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Intel
®
IXF1104 4-Port Gigabit Ethernet Media Access Controller
Datasheet 90
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
5.2.2.8.1 Clock Rates
The TFCLK and RFCLK can be independent of each other in SPHY mode operation. TFCLK and
RFCLK should be common to all the Network Processor devices. The IXF1104 MAC requires an
individual single clock source for the device transmit path and a single clock source for the device
receive path.
The IXF1104 MAC allows this interface to be overclocked so that all four IXF1104 MAC ports can
operate at 1 Gbps. This allows data transfer at data rates of up to 4.0 Gbps when operating at an
overclocked frequency of 125 MHz.
Note: SPHY operates at a maximum frequency of 125 MHz.
Figure 16. SPHY Connection for Two Intel
®
IXF1104 MAC Ports (8-Bit Interface)
B0659-02
TFCLK
TENB[0]
TDAT[7:0][0]
TPRTY[0]
TERR[0]
TSOP[0]
TEOP[0]
Network Processor
SPI3 Bus
Intel
®
IXF1104
Port 0
TFCLK
TENB_0
TDAT[7:0]_0
TPRTY_0
TERR_0
TSOP_0
TEOP_0
RFCLK
RENB[0]
RDAT[7:0][0]
RPRTY[0]
RPRTY_0
RVAL[0]
RERR[0]
RSOP[0]
REOP[0]
RFCLK
RENB_0
RDAT[7:0]_0
RVAL_0
RERR_0
RSOP_0
REOP_0
DTPA[0]
TFCLK
TENB[1]
TDAT[7:0][1]
TPRTY[1]
TERR[1]
TSOP[1]
TEOP[1]
RFCLK
RENB[1]
RDAT[7:0][1]
RPRTY[1]
RPRTY_1
RVAL[1]
RERR[1]
RSOP[1]
REOP[1]
DTPA[1]
DTPA_0
Transceiver
Port 1
SPI3
Flow Control
TFCLK
TENB_1
TDAT[7:0]_1
TPRTY_1
TERR_1
TSOP_1
TEOP_1
RFCLK
RENB_1
RDAT[7:0]_1
RVAL_1
RERR_1
RSOP_1
REOP_1
DTPA_1
Transceiver
Port 0
Port 1
Line-Side
Interface
Line-Side
Interface
PTPA
TADR[1:0]
PTPA
TADR[1:0]