am79c930 Advanced Micro Devices, am79c930 Datasheet - Page 145

• Manufacturer Part Number: am79c930
• Description: Pcnet-mobile Single-chip Wireless Lan Media Access Controller
• Manufacturer: Advanced Micro Devices

3.3 V TAI INTERFACE AC CHARACTERISTICS
Notes:
1. Only applicable when TXC has been configured as an INPUT.
2. Only applicable when TXC has been configured as an OUTPUT.
3. MIN value not tested.
4. Parameter calculated from other parameters.
5. Clock period must correlate to data rate as specified in DR bits of TCR30. Note that data rate is a function of DR and T CLKIN and
6. The values for these parameters are given for the case with CLKP = 0 (TCR2[4:0]). For nonzero values of CLKP, use the
7. Values given are for data rate of 1Mb/s. For other data rates,
8. Parameter not included in the production test.
CLKGT20 bit of MIR9.
following formulas:
Parameter
Symbol
tCLTXO
tCHTXO
tTXHLO
tTXLHO
tCLKIN
tCHRX
tTXCO
tRXDS
tRXDH
tCLRX
tRXHL
tRXLH
tCLTX
tCHTX
tTXHL
tTXLH
tTXDD
tTXDS
tTXDH
tTXDV
tCHIN
If CLKGT20 = 0 (MIR9[7]),
If CLKGT20 = 1 (MIR9[7]),
tCLIN
tINHL
tINLH
tRXC
tTXC
t TXC is 1/DR, where DR = data rate in Hertz,
t CLTX is 60% of T TXC minus T TXHL ,
t CHTX is 40% of T TXC minus T TXHL ,
t TXCO is 1/DR, where DR = data rate in Hertz,
t CLTXO is 60% of T TXCO minus T TXHLO ,
t CHTXO is 40% of T TXCO minus T TXHLO ,
t TXHLO is 15 ns, regardless of DR value,
t TXLHO is 15 ns, regardless of DR value.
Parameter Description
CLKIN Period
CLKIN Low time
CLKIN High time
CLKIN Fall time
CLKIN Rise time
RXC Period
RXC Low time
RXC High time
RXC Fall time
RXC Rise time
TXC Period
TXC Low time
TXC High time
TXC Fall time
TXC Rise time
TXC Period
TXC Low time
TXC High time
TXC Fall time
TXC Rise time
RXD setup time to RXC
RXD hold time from RXC
TXD delay from TXC
TXD setup time to TXC
TXD hold time from TXC
TXD delay from TXC
t RXDS min = 110–CLKP X T CLKIN
t RXDH min = 10+CLKP X T CLKIN
t RXDS min = 110–CLKP X T CLKIN X 2
t RXDH min = 10+CLKP X T CLKIN X 2
P R E L I M I N A R Y
Am79C930
Test Conditions
Note 8
Note 8
Note 5
Note 5
Note 5
Note 8
Note 8
Notes 1, 5, 7
Notes 1, 5, 7
Notes 1, 5, 7
Notes 1, 8
Notes 1, 8
Notes 2, 7
Notes 2, 7
Notes 2, 7
Notes 2, 8
Notes 2, 8
Note 6
Note 6
Notes 1, 3
Notes 2, 4
Notes 2, 4
Notes 2, 3
TCLTX-165
TCHTX
1000
1000
1000
Min
480
480
495
495
585
385
110
50
22
22
10
10
0
Max
200
150
20
20
15
15
3
3
5
5
AMD
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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