MPC8349VVAGF View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

MFG CO.

MPC8349VVAGF

PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications

Freescale Semiconductor 

Prev 21 22 23 24 25 26 27 28 29 30 Next

Ethernet: Three-Speed Ethernet, MII Management

Table 20. RGMII/RTBI (When Operating at 2.5 V) DC Electrical Characteristics

Parameters

Symbol

Conditions

Min

Supply voltage 2.5 V

LVDD

—

2.37

Output high voltage

VOH

IOH = –1.0 mA

LVDD = Min

2.00

Output low voltage

VOL

IOL = 1.0 mA

LVDD = Min GND – 0.3

Input high voltage

VIH

—

LVDD = Min

1.7

Input low voltage

Input high current

Input low current

VIL

—

LVDD = Min

–0.3

IIH

VIN1 = LVDD

—

IIL

VIN1 = GND

–15

Note:

1. The symbol VIN, in this case, represents the LVIN symbol referenced in Table 1 and Table 2.

Max

2.63

LVDD + 0.3

0.40

LVDD + 0.3

0.70

10

—

Unit

V

V

V

V

V

μA

μA

8.2 GMII, MII, TBI, RGMII, and RTBI AC Timing Specifications

The AC timing specifications for GMII, MII, TBI, RGMII, and RTBI are presented in this section.

8.2.1 GMII Timing Specifications

This section describes the GMII transmit and receive AC timing specifications.

8.2.1.1 GMII Transmit AC Timing Specifications

Table 21 provides the GMII transmit AC timing specifications.

Table 21. GMII Transmit AC Timing Specifications

At recommended operating conditions with LVDD/OVDD of 3.3 V ± 10%.

Parameter/Condition

Symbol1

Min

Typ

Max

Unit

GTX_CLK clock period

tGTX

—

8.0

—

ns

GTX_CLK duty cycle

tGTXH/tGTX

43.75

—

56.25

%

GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay

tGTKHDX

0.5

—

5.0

ns

GTX_CLK clock rise time, VIL(min) to VIH(max)

tGTXR

—

—

1.0

ns

GTX_CLK clock fall time, VIH(max) to VIL(min)

GTX_CLK125 clock period

tGTXF

—

—

1.0

ns

tG1252

—

8.0

—

ns

GTX_CLK125 reference clock duty cycle measured at LVDD/2 tG125H/tG125

45

—

55

%

Notes:

1. The symbols for timing specifications follow the pattern t(first two letters of functional block)(signal)(state)(reference)(state) for inputs and

t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tGTKHDV symbolizes GMII transmit timing (GT)

with respect to the tGTX clock reference (K) going to the high state (H) relative to the time date input signals (D) reaching the

valid state (V) to state or setup time. Also, tGTKHDX symbolizes GMII transmit timing (GT) with respect to the tGTX clock

reference (K) going to the high state (H) relative to the time date input signals (D) going invalid (X) or hold time. In general,

the clock reference symbol is based on three letters representing the clock of a particular function. For example, the subscript

of tGTX represents the GMII(G) transmit (TX) clock. For rise and fall times, the latter convention is used with the appropriate

letter: R (rise) or F (fall).

2. This symbol represents the external GTX_CLK125 signal and does not follow the original symbol naming convention.

MPC8349E PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 10

22

Freescale Semiconductor

Share Link: