Datasheet

DS26518 8-Port T1/E1/J1 Transceiver
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Register Name:
T1RIBCC (T1 Mode)
Register Description:
Receive In-Band Code Control Register
Register Address:
082h + (200h x (n - 1)) : where n = 1 to 8
Bit # 7 6 5 4 3 2 1 0
Name — — RUP2 RUP1 RUP0 RDN2 RDN1 RDN0
Default 0 0 0 0 0 0 0 0
Note: This register has an alternate definition for E1 mode. See E1RCR2.
Bits 5 to 3: Receive Up Code Length Definition Bits (RUP[2:0])
RUP2 RUP1 RUP0 LENGTH SELECTED
0 0 0 1 bits
0 0 1 2 bits
0 1 0 3 bits
0 1 1 4 bits
1 0 0 5 bits
1 0 1 6 bits
1 1 0 7 bits
1 1 1 8 : 16 bits
Bits 2 to 0: Receive Down Code Length Definition Bits (RDN[2:0])
RDN2 RDN1 RDN0 LENGTH SELECTED
0 0 0 1 bits
0 0 1 2 bits
0 1 0 3 bits
0 1 1 4 bits
1 0 0 5 bits
1 0 1 6 bits
1 1 0 7 bits
1 1 1 8 : 16 bits
Register Name:
E1RCR2 (E1 Mode)
Register Description:
Receive Control Register 2
Register Address:
082h + (200h x (n - 1)) : where n = 1 to 8
Bit # 7 6 5 4 3 2 1 0
Name — — — — — — — RLOSA
Default 0 0 0 0 0 0 0 0
Note: This register has an alternate definition for T1 mode. See T1RIBCC.
Bit 0: Receive Loss of Signal Alternate Criteria (RLOSA). Defines the criteria for a loss of signal condition.
0 = LOS declared upon 255 consecutive zeros (125
μs).
1 = LOS declared upon 2048 consecutive zeros (1ms).