IEEE 802.3ak-2004 pdf free

IEEE 802.3ak-2004 pdf free.IEEE Standard for Information technology- Telecommunications and information exchange between systems- Local and metropolitan area networks- Specific requirements.
When read as a one. bit 1 .8.9 indicates that the PMA/PMD has extended abilities listed in register 1.11.When read as a zero. bit 1 8.9 indicates that the PMA/PMD does not have extended abilities.
45.2.1.8 10G PMD transmit disable register (Register 1.9)
Change the first paragraph in 45.2.1 .8 (inserted by IEEE Std 802 3ae-2002) to read as fllws:
The assignment of bits in the 10G PMD transmit disable register is shown in Table 45- 9. The transmit disable functionality is optional and a PMD’s ability to perform the transmit disable functionality is advertised in the PMD transmit disable ability bit 1.8.8. A PMD that does not implement the transmit disable functionality shall ignore writes to the 10G PMD transmit disable register and may return a value of zero for all bits.
A PMD device that operates using a single wavelength and has implemented the transmit disable function shall use bit 19.0 to control the function. Such devices shall ignore writes to bits 1.9.4:1 and return a value of zero for those bits when they are read. The transmit disable function for serial PMDs is described in 52.4.7. The transmit disable function for wide wavelength division multiplexing (WWDM) PMDs is described in 53.4.7. The transmit disable function for four-lane clectrical PMDs is described in 54.5.6.
45.2.1.8.5 Global PMD transmit disable (1.9.0)
Change the third paragraph in 45.2.1 .8.5 (inserted by IEEE Std 802 3ae-2002) to read as follows:
For multiple wavelength or lane PMD types, transmission will be disabled on all lanes when this bit is set to one. When this bit is set to zero, the lanes are individually controlled by their corresponding transmit disable bits 194:1.
45.2.1.9 10G PMD receive signal detect register (Register 1.10) Change the first paragraph in 45.2.1 9 (inserted by IEEE Std 802 3ae-2002) t0 read as fllows:
The assignment of bits in the 10G PMD reccive signal detect register is shown in Table 45-10. The 10G PMD receive signal detect register is mandatory. PMD types that use only a single wavelength indicate the status of the receive signal detect using bit 1.10.0 and returm a value of zero for bits 1.10.4:1. PMD types that use multiple wavelengths or lanes jindicate the status of each lane in bits 1.10.4:1 and the logical AND of those bits in bit 1.10.0
45.2.1.9.5 Global PMD receive signal detect (1.10.0)
Change the third paragraph in 45.2.1.95 (inserted by IEEE Std 802 3a-2002) to read as folows:
Multiple wavelength or multiple lane PMD types indicate the global status of the lane-by-lane signal detect indications using this bit. This bit is read as a one when all the lane signal detect indications are one; otherwise, this bit is read as a zero.IEEE 802.3ak pdf free download.