HI-6121PQMF HOLTIC [Holt Integrated Circuits], HI-6121PQMF Datasheet - Page 32

• Manufacturer Part Number: HI-6121PQMF
• Description: MIL-STD-1553 Remote Terminal ICs
• Manufacturer: HOLTIC [Holt Integrated Circuits]

COMMAND ILLEGALIZATION TABLE, Cont.
TEMPORARY RECEIVE DATA BUFFER
Address
0x01BE
0x01FF
0x01C1
0x01FE
0x01C0
0x01BF
0x017E
0x013E
The 32-word temporary receive data buffer resides in
shared RAM in address space 0x0020 to 0x003F.
device optionally uses this buffer for temporary storage of
receive data words until successful message completion.
To enable the buffer, the host asserts the TRXDC bit in
Configuration Register 2.
the 32-word buffer during message processing. Upon
error-free message completion, all buffered words are
written in a burst to the data buffer memory assigned to the
specific subaddress in the Descriptor Table.
When the
negated, t
0x0181
0x0180
0x017F
0x0141
0x0140
0x013F
0x0101
0x0100
When enabled, the terminal stores received data words in
RAM
and
and
and
and
and
and
and
and
Br.Rx MC31 - MC16
Br.Tx MC31 - MC16
Br.Rx MC15 - MC0
Br.Tx MC15 - MC0
he temporary receive data buffer is disabled. At
Rx MC31 - MC16
Tx MC31 - MC16
Rx MC15 - MC0
Tx MC15 - MC0
TRXDB bit in Configuration Register 2 is
FIGURE 5. Summary of Illegalization Table Addresses for Mode Code Commands
Transmit
Mode Commands
With Data
Transmit
Mode Commands
Without Data
Receive
Mode Commands
With Data
Receive
Mode Commands
Without Data
Broadcast Transmit
Mode Commands
With Data
Broadcast Transmit
Mode Commands
Without Data
Broadcast Receive
Mode Commands
With Data
Broadcast Receive
Mode Commands
Without Data
HOLT INTEGRATED CIRCUITS
Bit No.
Status
Status
Status
Status
Status
Status
Status
Statu
MC #
MC #
MC #
MC #
MC #
MC #
MC #
MC #
HI-6120, HI-6121
s
The
15 14 13 12 11 10 9
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
15 14 13 12 11 10 9
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
15 14 13 12 11 10 9
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
15 14 13 12 11 10 9
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
15 14 13 12 11 10 9
R
R
R
U
R
R
R
U
LEGEND
D = Defined Mode Command
U = Undefined Mode Command
32
R
R
R
U
R
R
R
U
R
R
R
U
R
R
R
U
20us intervals, the terminal writes received data words to
assigned subaddress data buffer memory as each word is
received. If message error occurs during data reception,
data integrity is lost; valid data from the prior receive
message may be partially overwritten by data from a
message ending in error. MIL-STD-1553 states that all
received data from messages ending in error
disregarded
accessed by the host, although there is no restriction
preventing host data access. The host should never write
data into the temporary buffer space.
In a typical application, the temporary buffer is not directly
R
R
R
U
R
R
R
U
R
R
R
U
R
R
R
U
R
R
R
U
R
R
R
U
.
R
R
R
U
R
R
R
U
R
D
R
U
R
D
R
U
8
8
8
8
8
R
D
R
U
R
D
R
U
7
7
7
7
7
NB = Defined Code, But
R
D
R
U
R
D
R
U
R = Reserved Mode Code
6
6
6
6
6
U
D
D
U
U
D
D
U
5
5
5
5
5
Broadcast Not Allowed
U
D
D
U
U NB NB U NB
D
D
U
4
4
4
4
4
D
D
U
U
D NB D NB
U
U
3
3
3
3
3
D
D
U
U
U
U
2
2
2
2
2
should be
U
D
D
U
D
U
1
1
1
1
1
D
D
U
U
U
U
0
0
0
0
0