Owner manual

AT76C551

1612D–08/01

VC_RxReadPort: Voice CODEC Receive FIFO Read Port

addr: 500010 hex R 8 bits

• Bits 7..0 – VC_RXD[7:0]: Receive Data

Note: Default Value: 00 hex

VC_TxFifoCtrl: Voice CODEC Transmit FIFO Control Status Register

addr: 500014 hex R/W 16 bits

• Bit 15 – EMPTY

• Bit 14 – ALEMPTY

1 byte left to be transmitted.

• Bit 13 – FULL

• Bit 12 – RESFF: Reset Transmit FIFO

• Bits 11..10 – Reserved

• Bits 9..5 – TXFTR[4:0]: Transmit FIFO threshold

• Bits 4..0 – LEVEL[4:0]: Transmit FIFO Level

Note: Default Value: 0000 hex

VC_TxWritePort: Voice CODEC Transmit FIFO Write Port

addr: 500018 hex W 8 bits

• Bits 7..0 – VC_RXD[7:0]: Transmit Data

Note: Default Value: 00 hex