HI-6120 HOLTIC [Holt Integrated Circuits], HI-6120 Datasheet - Page 20

• Manufacturer Part Number: HI-6120
• Description: MIL-STD-1553 Remote Terminal ICs
• Manufacturer: HOLTIC [Holt Integrated Circuits]

5. REGISTERS
Residing at the start of the memory address space, 32 addresses are reserved for HI-6120 and HI-6121 registers.
Register addresses overlay the shared RAM address space, but are separate from the shared dual-port RAM. All
register bits are active high. Unless otherwise indicated, all registers are reset in software to the logic zero condition
after Master Reset (except any bits reflecting the state of input pins). For all registers, bit 15 is the most significant.
Register
Number
26-31
11-14
10
15
16
17
18
19
20
21
22
23
24
25
0
1
2
3
4
5
6
7
8
9
0x000B-0x000E Reserved
0x001A-0x001F
Hex Address
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x000A
0x000F
0x0010
0x0012
0x0013
0x0014
0x0015
0x0016
0x0017
0x0018
0x0019
0x0011
Table 4. Register Summary
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
Register Name
Configuration Register 1
Configuration Register 2
Operational Status Register
Current Command Register
Current Control Word Address Register
Descriptor Table Base Address Register
Pending Interrupt Register
1553 Status Word Bits Register
Time-Tag Register
Interrupt Log Address Register
Current Message Information Word Address Register
Memory Address Pointer (HI-6121 Only)
Interrupt Enable Register
Time-Tag Utility Register
Bus A Select Register
Bus B Select Register
Built-In Test (BIT) Word Register
Alternate Built-In Test (BIT) Word Register
Reserved
Test Control Register
Loopback Test Transmit Data Register
Loopback Test Receive Data Register
Reserved
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