參數(shù)資料
型號: XRT83SL34IV
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
中文描述: DATACOM, PCM TRANSCEIVER, PQFP128
封裝: 14 X 20 MM, 1.40 MM HEIGHT, TQFP-128
文件頁數(shù): 29/80頁
文件大小: 1154K
代理商: XRT83SL34IV
XRT83SL34
QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. 1.0.0
32
RECEIVE 1:1 & 1+1 REDUNDANCY
For 1:1 and 1+1 redundancy, the receivers on the primary card should be programmed for Internal Impedance
mode. The receivers on the backup card should be programmed for External Impedance mode. Since there is
no external resistor in the circuit, the receivers on the backup card will be high impedance. This key design
feature eliminates the need for relays and provides one bill of materials for all interface modes of operation.
Select the impedance for the desired mode of operation, T1/E1/J1. To swap the primary card, set the backup
card to Internal Impedance mode, then the primary card to External Impedance mode. See Figure 15 for a
simplified block diagram of the receive section for a 1:1 and 1+1 redundancy scheme.
NOTE: For simplification, the over voltage protection circuitry was omitted.
FIGURE 14. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT SECTION FOR 1:1 & 1+1 REDUNDANCY
FIGURE 15. SIMPLIFIED BLOCK DIAGRAM - RECEIVE SECTION FOR 1:1 AND 1+1 REDUNDANCY
T 1 /E 1 Line
B a ckp la n e In te rfa ce
Prim a ry C a rd
B a ckup C a rd
X R T 83S L34
Tx
Line In te rface C a rd
0.68
F
0.68
F
T xT S E L =1 , In te rn a l
1:2 or 1:2.45
R xT SEL =0 , Exte rn a l
R xT S E L =1 , In te rn a l
B a ckp la n e In te rfa ce
Prim a ry C a rd
B a ckup C a rd
X R T 83S L34
Rx
Line In te rface C a rd
T 1 /E 1 Line
Rx
1:1
相關(guān)PDF資料
PDF描述
XRT83SL34 QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
XS2F-A422-90-A 4 CONTACT(S), POLYBUTYLENE TEREPHTHALATE, FEMALE, CIRCULAR CONNECTOR, CLAMP, SOCKET
XS2F-A422-A90-A 4 CONTACT(S), POLYBUTYLENE TEREPHTHALATE, FEMALE, CIRCULAR CONNECTOR, CLAMP, SOCKET
XS2F-A422-AB0-A 4 CONTACT(S), POLYBUTYLENE TEREPHTHALATE, FEMALE, CIRCULAR CONNECTOR, CLAMP, SOCKET
XS2F-A422-AC0-A 4 CONTACT(S), POLYBUTYLENE TEREPHTHALATE, FEMALE, CIRCULAR CONNECTOR, CLAMP, SOCKET
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