38
CHAPTER 2: SIGNAL DESCRIPTIONS
Table 11 Gigabit Ethernet (GMII/MII) Signals One Cluster Example (continued)
SIGNAL NAME*
CPn+3_2
PIN #† TOTAL TYPE
I/O
LABEL
RXD(4)
RXD(5)
RXD(6)
RXD(7)
RX_ER
SIGNAL DESCRIPTION
Receive Data
Table 7 1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
LVTTL IPD
LVTTL IPU
LVTTL IPD
LVTTL IPU
LVTTL IPU
CPn+3_3
Receive Data
CPn+3_4
Receive Data
CPn+3_5
Receive Data (most significant bit)
CPn+3_6
Receive Error Detected. Indicates that there has been an error
received in the receive frame.
28
TOTAL PINS
*
n can be 0, or 4.
†
Reference Table 7 for pin numbers for the actual cluster(s) you are configuring.
Gigabit Ethernet and Fibre Channel TBI Configuration
1000BASE-T Gigabit Ethernet and Fibre Channel TBI is implemented in much the same
way as Gigabit Ethernet (GMII). Table 10 shows the possible CP pin combinations you can
use and Figure 4 shows receive and transmit pin configurations by cluster. Table 12 shows
the signals and pinouts for a single cluster for Gigabit Ethernet and Fibre Channel TBI.
The unused pins for the two cluster configurations should be wired down using a resistor.
Table 12 Gigabit Ethernet and Fibre Channel TBI Signals Example
SIGNAL NAME*
PIN #† TOTAL TYPE
I/O
LABEL
SIGNAL DESCRIPTION
CPn_0
Table 7 1
LVTTL
OPD
TCLK
Transmit Clock (125MHz). This clock is used to synchronize the
transmit data.
CPn_1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
Table 7 1
nc
ncPU nc
nc
CPn_2
LVTTL
LVTTL
LVTTL
LVTTL
LVTTL
nc
OPD
OPU
OPD
OPU
OPU
TXD(9)
Transmit Data (ten bits wide, last on wire)
CPn_3
TXD(8)
TXD(7)
TXD(6)
TXD(1)
Transmit Data
Transmit Data
Transmit Data
Transmit Data
nc
CPn_4
CPn_5
CPn_6
CPn+1_0
CPn+1_1
CPn+1_2
ncPD nc
ncPU nc
nc
nc
LVTTL
OPD
TXD(5)
Transmit Data
C3EN
FREESCALE [ Freescale ]
