ds265188-port-t1-e1-j1-transc Maxim Integrated Products, Inc., ds265188-port-t1-e1-j1-transc Datasheet - Page 70
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ds265188-port-t1-e1-j1-transc
Manufacturer Part Number
ds265188-port-t1-e1-j1-transc
Description
Ds26518 8-port T1/e1/j1 Transceiver
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS265188-PORT-T1-E1-J1-TRANSC.pdf
(313 pages)
- Current page: 70 of 313
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9.9.10 DS0 Monitoring Function
The DS26518 can monitor one DS0 (64kbps) channel in the transmit direction and one DS0 channel in the receive
direction at the same time.
Table 9-32. Registers Related to DS0 Monitoring
Transmit DS0 Channel Monitor Select
Register (TDS0SEL)
Transmit DS0 Monitor Register
(TDS0M)
Receive Channel Monitor Select Register
(RDS0SEL)
Receive DS0 Monitor Register
(RDS0M)
Note: The addresses shown above are for Framer 1. Addresses for Framers 2 to 8 can be calculated using the following: Framer n = (Framer 1
address + (n - 1) x 200hex), where n = 2 to 8 for Framers 2 to 8.
In the transmit direction the user will determine which channel is to be monitored by properly setting the TCM[4:0]
bits in the
properly set. The DS0 channel pointed to by the TCM[4:0] bits will appear in the Transmit DS0 Monitor Register
(TDS0M) and the DS0 channel pointed to by the RCM[4:0] bits will appear in the Receive DS0 Monitor Register
(RDS0M). The TCM[4:0] and RCM[4:0] bits should be programmed with the decimal decode of the appropriate
T1or E1 channel. T1 channels 1 to 24 map to register values 0 to 23. E1 channels 1 to 32 map to register values 0
to 31. For example, if DS0 channel 6 in the transmit direction and DS0 channel 15 in the receive direction needed
to be monitored, then the following values would be programmed into TDS0SEL and RDS0SEL:
TDS0SEL
REGISTER
register. In the receive direction, the RCM[4:0] bits in the
Table 9-32
shows the registers related to the control of transmit and receive DS0.
TCM4 = 0
TCM3 = 0
TCM2 = 1
TCM1 = 0
TCM0 = 1
ADDRESSES
FRAMER 1
70 of 313
1BBh
189h
012h
060h
RCM4 = 0
RCM3 = 1
RCM2 = 1
RCM1 = 1
RCM0 = 0
Transmit channel to be monitored.
Monitored data.
Receive channel to be monitored.
Monitored data.
DS26518 8-Port T1/E1/J1 Transceiver
RDS0SEL
FUNCTION
register need to be
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