전자부품 데이터시트 검색엔진 |
|
LAN8710A-EZC 데이터시트(PDF) 20 Page - SMSC Corporation |
|
LAN8710A-EZC 데이터시트(HTML) 20 Page - SMSC Corporation |
20 / 82 page Small Footprint MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology Datasheet Revision 1.4 (08-23-12) 20 SMSC LAN8710A/LAN8710Ai DATASHEET For RMII, the MAC controller drives the transmit data onto the TXD bus and asserts TXEN to indicate valid data. The data is latched by the transceiver’s RMII block on the rising edge of REF_CLK. The data is in the form of 2-bit wide 50MHz data. 3.1.1.2 4B/5B Encoding The transmit data passes from the MII/RMII block to the 4B/5B encoder. This block encodes the data from 4-bit nibbles to 5-bit symbols (known as “code-groups”) according to Table 3.1. Each 4-bit data- nibble is mapped to 16 of the 32 possible code-groups. The remaining 16 code-groups are either used for control information or are not valid. The first 16 code-groups are referred to by the hexadecimal values of their corresponding data nibbles, 0 through F. The remaining code-groups are given letter designations with slashes on either side. For example, an IDLE code-group is /I/, a transmit error code-group is /H/, etc. Table 3.1 4B/5B Code Table CODE GROUP SYM RECEIVER INTERPRETATION TRANSMITTER INTERPRETATION 11110 0 0 0000 DATA 0 0000 DATA 01001 1 1 0001 1 0001 10100 2 2 0010 2 0010 10101 3 3 0011 3 0011 01010 4 4 0100 4 0100 01011 5 5 0101 5 0101 01110 6 6 0110 6 0110 01111 7 7 0111 7 0111 10010 8 8 1000 8 1000 10011 9 9 1001 9 1001 10110 A A 1010 A 1010 10111 B B 1011 B 1011 11010 C C 1100 C 1100 11011 D D 1101 D 1101 11100 E E 1110 E 1110 11101 F F 1111 F 1111 11111 I IDLE Sent after /T/R until TXEN 11000 J First nibble of SSD, translated to “0101” following IDLE, else RXER Sent for rising TXEN 10001 K Second nibble of SSD, translated to “0101” following J, else RXER Sent for rising TXEN 01101 T First nibble of ESD, causes de-assertion of CRS if followed by /R/, else assertion of RXER Sent for falling TXEN |
유사한 부품 번호 - LAN8710A-EZC |
|
유사한 설명 - LAN8710A-EZC |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |