Motorola MC92603, Reference Manual

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MOTOROLA Chapter 7. Electrical Specifications and Characteristics 7-5
AC Electrical Characteristics
Table 7-4 provides the transmitter non-DDR timing specifications for the MC92603 as
defined in Figure 7-1.
7.3.1.2 Transmitter Interface, DDR Timing
Figure 7-2 provides the transmitter interface DDR interface timing diagram.
Figure 7-2. Transmitter Interface, DDR Timing Diagram
Table 7-5 provides the transmitter DDR timing specifications for the MC92603 as defined
in Figure 7-2.
Table 7-4. Transmitter Non-DDR Timing Specification
Symbol Characteristic Min Max Unit Application Mode
T
1
Setup time prior to rising edge of XMIT_x_CLK 1.000 — ns All modes
T
2
Hold time after rising edge of XMIT_x_CLK 0.0
1
1
Synchronous to channel’s transmit interface clock; XMIT_REF_A = low.
— ns GMII or TBI
0.200
1
— ns Backplane modes
0.600
2
2
Synchronous to XMIT_A_CLK; XMIT_REF_A = high.
— ns All modes
Φ
drift
Phase drift between XMIT_x_CLK and REF_CLK –180 180 degrees All modes
Table 7-5. Transmitter DDR Timing Specifications
Symbol Characteristic Min Max Unit Application Mode
T
1
Setup time prior to rising/falling edge of XMIT_x_CLK 1.000 — ns All DDR modes
T
2
Hold time after rising/falling edge of XMIT_x_CLK 0.000
1, 2
1
Synchronous to channel’s transmit interface clock; XMIT_REF_A = low.
2
Synchronous to XMIT_A_CLK; XMIT_REF_A = high.
— ns RGMII or RTBI
0.200
1
— ns Backplane DDR
modes
0.600
2
— ns
Φ
drift
Phase drift between XMIT_x_CLK and REF_CLK –180 180 degrees All modes
XMIT_x_CLK
XMIT_x_3–0
XMIT_x_K
1
XMIT_x_ENABLE
T
1
T
2
1
Used only when transmitting uncoded data in backplane modes.
T
1
T
2