DS26518 Datasheet, PDF (202/312 Pages) Maxim Integrated Products – 8-Port T1/E1/J1 Transceiver

DS26518 8-Port T1/E1/J1 Transceiver
Register Name:
Register Description:
Register Address:
RGCCS1, RGCCS2, RGCCS3, RGCCS4
Receive Gapped Clock Channel Select Registers 1 to 4
0CCh, 0CDh, 0CEh, 0CFh + (200h x (n - 1)) : where n = 1 to 8
Bit #
Name
(MSB)
7
CH8
CH16
CH24
CH32
6
CH7
CH15
CH23
CH31
5
CH6
CH14
CH22
CH30
4
CH5
CH13
CH21
CH29
3
CH4
CH12
CH20
CH28
2
CH3
CH11
CH19
CH27
1
CH2
CH10
CH18
CH26
(LSB)
0
CH1
CH9
CH17
CH25
(F-bit)
RGCCS1
RGCCS2
RGCCS3
RGCCS4 (E1
Mode Only)*
Bits 7 to 0: Gapped Clock Channel Select Bits for Receive Channels 1 to 32(CH[1:32])
0 = No clock is present on RCHCLKn during this channel time.
1 = Force a clock on RCHCLKn during this channel time. The clock will be synchronous with RCLKn if the
elastic store is disabled, and synchronous with RSYSCLKn if the elastic store is enabled.
* Note that RGCCS4 has two functions:
When 2.048MHz backplane mode is selected, this register allows the user to enable the gapped clock on
RCHCLKn for any of the 32 possible backplane channels.
When 1.544MHz backplane mode is selected, the LSB of this register determines whether or not a clock is
generated on RCHCLKn during the F-bit time:
RGCCS4.0 = 0, do not generate a clock during the F-bit.
RGCCS4.0 = 1, generate a clock during the F-bit.
In this mode RGCCS4.1 to RGCCS4.7 should be set to 0.
Register Name:
Register Description:
Register Address:
RCICE1, RCICE2, RCICE3, RCICE4
Receive Channel Idle Code Enable Registers 1 to 4
0D0h, 0D1h, 0D2h, 0D3h + (200h x (n - 1)) : where n = 1 to 8
Bit #
Name
(MSB)
7
CH8
CH16
CH24
CH32
6
CH7
CH15
CH23
CH31
5
CH6
CH14
CH22
CH30
4
CH5
CH13
CH21
CH29
3
CH4
CH12
CH20
CH28
2
CH3
CH11
CH19
CH27
1
CH2
CH10
CH18
CH26
(LSB)
0
CH1
CH9
CH17
CH25
RCICE1
RCICE2
RCICE3
RCICE4 (E1
Mode Only)
Bits 7 to 0: Receive Channels 1 to 32 Code Insertion Control Bits (CH[1:32])
0 = Do not insert data from the Idle Code Array into the receive data stream.
1 = Insert data from the Idle Code Array into the receive data stream.
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