G1K-4 Card; G1K-4 Faceplate And Block Diagram; Figure - Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Reference Manual

5.6 G1K-4 Card

5.6 G1K-4 Card
For hardware specifications, see the
Note
The G1K-4 card is the functional equivalent of the earlier G1000-4 card and provides four ports of
IEEE-compliant, 1000-Mbps interfaces. Each interface supports full-duplex operation for a maximum
bandwidth of 1 Gbps or 2 Gbps bidirectional per port, and 2.5 Gbps or 5 Gbps bidirectional per card.
Each port autonegotiates for full duplex and IEEE 802.3x flow control. The G1K-4 card uses GBIC
modular receptacles for the optical interfaces. For details, see the
section on page
Figure 5-5 shows the card faceplate and the block diagram of the card.

Figure 5-5

FAIL
ACT
RX
1
TX
ACT/LINK
RX
2
TX
ACT/LINK
RX
3
TX
ACT/LINK
RX
4
TX
ACT/LINK
The G1K-4 Gigabit Ethernet card provides high-throughput, low-latency transport of Ethernet
encapsulated traffic (IP and other Layer 2 or Layer 3 protocols) across a SONET network while
providing a greater degree of reliability through SONET self-healing protection services. Carrier-class
Ethernet transport is achieved by hitless (< 50 ms) performance in the event of any failures or protection
Cisco ONS 15454 Reference Manual, R8.5
5-14
5-33.

G1K-4 Faceplate and Block Diagram

G1K
Flash DRAM
Trans-
GBICs
ceivers
Power
"A.7.8 G1K-4 Card Specifications" section on page
Decode
CPU
PLD
Mux/ Inter-
Ethernet
Demux face
MACs/switch
FPGA FPGA
Clock
generation
Buffer
memory
Chapter 5
"5.14 Ethernet Card GBICs and SFPs"
To FPGA, BTC,
MACs
Protect/
Main
POS
BTC
Rx/Tx
function
BPIAs
Ethernet Cards
A-51.
B
a
c
k
p
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n
e
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