SCD240110QCM Intel, SCD240110QCM Datasheet - Page 113
SCD240110QCM
Manufacturer Part Number
SCD240110QCM
Description
Manufacturer
Intel
Datasheet
1.SCD240110QCM.pdf
(176 pages)
Specifications of SCD240110QCM
Operating Supply Voltage (max)
7V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
100
Lead Free Status / Rohs Status
Not Compliant
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8.2.13
8.3
8.3.1
8.3.1.1
Datasheet
Register Name: CPSR
Register Description: CRC Polynomial Select
Default Value: x’00
Access: Byte Read/Write
Register Name: RBPR
Register Description: Receive Bit-Rate Period
Default Value: x’81
Access: Byte Read/Write
Bit 7
Bit 7
0
Reception of an HDLC frame can be qualified with a matched 1- or 2-byte address field either as
four 1-byte alternatives or two 2-byte alternatives. Control of how the RFARs are used for address
recognition is detailed in the description of the CORs (see
CRC Polynomial Select Register (CPSR)
Bits 7:1
Bit 0
Bit Rate and Clock Option Registers
Receive Bit Rate Generator Registers
Receive Bit Rate Period Register (RBPR)
This register contains the preload value for the receive bit rate counter. When using an internal
clock option or an n-times external clock, the preload value, in conjunction with the receiver clock
source chosen, determines the receive bit rate. If a 1 external clock is used, a value of 01h must be
loaded in the RBPR.
Bit 6
Bit 6
0
Reserved – must be ‘0’.
Polynomial select
0 = CRC V.41 polynomial (normally used for HDLC protocol and preset to 1’s)
x**16 + x**12 + x**5 + 1
1= CRC-16 polynomial (generally used for Bisync but will work in HDLC mode,
preset to 0’s)
x**16 + x**15 + x**2 + 1
Bit 5
Bit 5
0
Receive Bit Rate Period (Divisor)
Bit 4
Bit 4
0
Multi-Protocol Communications Controller — CD2401
Bit 3
Bit 3
0
page 94
Bit 2
Bit 2
0
through
Motorola Hex Address: x’D6
Motorola Hex Address: x’CB
Bit 1
Bit 1
page
Intel Hex Address: x’D4
Intel Hex Address: x’C9
0
108).
Bit 0
Poly
Bit 0
113
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