BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 154
BT8375
Manufacturer Part Number
BT8375
Description
single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8375.pdf
(323 pages)
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3.0 Registers
3.6 Primary Control and Status Registers
RSBCKI[1:0]
TSBCKI[1:0]
3-36
01A—Clock Input Mux (CMUX)
CLADI[1:0]
RSBCKI[1]
7
RSBCKI[0]
RSBCKI Source Select—The internal clock mux selects 1 of four clock signals for application
to the RSB timebase. RSBCKI input pin is ignored when a clock source other than RSBCKI is
selected.
TSBCKI Source Select—The internal clock mux selects 1 of four clock signals for application
to the TSB timebase. TSBCKI input pin is ignored when a clock source other than TSBCKI is
selected. If TSLIP is bypassed [TSB_CR; addr 0D4], TSBCKI is not used, and the transmit
data on TPCMI must be aligned with the TCKI source selected below.
CLADI Source Select—The internal clock mux selects 1 of four clock signals. The selected
clock signal acts as a CLAD input timing reference when the CLAD is enabled [CEN; addr
090]. CLADI input pin is ignored whenever a clock source other than CLADI is selected.
6
TSBCKI[1]
RSBCKI[1:0]
TSBCKI[1:0]
CLADI[1:0]
5
XX
00
01
10
11
00
01
10
11
00
01
10
11
TSBCKI[0]
4
RSBCKI
RSBCKI
RSBCKI
TSBCKI
TSBCKI
TSBCKI
TSBCKI
CLADO
CLADO
CLADI
CLADI
CLADI
CLADI
Conexant
Source
Source
Source
RCKO
TCKI
none
CLADI[1]
3
Fully Integrated T1/E1 Framer and Line Interface
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
CLADI[0]
2
Normal RSB timebase
RSB slaved to TSB
RSB slaved to CLAD input pin
Internal CLAD (before output
buffer).
Normal TSB timebase
TSB slaved to RSB
TSB slaved to CLAD input
Internal CLAD (before output
buffer).
When TSLIP is bypassed
Normal CLAD input timing
Internal RCKO (before output
buffer).
CLAD slaved to TSB
CLAD slaved to transmit
TCKI[1]
Bt8370/8375/8376
1
Notes
Notes
Notes
N8370DSE
TCKI[0]
0
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