ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 49

• Manufacturer Part Number: ds21ft40
• Description: Ds21ft40 Four X Three 12 Channel E1 Framer
• Manufacturer: Maxim Integrated Products, Inc.

TC1 TO TC32: TRANSMIT CHANNEL REGISTERS (Address=60 to 7F Hex)
(for brevity, only channel one is shown; see Table 3-1 for other register address)
TCC1/TCC2/TCC3/TCC4: TRANSMIT CHANNEL CONTROL REGISTER
(Address=A0 to A3 Hex)
10.2 RECEIVE SIDE CODE GENERATION
On the receive side, the Receive Channel Control Registers (RCC1/2/3/4) are used to determine which of
the 32 E1 channels off of the E1 line and going to the backplane should be overwritten with the code
placed in the Receive Channel Registers (RC1 to RC32). This method allows a different 8–bit code to be
placed into each of the 32 E1 channels.
RC1 TO RC32: RECEIVE CHANNEL REGISTERS (Address=80 to 9F Hex)
(for brevity, only channel one is shown; see Table 3-1 for other register address)
(MSB)
CH16
CH24
CH32
(MSB)
(MSB)
CH8
SYMBOLS
SYMBOLS
SYMBOLS
C7
C7
CH1 - 32
C7
C0
C7
C0
CH15
CH23
CH31
CH7
C6
C6
TCC1.0 - 4.7
POSITION
POSITION
POSITION
CH14
CH22
CH30
CH6
TC1.7
TC1.0
RC1.7
RC1.0
C5
C5
CH13
CH21
CH29
CH5
C4
C4
NAME AND DESCRIPTION
NAME AND DESCRIPTION
NAME AND DESCRIPTION
MSB of the Code (this bit is sent first to the backplane)
LSB of the Code (this bit is sent last to the backplane)
MSB of the Code (this bit is transmitted first)
LSB of the Code (this bit is transmitted last)
Transmit Code Insertion Control Bits
0 = do not insert data from the TC register into the transmit
data stream
1 = insert data from the TC register into the transmit data
stream
CH12
CH20
CH28
CH4
C3
C3
49 of 87
CH19
CH27
CH11
CH3
C2
C2
CH10
CH18
CH26
CH2
C1
C1
(LSB)
CH17
CH25
CH1
CH9
(LSB)
(LSB)
C0
C0
TCC1 (A0)
TCC2 (A1)
TCC3 (A2)
TCC4 (A3)
TC1 (60)
RC1 (80)
DS21FT40