USB251xB/xBi
5.1.21 REGISTER 14H: PRODUCT STRING LENGTH
Bit Number
7:0
Bit Name
PRD_STR_LEN
Description
Product String Length: with a maximum string length of 31 characters (when
supported).
5.1.22 REGISTER 15H: SERIAL STRING LENGTH
Bit Number
7:0
Bit Name
SER_STR_LEN
Description
Serial String Length: with a maximum string length of 31 characters (when
supported).
5.1.23 REGISTER 16H-53H: MANUFACTURER STRING
Bit Number
7:0
Bit Name
MFR_STR
Description
Manufacturer String: UNICODE UTF-16LE per USB 2.0 Specification: with a
maximum string length of 31 characters (when supported).
Note: The string consists of individual 16-bit UNICODE UTF-16LE
characters. The characters will be stored starting with the LSB at the
least significant address and the MSB at the next 8-bit location.
(Subsequent characters must be stored in sequential contiguous
addresses in the same LSB, MSB manner.)
Warning: Close attention to the byte order of the selected programming tool
should be monitored.
5.1.24 REGISTER 54H-91H: PRODUCT STRING
Bit Number
7:0
Bit Name
PRD_STR
Description
Product String: UNICODE UTF-16LE per USB 2.0 Specification
When supported, the maximum string length is 31 characters (62 bytes).
Note: The string consists of individual 16-bit UNICODE UTF-16LE
characters. The characters will be stored starting with the LSB at the
least significant address and the MSB at the next 8-bit location.
(Subsequent characters must be stored in sequential contiguous
address in the same LSB, MSB manner.)
Warning: Close attention to the byte order of the selected programming tool
should be monitored.
5.1.25 REGISTER 92H-CFH: SERIAL STRING
Bit Number
7:0
Bit Name
SER_STR
Description
Serial String: UNICODE UTF-16LE per USB 2.0 specification
When supported, the maximum string length is 31 characters (62 bytes).
Note: The string consists of individual 16-bit UNICODE UTF-16LE
characters. The characters will be stored starting with the LSB at the
least significant address and the MSB at the next 8-bit location.
(Subsequent characters must be stored in sequential contiguous
address in the same LSB, MSB manner.)
Warning: Close attention to the byte order of the selected programming tool
should be monitored.
2010 - 2015 Microchip Technology Inc.
DS00001692C-page 27