PPC8567ECVTANJGA datasheet(31/139 Pages) FREESCALE

31 / 139 page

MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

Ethernet Interface and MII Management

Figure 9 shows the GMII transmit AC timing diagram.

Figure 9. GMII Transmit AC Timing Diagram

8.2.2.2

GMII Receive AC Timing Specifications

Table 28 provides the GMII receive AC timing specifications.

EC_GTX_CLK125 duty cycle

tG125H/tG125

Notes:

1. The symbols used for timing specifications herein 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. Note that, in general, the clock reference symbol representation is based on three letters representing the clock of a

particular functional. 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. Guaranteed by design

Table 28. GMII Receive AC Timing Specifications

At recommended operating conditions with L/TVDD of 3.3 V ± 5%.

Parameter/Condition

Symbol 1

Min

Typ

Max

Unit

RX_CLK clock period

tGRX

—8.0

—

RX_CLK duty cycle

tGRXH/tGRX

—

RXD[7:0], RX_DV, RX_ER setup time to RX_CLK

tGRDVKH

2.0

—

RXD[7:0], RX_DV, RX_ER hold time to RX_CLK

tGRDXKH

0.5

—

RX_CLK clock rise (20%-80%)

tGRXR

—1.0

2.0

Table 27. GMII Transmit AC Timing Specifications (continued)

At recommended operating conditions with LVDD of 3.3 V ± 5%.

Parameter/Condition

Symbol 1

Min

Typ

Max

Unit

GTX_CLK

TXD[7:0]

tGTKHDX

tGTX

tGTXH

tGTXR

tGTXF

tGTKHDV

TX_EN

TX_ER

PPC8567ECVTANJGA Datasheet(PDF) 31 Page - Freescale Semiconductor, Inc

PPC8567ECVTANJGA Datasheet(HTML) 31 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

Datasheet Download

Link URL