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USB2503 データシート(PDF) 19 Page - SMSC Corporation

部品番号 USB2503
部品情報  USB 2.0 High-Speed 4-Port Hub Controller
PDF  46 Pages
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メーカー  SMSC [SMSC Corporation]
ホームページ  http://www.smsc.com
Logo SMSC - SMSC Corporation

USB2503 データシート(HTML) 19 Page - SMSC Corporation

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USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
SMSC USB2514
19
Revision 1.92 (05-08-07)
DATASHEET
4.3
EEPROM Interface
The SMSC Hub can be configured via a 2-wire (I2C) EEPROM (256x8). (Please see Table 3.1 for
specific details on how to enable configuration via an I2C EEPROM).
The Internal state-machine will (when configured for EEPROM support) read the external EEPROM for
configuration data. The hub will then “attach” to the upstream USB host.
Note: The Hub does not have the capacity to write, or “Program,” an external EEPROM. The Hub
only has the capability to read external EEPROMs. The external eeprom will be read (even if
it is blank or non-populated), and the hub will be “configured” with the values that are read.
Please see Internal Register Set (Common to EEPROM and SMBus) for a list of data fields available.
4.3.1
Internal Register Set (Common to EEPROM and SMBus)
Table 4.2 Internal EEPROM and SMBus Register Memory Map
REG ADDR
R/W
REGISTER NAME
ABBR
DEFAULT ROM
00h
R/W
VID LSB
VIDL
24h
01h
R/W
VID MSB
VIDM
04h
02h
R/W
PID LSB
PIDL
14h
03h
R/W
PID MSB
PIDM
25h
04h
R/W
DID LSB
DIDL
00h
05h
R/W
DID MSB
DIDM
00h
06h
R/W
Config Data Byte 1
CFG1
9Bh
07h
R/W
Config Data Byte 2
CFG2
10h
08h
R/W
Config Data Byte 3
CFG3
00h
09h
R/W
Non-Removable Devices
NRD
00h
0Ah
R/W
Port Disable (Self)
PDS
00h
0Bh
R/W
Port Disable (Bus)
PDB
00h
0Ch
R/W
Max Power (Self)
MAXPS
01h
0Dh
R/W
Max Power (Bus)
MAXPB
64h
0Eh
R/W
Hub Controller Max Current (Self)
HCMCS
01h
0Fh
R/W
Hub Controller Max Current (Bus)
HCMCB
64h
10h
R/W
Power-on Time
PWRT
32h
11h
R/W
LANG_ID_H
LANGIDH
00h
12h
R/W
LANG_ID_L
LANGIDL
00h
13h
R/W
MFR_STR_LEN
MFRSL
00h
14h
R/W
PRD_STR_LEN
PRDSL
00h
15h
R/W
SER_STR_LEN
SERSL
00h
16h-53h
R/W
MFR_STR
MANSTR
00h



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