7.6.9.1 10BASE-T1S PMA Transmitter Characteristics

Table 7-16. 10BASE-T1S PMA Transmitter Electrical Characteristics
Parameter	Symbol	Min	Typ	Max	Units	Additional Information
Differential driver output	V_od	0.8	1.0	1.2	V	Figure 7-9
Cycle-to-cycle jitter	t_j(c-c)		0.65	1.2	ns	Note 1 Figure 7-9
Rise time, Fall time (20%-80%)	t_rtx, t_ftx	7.9		14.75	ns	Note 1 Figure 7-10
Droop		0		13	%	Note 1 Figure 7-9
Note: C = Characterized on samples

Figure 7-9. Differential Output Test Fixture

Figure 7-10. Transmitter Output Rise/Fall Test Fixture

Power spectral density was measured in a multidrop configuration (50 Ω termination) as shown in Figure 7-9 with the transmitter in the IEEE Transmitter PSD mask test mode 3. The upper and lower limits shown are as proposed by the OPEN Alliance TC14 10BASE-T1S System Implementation Specification, Version 1.0.

Figure 7-11. Transmitter Power Spectral Density (Typical)

LAN8670/1/2

7.6.9.1 10BASE-T1S PMA Transmitter Characteristics