TI中文支持网Part Number:DS100MB203
dear
from the datasheet i saw the DS100MB203 can support high speed bus， if the DS100MB203 can support QSGMII and 1000BASE-SX port ? if i used for QSGMII or 1000BASE-SX how could i set the MODE pin?
the MODE PIN below, how could i set?
0: SATA/SAS, PCIe GEN 1/2 and 10GE
FLOAT: AUTO (PCIe GEN 1/2 or GEN 3)
1: 10-KR
Kailyn Chen：
Hello,
QSGMII works 5Gbps data rate, 1000BASE-SX is 1000Mbps, while DS100MB203 could support 10.3125 Gbps, so it could support both QSGMII and 1000BASE-SX.
About the configuration, I think according to the data rate support, MODE could pull low ( because PCIE GEN2 is 5Gbps).
1)MODE pin determines if the device is operating in linear mode or limiting mode.
Definition of linear and limiting mode:
Linear mode: output is analog representation of the input and EQ pins control high frequency signal boost.
Limiting mode: output is either low or high and does not follow analog behavior of the incoming signal.
2). 10GbE is limiting mode while 10G-KR is linear mode
3). In 10GbE mode, TX setting such as pre-emphasis and VOD are effective. In linear mode, EQ level could effect output signal.
