HI-6120 HOLTIC [Holt Integrated Circuits], HI-6120 Datasheet - Page 30
HI-6120
Manufacturer Part Number
HI-6120
Description
MIL-STD-1553 Remote Terminal ICs
Manufacturer
HOLTIC [Holt Integrated Circuits]
Datasheet
1.HI-6120.pdf
(157 pages)
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5.4.
This 16-bit register is Read-Only and is fully maintained by the device.
NOTE: ‘Reset’ refers to bit value following Master Reset (MR). This register is unaffected by software reset.
5.5.
This 16-bit register is Read-Only and is fully maintained by the device.
NOTE: ‘Reset’ refers to bit value following Master Reset (MR). This register is unaffected by software reset.
5.6.
This 16-bit register is Read-Write and is fully maintained by the host. This register is loaded with 0x0200 after MR
pin master reset or SRST software reset. The host maintains this register to specify the starting address for the
Descriptor Table. For fast context switching, the host may initialize multiple Descriptor Tables, then update this register
to load the new base address when the active Descriptor Table changes. The base address must be chosen with bits
7:0 = 00000000. These bits (and the highest address bit) cannot be set in the register. The primary Descriptor Table
MSB
MSB
MSB
Bit No.
Bit No.
15-0
15-0
15 14 13 12 11 10
15 14 13 12 11 10
15 14 13 12 11 10
C
A
0
Current Command Register (0x0003)
Current Control Word Address Register (0x0004)
Descripter Table Base Address Register (0x0005)
C
A
A
Mnemonic R/W Reset Function
CC15:0
Mnemonic R/W Reset Function
CCW15:0
CURRENT CONTROL WORD ADDRESS 15:0
C
A
A
DESCRIPTOR TABLE BASE ADDRESS 15:0
C
A
A
C
A
A
CURRENT COMMAND 15:0
C
A
A
R
R
C
A
9
A
9
9
C
A
0
8
8
8
0
0
C
A
0
7
7
7
C C
A A
0
6
6
6
Current Command Word.
This register contains the last valid command received over either MIL-
STD-1553 bus. This register is updated 5us after the ACTIVE output is as-
serted. Bit 15 is MSB.
Current Control Word Address Register
This register contains the address for the descriptor table Control Word cor-
responding to the current command stored in the Current Command Register
(0x0003). This register is updated 5us after the ACTIVE output is asserted.
Bit 15 is MSB. Also see “Current Message Information Word Address” regis-
ter, 0x000A.
5
5
0
5
HOLT INTEGRATED CIRCUITS
C
A
4
4
4
0
HI-6120, HI-6121
C
A
3
3
3
0
C
A
2
2
0
2
C C
A
1
1
0
1
A
0
0
0
0
30
LSB
LSB
LSB
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