BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 31

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

Bt8954
Voice Pair Gain Framer
3.3.5 Payload Demux
N8954DSC
The Payload Demux block extracts the Indicator (IND), Embedded Operations
Channel (EOC), and the S-bits from each receive frame and places them in
microcomputer-accessible registers:
by the microcomputer is not corrupted by newly arriving data. The
microcomputer must read the contents of the OH registers within 6 ms for every
frame; otherwise the data is overwritten with new received data. The
microcomputer must read the contents of the RSFIFO_O register within 6 ms, 3
ms, 2 ms, or 1 ms, depending on the EXTRA_SIG_UPDATE configuration bits
that are programmed in Command register 1 [CMD_1; 0xC0].
• Receive Indicator Bits [RIND 0xE2, 0xE3]
• Receive Embedded Operations Channel [REOC 0xE0, 0x61]
• Receive Signaling FIFOs [RSFIFO_O; 0xE4]
Double-buffering is used to ensure that the OH and signaling information read
Conexant
3.0 Circuit Descriptions
3.3 Receiver
3-9