ICS1894-32
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE PHYCEIVER
IDT®
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE 40
ICS1894-32 REV M 021512
100M / MII Media Independent Interface: Transmit Latency
The table below lists the significant time periods for the MII/100 Stream Interface transmit latency. The time periods
consist of timings of signals on the following pins:
TXEN
TXCLK
TXD (that is, TXD[3:0])
TP_TX (that is, TP_TXP and TP_TXN)
The MII/100M Stream Interface Transmit Latency Timing Diagram shows the timing diagram for the time periods.
The IEEE maximum is 18 bit times.
MII/100M Stream Interface Transmit Latency Timing Diagram
Time
Period
Parameter Conditions Min. Typ. Max. Units
t1 TXEN Sampled to MDI Output of First
Bit of /J/ †
MII mode 2.8 3 Bit times
ICS1894-32
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE PHYCEIVER
IDT®
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE 41
ICS1894-32 REV M 021512
10M MII: Carrier Assertion/De-Assertion (Half-Duplex Transmission)
The table below lists the significant time periods for the 10M MII carrier assertion/de-assertion during half-duplex
transmission. The time periods consist of timings of signals on the following pins:
TXEN
TXCLK
CRS
The 10M MII Carrier Assertion/De-Assertion Timing Diagram (Half-Duplex Transmission Only) shows the timing diagram for
the time periods.
10M MII Carrier Assertion/De-Assertion Timing Diagram (Half-Duplex Transmission Only)
Time
Period
Parameter Conditions Min. Typ. Max. Units
t1 TXEN Asserted to CRS Assert 0 2 Bit times
t2 TXEN De-Asserted to CRS De-Asserted 0 2 4 Bit times
ICS1894-32
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE PHYCEIVER
IDT®
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE 42
ICS1894-32 REV M 021512
100M MII Media Independent Interface: Receive Latency
The table below lists the significant time periods for the 100M MII/100M Stream Interface receive latency. The time
periods consist of timings of signals on the following pins:
TP_RX (that is, TP_RXP and TP_RXN)
RXCLK
RXD (that is, RXD[3:0])
The 100M MII/100M Stream Interface: Receive Latency Timing Diagram shows the timing diagram for the time
periods.
100M MII/100M Stream Interface: Receive Latency Timing Diagram
Reset: Power-On Reset
The table below lists the significant time periods for the power-on reset. The time periods consist of timings of
signals on the following pins:
VDD
TXCLK
The Power-On Reset Timing Diagram shows the timing diagram for the time periods.
Time
Period
Parameter Conditions Min. Typ. Max. Units
t1 First Bit of /J/ into TP_RX to /J/ on RXD 100M MII 16 17 Bit times
Time
Period
Parameter Conditions Min. Typ. Max. Units
t1 VDD 2.7 V to Reset Complete 40 45 500 ms

1894K-32LF

Mfr. #:
Manufacturer:
IDT
Description:
Ethernet ICs 3.3V 10/100 PHY RMII
Lifecycle:
New from this manufacturer.
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