MDS105 Datasheet, PDF (30/35 Pages) Zarlink Semiconductor Inc – Unmanaged 5-Port 10/100 Mbps Ethernet Switch

MDS105
Data Sheet
14.2 RMII Timing Requirements
Symbol
M1
M2
M3
M4
M5
M6
M7
Parameter
50 MHz
Min. (ns) Max. (ns)
Note
M_CLK
M[3:0]_RXD[1:0] input setup time
4
M[3:0]_RXD[1:0] input hold time
1
M[3:0]_CRS_DV input setup time
4
M[3:0]_TXEN output delay time
1
11
M[3:0]_TXD[1:0] output delay time
1
11
M[3:0]_LINK input setup time
4
Table 4 - RMII Timing Requirements
Reference Input Clock
C_L = 30 pF
C_L = 30 pF
14.3 MII Timing Requirements
Figure 6 - Transmit Timing
Symbol
Parameter
Time
Unit
Min.
Max.
1
M4_TXCLK rise to M4_TXD[3:0] inactive delay
5
20
ns
2
M4_TXCLK rise to M4_TXD[3:0] active delay
5
20
ns
3
M4_TXCLK rise to M4_TXEN active delay
5
20
ns
4
M4_TXCLK rise of last M4_TXD bit to
M4_TXEN inactive delay
5
20
ns
5
M4_TXCLK High wide
25
Inf.
ns
6
M4_TXCLK Low wide
25
Inf.
ns
M4_TXCLK input rise time require
5
ns
M4_TXCLK input fall time require
5
ns
*Inf. - infinite
Table 5 - Transmit Timing Requirements
30
Zarlink Semiconductor Inc.