Rainbow Electronics DS26519 - Manual (Page 185)

DS26519 16-Port T1/E1/J1 Transceiver
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Register Name: RHFC
Register Description: Receive HDLC FIFO Control Register
Register Address: 087h + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
Bit
# 7 6 5 4 3 2 1 0
Name — — — — — — RFHWM1 RFHWM0
Default 0 0 0 0 0 0 0 0
Bits 1 and 0 : Receive FIFO High Watermark Select (RFHWM[1:0]
RFHWM1 RFHWM0 Receive FIFO Watermark
0 0 4 bytes
0 1 16 bytes
1 0 32 bytes
1 1 48 bytes
Register Name: RIBOC
Register Description: Receive Interleave Bus Operation Control Register
Register Address: 088h + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
Bit
# 7 6 5 4 3 2 1 0
Name — — — IBOSEL IBOEN — — —
Default 0 0 0 0 0 0 0 0
Bit 4: Interleave Bus Operation Select (IBOSEL). This bit selects channel or frame interleave mode.
0 = Channel Interleave
1 = Frame Interleave
Bit 3: Interleave Bus Operation Enable (IBOEN)
0 = Interleave Bus Operation disabled.
1 = Interleave Bus Operation enabled.