MPC8315ECVRAGDA datasheet(35/112 Pages) FREESCALE

35 / 112 page

MPC8315E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

9.5.3

SGMII Transmitter and Receiver DC Electrical Characteristics

Table 35 and Table 36 describe the SGMII SerDes transmitter and receiver AC-Coupled DC electrical

characteristics. Transmitter DC characteristics are measured at the transmitter outputs (SD_TX[n] and

SD_TX[n]) as depicted in Figure .

Table 35. SGMII DC Transmitter Electrical Characteristics

Parameter

Symbol

Min

Typ

Max

Unit

Notes

Supply Voltage

XCOREVDD

0.95

1.0

1.05

—

Output high voltage

VOH

—

XCOREVDD-Typ/2

+ |VOD|-max/2

Output low voltage

VOL

XCOREVDD-Typ/2

- |VOD|-max/2

——

Output ringing

VRING

——

—

Output differential voltage2, 3, 5

|VOD|

323

500

725

Equalization

setting: 1.0x

296

459

665

Equalization

setting: 1.09x

269

417

604

Equalization

setting: 1.2x

243

376

545

Equalization

setting: 1.33x

215

333

483

Equalization

setting: 1.5x

189

292

424

Equalization

setting: 1.71x

162

250

362

Equalization

setting: 2.0x

Output offset voltage

VOS

425

500

575

1, 4

Output impedance (single-ended)

—

Mismatch in a pair

——

—

Change in VOD between “0” and “1”

|VOD|—

—

Change in VOS between “0” and “1”

VOS

——

—

Output current on short to GND

ISA, ISB

——

—

Note:

1. This will not align to DC-coupled SGMII. XCOREVDD-Typ=1.0V.

2. |VOD| = |VTXn - VTXn|. |VOD| is also referred as output differential peak voltage. VTX-DIFFp-p = 2*|VOD|.

3. The |VOD| value shown in the table assumes the following transmit equalization setting in the TXEQA (for SerDes lane A) or

TXEQE (for SerDes lane E) bit field of MPC8315E’s SerDes Control Register 0:

• The LSbits (bit [1:3]) of the above bit field is set based on the equalization setting shown in table.

4. VOS is also referred to as output common mode voltage.

5. The |VOD| value shown in the Typ column is based on the condition of XCOREVDD-Typ=1.0V, no common mode offset variation

(VOS = 500 mV), SerDes transmitter is terminated with 100-Ω differential load between TX[n] and TX[n].

MPC8315ECVRAGDA датащи(PDF) 35 Page - Freescale Semiconductor, Inc

MPC8315ECVRAGDA датащи(HTML) 35 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL