EVB9512 SMSC, EVB9512 Datasheet - Page 58

• Manufacturer Part Number: EVB9512
• Description: EVALUATION BOARD FOR LAN9512
• Manufacturer: SMSC

Specifications of EVB9512

• Main Purpose: Interface, Ethernet Controller (PHY and MAC)
• Embedded: No
• Utilized Ic / Part: LAN9512
• Primary Attributes: Single Chip Hi-Speed USB to 10/100 Ethernet
• Secondary Attributes: Full Duplex and HP Auto-MDIX Support, 10BASE-T and 100BASE-TX
• Other names: 638-1093; EVB9512LC

Revision 1.1 (04-26-10)
8.7.1.2
RESET_N
NAME
NAME
t1
t2
t3
t4
t5
t6
t7
t8
t1
t2
t3
t4
VSS
Hardware
asserted
reset
RESET_N Asserted.
Strap Setup Time
Strap Hold Time.
hub outputs driven to inactive logic states
USB Attach (See Note).
Host acknowledges attach and signals USB
Reset.
USB Idle.
Completion time for requests (with or without data
stage).
RESET_N Asserted.
Hub Recovery/Stabilization.
EEPROM Read / Hub Config.
USB Attach (See Note).
Notes:
RESET_N for EEPROM Configuration
When in bus-powered mode, the hub and its associated circuitry must not consume more than 100
mA from the upstream USB power source during t1+t5.
All power supplies must have reached the operating levels mandated in
prior to (or coincident with) the assertion of RESET_N.
Read Strap
t1
Options
Table 8.8 Reset_N Timing for Default/Strap Option Mode
DESCRIPTION
DESCRIPTION
Figure 8.7 Reset_N Timing for EEPROM Mode
Table 8.9 Reset_N Timing for EEPROM Mode
Read EEPROM
Set Options
t2
+
DATASHEET
t4
t3
58
Upstream
Attach
USB
16.7
16.7
MIN
MIN
100
1
1
USB Reset
recovery
t5
undefined
TYP
TYP
1.5
2.0
USB 2.0 Hi-Speed Hub Controller
Chapter 9, DC
t6
Idle
MAX
1400
MAX
99.5
100
500
100
2
5
t7
SMSC USB251x
completion
response
request
Parameters,
Start
UNITS
UNITS
Datasheet
msec
msec
msec
msec
msec
msec
μsec
nsec
nsec
μsec
μsec
μsec