15 FIFO Control Register
The FIFO Control Register is used to control the external data FIFOs. The address of this
register is Base+A (hex). Table 13 details the bit definitions of the register. This register can be
ignored if the external FIFOs are not being used.
TX_RESET
0
0
0
RX_RESET
EN_TO
EN_PAT
0
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Table 13 --- FIFO Control Register - Read/Write
Bit 7:
Reserved, always 0.
Bit 6:
EN_PAT --- Enable Receive Pattern Detection:
Set this
bit (logic 1), to enable the receive pattern detection circuitry. Clear this bit (logic
0), to disable pattern detection. See page 37 for details on the receive pattern
detection feature.
Bit 5:
EN_TO --- Enable Receive Timeout:
Set this bit (logic 1), to enable the external receive FIFO timeout. Clear this bit
(logic 0), to disable the receive FIFO timeout. See page 38 for details on the
receive FIFO timeout feature.
Bit 4:
RX_RESET --- Reset Receive FIFO
:
Set (logic 1), then clear (logic 0) this bit to reset the external receive FIFO. The
FIFO can be reset only when it is disabled.
Bits 3-1:
Reserved, always 0.
Bit 0:
TX_RESET --- Reset Transmit FIFO
:
Set (logic 1), then clear (logic 0) this bit to reset the external transmit FIFO. The
FIFO can be reset only when it is disabled.
