Rainbow Electronics AT76C551 - Manual (Page 49)

49
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