AX88172A ASIX [ASIX Electronics Corporation], AX88172A Datasheet - Page 34

• Manufacturer Part Number: AX88172A
• Description: USB 2.0 to 10/100M Fast Ethernet Controller
• Manufacturer: ASIX [ASIX Electronics Corporation]

I2C Master Controller Timing table:
Note 2: Tsys_clk =33.33ns for 30MHz operating system clock.
Fclk
Thigh
Tlow
Tsu_sta
Thd_sta Hold time of (repeated) START (S) condition. After
Tsu_dat Data Setup time.
Thd_dat Data Hold time.
Tsu_sto Data Setup time for STOP (P) condition.
Tbuf
Note 1: It will be much greater than 22us because several factors can influence this parameter such as USB system
I2C Slave Controller Timing Table:
Thd_dat Data Hold time.
Symbol
Thd_sta Hold time of (repeated) START (S) condition. After
Tsu_dat Data Setup time.
Tsu_sto Data Setup time for STOP (P) condition.
Symbol
Tsu_sta Setup time for a repeated START (Sr) condition.
Thigh High period of the I2C_SCL clock.
Tlow
Fclk
Tbuf
9.4.8 I2C Interface Timing
utilization, the CBW structure, and High/Full speed, etc.
I2C_SCL clock frequency.
Low period of the I2C_SCL clock.
this period, the first clock pulse is generated
Bus free time between a STOP and START
condition.
I2C_SCL clock frequency.
High period of the I2C_SCL clock in Fast mode.
High period of the I2C_SCL clock in Standard mode.
Low period of the I2C_SCL clock.
Setup time for a repeated START (Sr) condition.
this period, the first clock pulse is generated
Bus free time between a STOP and START condition.
Parameter
Parameter
USB 2.0 to 10/100M Fast Ethernet Controller
34
Standard
mode (Typ)
Min
0.6
4.0
0.4
0.4
100
1
3
3
1
-
-
4.0
6.0
4.0
4.0
2.0
4.0
4.0
ASIX ELECTRONICS CORPORATION
Typ
-
-
-
-
-
-
-
-
-
AX88772A/AX88172A
-
Note 1
Fast mode
(Typ)
400
1.0
1.5
1.0
1.0
0.5
1.0
1.0
Max
390
-
-
-
-
-
-
-
-
-
Low-pin-count
Tsys_clk
Tsys_clk
Tsys_clk
Tsys_clk
(Note 2)
µs
µs
µs
µs
Unit
KHz
Unit
KHz
µs
µs
µs
µs
µs
µs
µs