Table 2-7, Eiver, Describes t – Xilinx 1000BASE-X User Manual
Page 37
Ethernet 1000BASE-X PCS/PMA or SGMII v9.1
37
UG155 March 24, 2008
Core Interfaces
R
Table 2-7:
Optional RocketIO Transceiver Interface Pinout
Signal
Direction
Description
mgt_rx_reset
1
1. When the core is used with a RocketIO transceiver, userclk2 is used as the 125 MHz reference clock
for the entire core.
Output
Reset signal issued by the core to the RocketIO
transceiver receiver path. Connect to RXRESET signal
of RocketIO transceiver.
mgt_tx_reset
Output
Reset signal issued by the core to the RocketIO
transceiver transmitter path. Connect to TXRESET
signal of RocketIO transceiver.
userclk
Input
Also connected to TXUSRCLK and RXUSRCLK of the
RocketIO transceiver. Clock domain is not applicable.
userclk2
Input
Also connected to TXUSRCLK2 and RXUSRCLK2 of
the RocketIO transceiver. Clock domain is not
applicable.
dcm_locked
Input
A DCM may be used to derive userclk and userclk2.
This is implemented in the HDL design example
delivered with the core. The core will use this input to
hold the RocketIO transceiver in reset until the DCM
obtains lock. Clock domain is not applicable.
rxbufstatus[1:0]
Input
Connect to RocketIO signal of the same name.
Input
Connects to RocketIO signal of the same name.
Input
Connects to RocketIO signal of the same name.
rxclkcorcnt[2:0]
Input
Connect to RocketIO signal of the same name.
rxdata[7:0]
Input
Connect to RocketIO signal of the same name.
Input
Connects to RocketIO signal of the same name.
Input
Connects to RocketIO signal of the same name.
rxrundisp
Input
Connects to RocketIO signal of the same name.
txbuferr
Input
Connects to RocketIO signal of the same name.
powerdown
Output
Connects to RocketIO signal of the same name.
txchardispmode
Output
Connects to RocketIO signal of the same name.
txchardispval
Output
Connects to RocketIO signal of the same name.
txcharisk
Output
Connects to RocketIO signal of the same name.
txdata[7:0]
Output
Connect to RocketIO signal of the same name.
enablealign
Output
Allows the transceivers to serially realign to a comma
character. Connects to ENMCOMMAALIGN and
ENPCOMMAALIGN of the RocketIO.