TC290 Datasheet, PDF (429/476 Pages) Infineon Technologies AG – 32-Bit Single-Chip Micocontroller

TC290 / TC297 / TC298 / TC299 BB-Step
Electrical SpecificationEthernet Interface (ETH) Characteristics
3.28.4 ETH RMII Parameters
In the following, the parameters of the RMII (Reduced Media Independent Interface) are described.
Table 3-85 ETH RMII Signal Timing Parameters
Parameter
Symbol
Min.
ETH_RMII_REF_CL clock
t₁₃ CC
20
period
ETH_RMII_REF_CL clock high t₁₄ CC
7 ¹⁾
time
ETH_RMII_REF_CL clock low t₁₅ CC
7 ¹⁾
time
ETHTXEN, ETHTXD[1:0],
t₁₆ CC
4
ETHRXD[1:0], ETHCRSDV,
ETHRXER; setup time
ETHTXEN, ETHTXD[1:0],
t₁₇ CC
2
ETHRXD[1:0], ETHCRSDV,
ETHRXER; hold time
1) Defined by 35% of clock period.
2) Defined by 65% of clock period.
Values
Typ.
-
Max.
-
-
13 ²⁾
-
13 ²⁾
-
-
-
-
Unit Note / Test Condition
ns
C_L=25pF; 50ppm
ns
C_L=25pF
ns
C_L=25pF
ns
C_L=25pF
ns
C_L=25pF
ETH_RMII_REF_CL
t_{1 3}
t_{1 5}
t₁₄
ETH_RMII_REF_CL
ETHTXEN,
ETHTXD[1:0],
ETHRXD[1:0],
ETHCRSDV,
ETHRXER
Figure 3-28 ETH RMII Signal Timing
t_{1 6}
t₁₇
Valid Data
ETH_Timing-RMII .vsd
Data Sheet
3-423
V 1.1 2015-05
TC290/TC297/TC298/TC299 BB-Step Data Sheet downloaded by saravanakumar maniyam (larsen and Toubro limited) at 08 Sep 2015 08:06