID value replaces the idProduct field in the USB Standard Device Descriptor.
The Device Attributes value replaces the bmAttributes field in the USB Standard Configuration Descriptor. The
default setting in the V1414 device is 0xA0. The bit field definitions are:
1.3
1.3.1
1.3.1.1
1.3.1.2
1.3.1.3
EEPROM
Bit 7 is reserved - set to ’1’
A
DDRESS
0
1
2
3
4
5
6
7
I2C Interface
EEPROM Contents
Table 3
Vendor ID
Product ID
Device Attributes
Signature of 0x58 (’X’). If the signature is not correct, the contents of the EEPROM are ignored.
SDA
1
1
0
0
T
ABLE
2: R
SCL
1
0
1
0
T
ABLE
EMOTE
3: EEPROM C
W
Device Maximum Power
R
AKEUP AND
EMOTE
Product ID (MSB)
Vendor ID (MSB)
Product ID (LSB)
Device Attributes
Vendor ID (LSB)
10
S
UPPORT
C
Reserved
Yes
Yes
No
No
ONTENTS
W
AKE
ONTENTS
P
-
UP
OWER
M
ODES
P
Self-Powered
Bus-Powered
Self-Powered
Bus-Powered
OWER
M
ODE
REV. 1.1.0