Tbi Timing - Realtek RTL8169 Manual

11.3.6 TBI Timing

tRC
GTxCLK
Tx[9:0]
RxCLK0
Rx[9:0]
RxCLK1
Symbol
tTxCC Tx Clock Cycle
fGTxCLK GTxCLK frequency
tRC Clock Rise Time of GTxCLK,
RxCLK0, RxCLK1
tFC Clock Fall Time of GTxCLK,
RxCLK0, RxCLK1
tDUTY Clock Duty Cycle of GTxCLK,
RxCLK0, RxCLK1
Data Setup to ↑ of GTxCLK
tTxSU
Data Hold from ↑ of GTxCLK
tTxHT
tRD Data Rise Time of Tx[9:0],
Rx[9:0]
rFD Data Fall Time of Tx[9:0],
Rx[9:0]
fRxCLKx RxCLK0, RxCLK1 frequency
tDRIFT RxCLK0/1 Drift Rate
Data Setup to ↑ of RxCLK0/1
tRxSU
Data Hold after ↑ of RxCLK0/1
tRxHT
tA-B TBI RxCLK Skew
2002/03/27
tTxCC
tRD
tFD
TBI Tx Timing
tA-B
tRxSU
tRxHT
TBI Rx Timing
Description
125 – 100ppm
TBI Timing Parameters
tFC
tTxSU tTxHT
Valid Data
tRxSU
tRxHT
Min Typical
8
125
0.7
0.7
40
2.0
1.0
0.7
0.7
62.5
0.2
2.5
1.5
7.5
90
RTL8169
2.0V
1.4V
0.8V
2.0V
0.8V
1.4V
2.0V
0.8V
1.4V
Max Units
ns
125 + 100ppm MHz
2.4 ns
2.4 ns
60 %
ns
ns
ns
ns
MHz
us/MHz
ns
ns
8.5 ns
Rev.1.21