BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 13

• Manufacturer Part Number: BT8954
• Description: VOICE PAIR GAIN FRAMER
• Manufacturer: CONEXANT [Conexant Systems, Inc]

Bt8954
Voice Pair Gain Framer
Figure 1-2. Repeater Block Diagram
N8954DSC
Bt8954
Central Office Terminal
RDAT
TDAT
Bt8960/
Bt8970
XTAL
registers. The CRC is then calculated and inserted. Then the data is scrambled and
transmitted to the destination bit pump.
descrambles like Bt8954 in the remote terminal. That is, SCRAM_TAP = 0
[TCMD2; 0x87.1] but DSCRAM_TAP = 1 [RCMD_2; 0x91.4].
like Bt8954 in the Central Office terminal. That is, SCRAM_TAP = 1
[TDMD2; 0x87.1] but DSCRAM_TAP = 0 [RCMD_2; 0x91.4].
XTAL
Next, EOC and IND overhead are inserted from the Bt8954 EOC and IND
Bt8954 (C R) scrambles like Bt8954 in the Central Office terminal but
Bt8954 (R C) scrambles like Bt8954 in the remote terminal but descrambles
Bt8960/
Bt8970
TDAT
QCLK_REP
BCLK_REP
BCLK
QCLK
RDAT
HCLK
Conexant
Bt8954 (R C)
Bt8954 (C R)
Repeater
QCLK_REP
BCLK_REP
QCLK
BCLK
RDAT
TDAT
Bt8960/
Bt8970
1.1 Voice Pair Gain Applications
Bt8960/
Bt8970
XTAL
Remote Terminal
1.0 DSL Systems
RDAT
TDAT
Bt8954
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