MK50H28DIP datasheet(41/64 Pages) STMICROELECTRONICS

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4.3.1.4 Receive Message Descriptor 2 (RMD2)

BCNT<15:00>

BIT

NAME

DESCRIPTION

15:00

BCNT

Buffer Byte Count is the length of the buffer pointed to by this descriptor expressed

in two’s complement. This field is written to by the Host and unchanged by MK50H28.

The value of BCNT must be an even number. For LMI channels this field should be set to

greater than 14 bytes.

4.3.1.5 Receive Message Descriptor 3 (RMD3)

MCNT<15:00>

BIT

NAME

DESCRIPTION

15:00

MCNT

Message Byte Count is the length, in bytes, of the received signal unit. MCNT is valid

only when ELF is set to a one. MCNT is written by MK50H28 and read by the Host. If

ELF is set to a zero the entire buffer has been utilized and the message byte count is

given in BCNT above. The value of this field is expressed in two’s complement.

4.3.2 Transmit Message Descriptor Entry

4.3.2.1 Transmit Message Descriptor 0 (TMD0) For Non-LMI Channel

TBADR<23:16>

C/R

MK50H28

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