Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
8.3.3
SGMII Transmitter and Receiver DC Electrical Characteristics
Table 37 and Table 38 describe the SGMII SerDes transmitter and receiver AC-Coupled DC electrical
characteristics. Transmitter DC characteristics are measured at the transmitter outputs (SD2_TX[n] and
SD2_TX[n]) as depicted in Figure 23.
Table 37. SGMII DC Transmitter Electrical Characteristics
Parameter
Supply Voltage
Symbol
Min
Typ
Max
1.155
Unit
Notes
XV
1.045
—
1.1
—
V
—
1
DD_SRDS2
Output high voltage
Output low voltage
Output ringing
VOH
XV
/2 mV
DD_SRDS2-Typ
+ |V
|
/2
OD -max
VOL
XV
/2
—
—
mV
%
1
DD_SRDS2-Typ
- |V
|
/2
OD -max
V
—
—
10
—
RING
359
550
791
Equalization
setting: 1.0x
329
299
270
239
210
180
505
458
414
367
322
275
725
659
594
527
462
395
Equalization
setting: 1.09x
Equalization
setting: 1.2x
2, 3, 5
Output differential voltage
Equalization
setting: 1.33x
|V
|
mV
OD
Equalization
setting: 1.5x
Equalization
setting: 1.71x
Equalization
setting: 2.0x
Output offset voltage
V
473
40
—
550
—
628
60
mV
Ω
1, 4
—
OS
Output impedance (single-ended)
Mismatch in a pair
R
O
Δ R
—
10
%
—
O
Change in V between “0” and “1”
Δ |V
|
—
—
25
mV
—
OD
OD
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4
Freescale Semiconductor
44
FREESCALE [ Freescale ]
