ds26518 Maxim Integrated Products, Inc., ds26518 Datasheet - Page 135

• Manufacturer Part Number: ds26518
• Description: 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 4 to 0: Receive Channel Monitor Bits (RCM[4:0]). RCM0 is the LSB of a 5-bit channel select that
determines which receive DS0 channel data will appear in the RDS0M register.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 4 (T1 Mode): Receive Force Signaling All Ones (RFSA1)
Bit 4 (E1 Mode): CAS Mode Select (CASMS)
Bit 2: Receive-Signaling Force Freeze (RSFF). Freezes receive-side signaling at RSIGn (and RSERn if receive-
signaling reinsertion is enabled); will override receive freeze enable (RFE).
Bit 1: Receive-Signaling Freeze Enable (RSFE)
Bit 0: Receive-Signaling Integration Enable (RSIE)
0 = Do not force robbed bit signaling to all ones.
1 = Force signaling bits to all ones on a per-channel basis according to the T1RSAOI1–3 registers.
0 = The DS26518 will initiate a resync when two consecutive multiframe alignment signals have been
received with an error.
1 = The DS26518 will initiate a resync when two consecutive multiframe alignment signals have been
received with an error, or 1 multiframe has been received with all the bits in time slot 16 in state 0.
Alignment criteria is met when at least one bit in state 1 is present in the time slot 16 preceding the
multiframe alignment signal first detected (G.732 alternate criteria).
0 = Do not force a freeze event.
1 = Force a freeze event.
0 = No freezing of receive signaling data will occur.
1 = Allow freezing of receive signaling data at RSIGn (and RSERn if receive-signaling reinsertion is
enabled).
0 = Signaling changes of state reported on any change in selected channels.
1 = Signaling must be stable for three multiframes in order for a change of state to be reported.
—
—
—
7
0
7
0
RDS0SEL
Receive Channel Monitor Select Register
012h + (200h x (n - 1)) : where n = 1 to 8
RSIGC
Receive-Signaling Control Register
013h + (200h x (n - 1)) : where n = 1 to 8
—
—
—
6
0
6
0
—
—
—
5
0
5
0
CASMS
RFSA1
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RCM4
4
0
4
0
RCM3
—
—
3
0
3
0
DS26518 8-Port T1/E1/J1 Transceiver
RCM2
RSFF
RSFF
2
0
2
0
RCM1
RSFE
RSFE
1
0
1
0
RCM0
RSIE
RSIE
0
0
0
0