Datasheet
Electrical characteristics STM32H743xI
194/226 DocID030538 Rev 3
Figure 61. Ethernet MII timing diagram
6.3.33 JTAG/SWD interface characteristics
Unless otherwise specified, the parameters given in Table 113 and Table 114 for JTAG/SWD
are derived from tests performed under the ambient temperature, f
rcc_c_ck
frequency and
V
DD
supply voltage summarized in Table 23: General operating conditions, with the
following configuration:
• Output speed
is set to OSPEEDRy[1:0] = 0x10
• Capacitive load C=30 pF
• Measurement points are done at CMOS levels: 0.5V
DD
Refer to Section 6.3.15: I/O port characteristics for more details on the input/output
characteristics.
Table 112. Dynamics characteristics:
Ethernet MAC signals for MII
(1)
1. Guaranteed by characterization results.
Symbol Parameter Min Typ Max Unit
t
su(RXD)
Receive data setup time 2 - -
ns
t
ih(RXD)
Receive data hold time 3 - -
t
su(DV)
Data valid setup time 1.5 - -
t
ih(DV)
Data valid hold time 1 - -
t
su(ER)
Error setup time 1.5 - -
t
ih(ER)
Error hold time 0.5 - -
t
d(TXEN)
Transmit enable valid delay time 4.5 6.5 11
t
d(TXD)
Transmit data valid delay time 7 7.5 15
ai15668b
MII_RX_CLK
MII_RXD[3:0]
MII_RX_DV
MII_RX_ER
t
d(TXEN)
t
d(TXD)
t
su(RXD)
t
su(ER)
t
su(DV)
t
ih(RXD)
t
ih(ER)
t
ih(DV)
MII_TX_CLK
MII_TX_EN
MII_TXD[3:0]
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