ERM HR C6000, Руководство пользователя

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1100 0
1011 0
1110 0
1111 0
To transmit data in Layer 2 mode, the user needs to prepare the content of the data frame to be sent
in the next time slot according to the type of the transmitted frame. If it is the frame type already
defined in the above table, the user can determine the user to complete the verification process
corresponding to these frame types or the check digit generation process of the frame automatically
by HR_C6000 through the bit 3 of the configuration register Reg40. If it is automatically completed
by HR_C6000, the checksum generation process is strictly in accordance with the DMR protocol
standard; if the user performs verification in the MCU, the HR_C6000 does not need to care about
the verification mode and the check code content, but directly according to the original data. The
next step is encoding. For example, if the user needs to have an MCU to complete a CSBK
verification process, it needs to first generate 80bit CSBK data information, and then generate a 16-
bit parity bit according to a self-defined verification method, and write a total of 96 bits of
information to the address of the transmission RAM of the HR_C6000. - Address 11, then
HR_C6000 takes this data directly for BPTC encoding and subsequent framing. If it is a user-
defined frame type, the verification information bits generated by the verification are stored in the
specified location of the RAM space of the transmitting end, and the HR_C6000 uses the
verification information as part of the transmission information bit to enter the subsequent encoding
and Framing processing. The schematic diagram of the sending process is shown below.
Idle Configuratio
n completed
waiting
send request Waiting to
send Sys_inter
Configure
the send
frame type
and send the
data to the
RAM space. Send enable
open time
slot
establishmen
t Time_slot_
inter Identificatio
n
interruption By reading
Reg0x82
information
Send
configuratio
n
preparation sending Send start
interrupt
Configuratio
n completed Time_slot_
inter Identify
subinterrupt
type By reading
Reg0x86
information
Configuratio
n completed Correct Send
completed Deny Layer 2
mode