KPC8544EVTANG Freescale Semiconductor, KPC8544EVTANG Datasheet - Page 30

• Manufacturer Part Number: KPC8544EVTANG
• Description: Microprocessors - MPU PQ38K 8544E
• Manufacturer: Freescale Semiconductor

Specifications of KPC8544EVTANG

• Product Category: Microprocessors - MPU
• Rohs: yes
• Maximum Clock Frequency: 800 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: FCPBGA
• I/o Voltage: 1.8 V, 2.5 V, 3.3 V
• Minimum Operating Temperature: 0 C
• Factory Pack Quantity: 5

Enhanced Three-Speed Ethernet (eTSEC), MII Management
Figure 10
8.5
The AC timing specifications for FIFO, GMII, MII, TBI, RGMII, RMII, and RTBI are presented in this
section.
8.5.1
The basis for the AC specifications for the eTSEC FIFO modes is the double data rate RGMII and RTBI
specifications, since they have similar performance and are described in a source-synchronous fashion like
FIFO modes. However, the FIFO interface provides deliberate skew between the transmitted data and
source clock in GMII fashion.
When the eTSEC is configured for FIFO modes, all clocks are supplied from external sources to the
relevant eTSEC interface. That is, the transmit clock must be applied to the eTSECn TSECn_TX_CLK,
while the receive clock must be applied to pin TSECn_RX_CLK. The eTSEC internally uses the transmit
clock to synchronously generate transmit data and outputs an echoed copy of the transmit clock back out
onto the TSECn_GTX_CLK pin (while transmit data appears on TSECn_TXD[7:0], for example). It is
intended that external receivers capture eTSEC transmit data using the clock on TSECn_GTX_CLK as a
source-synchronous timing reference. Typically, the clock edge that launched the data can be used, since
the clock is delayed by the eTSEC to allow acceptable set-up margin at the receiver.
A summary of the FIFO AC specifications appears in
30
At recommended operating conditions with L/TVDD of 3.3 V ± 5% or 2.5 V ± 5%
TX_CLK, GTX_CLK clock period
TX_CLK, GTX_CLK duty cycle
TX_CLK, GTX_CLK peak-to-peak jitter
Rise time TX_CLK (20%–80%)
FIFO, GMII,MII, TBI, RGMII, RMII, and RTBI AC Timing
Specifications
provides the AC test load for SGMII.
FIFO AC Specifications
Parameter/Condition
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 6
Table 28. FIFO Mode Transmit AC Timing Specification
D+ Package
D+ Package
D– Package
Figure 10. SGMII AC Test/Measurement Load
+ Package
Silicon
Pin
Pin
Pin
TX
Symbol
t
t
t
t
FITH
FITR
FITJ
C = C
C = C
FIT
R = 50 Ω
TX
TX
Table 28
Min
45
—
—
—
and
Table
R = 50 Ω
Typ
8.0
50
—
—
29.
Max
0.75
250
55
—
Freescale Semiconductor
Unit
ns
ps
ns
%
Notes
—
—
—
—