Rainbow Electronics DS21458 - Manual (Page 125)

DS21455/DS21458 Quad T1/E1/J1 Transceivers
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Register Name:
RFDL (RFDL register bit usage when BOCC.4 = 1)
Register Description: Receive FDL Register
Register Address: C0h
Bit
# 7 6 5 4 3 2 1 0
Name — — RBOC5 RBOC4 RBOC3 RBOC2 RBOC1 RBOC0
Default 0 0 0 0 0 0 0 0
Bit 0/BOC Bit 0 (RBOC0).
Bit 1/BOC Bit 1 (RBOC1).
Bit 2/BOC Bit 2 (RBOC2).
Bit 3/BOC Bit 3 (RBOC3).
Bit 4/BOC Bit 4 (RBOC4).
Bit 5/BOC Bit 5 (RBOC5).
Bit 6/This bit position is unused when BOCC.4 = 1.
Bit 7/This bit position is unused when BOCC.4 = 1.
Register Name:
SR8
Register Description: Status Register 8
Register Address: 24h
Bit
# 7 6 5 4 3 2 1 0
Name — — BOCC RFDLAD RFDLF TFDLE RMTCH RBOC
Default 0 0 0 0 0 0 0 0
Bit 0/Receive BOC Detector Change of State Event (RBOC). Set whenever the BOC detector sees a change of state to a
valid BOC. The setting of this bit prompts the user to read the RFDL register.
Bit 1/Receive FDL Match Event (RMTCH). Set whenever the contents of the RFDL register matches RFDLM1 or
RFDLM2.
Bit 2/TFDL Register Empty Event(TFDLE). Set when the transmit FDL buffer (TFDL) empties.
Bit 3/RFDL Register Full Event (RFDLF). Set when the receive FDL buffer (RFDL) fills to capacity.
Bit 4/RFDL Abort Detect Event (RFDLAD). Set when eight consecutive ones are received on the FDL.
Bit 5/BOC Clear Event (BOCC). Set when 30 FDL bits occur without an abort sequence.