CC-2401K2A-CS Copeland Communications Inc, CC-2401K2A-CS Datasheet - Page 25

• Manufacturer Part Number: CC-2401K2A-CS
• Description: MODEM 2400BAUD SECURE 3.3V
• Manufacturer: Copeland Communications Inc

Specifications of CC-2401K2A-CS

• Data Format: V.21, V.22, V.23, Bell 103
• Baud Rates: 2.4k
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: Module
• For Use With: 539-1002 - KIT EVALUATION WORLD MODEM II
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 539-1010; CC-2401K2A-CS

Low Level DSP Control
© 2007, Copeland Communications, Inc.
Although not necessary for most applications, the low-level control functions are available for very specific
applications requiring direct DSP control.
DSP registers
Several DSP registers are accessible through the CC-2401 controller via S-registers. SE5, SE6 and SE8 are
used to write data to specific DSP registers and read status. SE8 defines the function of SE5 and SE6
depending on whether they are being written or read from. Care must be exercised when writing to DSP
registers. DSP registers can only be written while the CC-2401 is on hook and in command mode. Writing to
any register address not listed or writing out of range values is likely to cause the DSP to exhibit unpredictable
behavior.
The DSP register address is 16 bit, and the DSP data field is 14 bits wide. DSP register addresses and data
are written in hexadecimal. To write a value to a DSP register the register address is written and then the
data. When SE8 = 0x00, SE5(DADL) is written with the low bits [7:0] of the DSP register address, and
SE6(DADH) is written with the high bits ([15:8]) of the data word corresponding to the previously written
address.
Page 25 of 66
Data Sheet
CC-2401K2 Datasheet Rev 1.5
CC-2401K2