National Instruments NAT7210 Manuale utente
GPIB ASIC Reference Manual
Errata
The changes described in this document are important information for users
of the NAT7210 Reference Manual, the NAT9914 Reference Manual, and
the TNT4882 Programmer Reference Manual.
Contents
NAT7210 Reference Manual .................................................................. 1
NAT9914 Reference Manual .................................................................. 2
TNT4882 Programmer Reference Manual ............................................. 2
Appendix A ............................................................................................. 7
NAT7210 Reference Manual
• Page 4-3, first paragraph in The Page-In Condition section, replace the
existing text,
(offset 4)
with this new text,
(offset 2)
• Page 4-15, first paragraph, replace the existing text,
Note: Writes to the AUXCR
with this new text,
Note: Any register access following a write to the AUXCR
GPIB ASIC Reference Manual Errata 2 ni.com
• Page 4-46, replace both instances of the existing text,
ch_rst + read ISR0
with this new text,
ch_rst + (read ISR2)
NAT9914 Reference Manual
• Page 3-3, first paragraph in The Page-In Condition section, replace the
existing text,
(offset 4)
with this new text,
(offset 2)
• Page 3-15, first paragraph, replace the existing text,
Note: Writes to the AUXCR
with this new text,
Note: Any register access following a write to the AUXCR
• Page 3-46, replace both instances of the existing text,
ch_rst + read ISR0
with this new text,
ch_rst + (read ISR2)
TNT4882 Programmer Reference Manual
• Page 2-4, second paragraph, replace the text,
Accessory Read Register (ACCR)
with this text,
Auxiliary Command Register (AUXCR)
©National Instruments Corporation 3 GPIB ASIC Reference Manual Errata
• Page 3-64, the last paragraph under the Turbo+7210 Mode/
Turbo+9914 Mode section, replace the register name,
ACCR
with the register name,
AUXCR
• Page 3-67, in the paragraph for the Turbo+7210 Mode/Turbo+9914
Mode section, replace the register name,
ACCR
with the register name,
AUXCR
• Page 3-96, in the One-Chip Mode section, replace the existing text,
DO is a don’t care bit. Do not set DO IE. DO may read as 1 or 0
with this new text,
DO indicates that the TNT4882 is an Active Talker and the local
nba message is false, meaning there is no data in the FIFO to send.
• Page 3-109, replace both instances of the existing text,
chip_reset + read ISR0
with this new text,
ch_rst + (read ISR2)
• Page 3-118, at the top of the page, under Description, replace the
existing text,
NDAC for 700 ns
with this new text,
NDAC for at least 8 clock cycles
• Page 4-13, in the IEEE 488.2 Service Requesting section, replace the
existing text in that section with the following.
If STBO IE = 1, to request service, issue the reqt auxiliary
command. When the STBO interrupt condition becomes true,
GPIB ASIC Reference Manual Errata 4 ni.com
write the status byte (STB) to the SPMR with the appropriate
value for RQS.
If STBO IE = 0, to request service, issue the reqt auxiliary
command. Then, write the status byte (STB) to the SPMR. When
you write to the SPMR, write 0 to bit 6 (the rsv bit). The TNT4882
asserts and unasserts the rsv signal according to the set rsv state
machine that is described in the IEEE 488.2 standard.
After the CIC serial polls the TNT4882, you must issue the reqt
auxiliary command and write to the SPMR again to request
service. If you want to stop requesting service before a serial poll
occurs, issue the reqf auxiliary command.
• Page 4-14, in the Responding to Serial Polls section, second
paragraph, next-to-last sentence, replace the existing text,
totheSPMR(write0tobit6)
with this new text,
to the SPMR with the appropriate value for RQS
©National Instruments Corporation 5 GPIB ASIC Reference Manual Errata
• Page C-22, replace the existing Figure C-7 with the following figure,
Figure 1. New Figure C-7 for Page C-22
• Page D-9, in the System Configuration section, third paragraph, second
sentence, replace the existing text,
1E hex
with this new text,
0x1F
• Page D-9, following the System Configuration section, insert the
contents of Appendix A of this document, to create a new section
entitled Operation.
System Controller GPIB Device
UNListen (UNL)
Controller Listen Address
Serial Poll Enable (SPE)
Device Talk Address
Read (IBRD) Serial Poll
Byte from Device
Serial Poll Disable (SPD)
UNTalk (UNT) All Devices
Turns off Serial Poll Mode
Serial Poll Byte Returned
Device Set as Talker
Generates Serial Poll Byte
GPIB ASIC Reference Manual Errata 6 ni.com
• Page F-2, the last line of the Multiline Interface Command Messages
section, add to the existing text,
1F 037 31 US
by inserting this new text,
CFE in the Msg column
• Page F-2, under Message Definitions, add these two new messages to
the existing text,
• Page F-3, the table on the right-hand side of the page, which begins
with a Hex value of 60, insert the data in bold-face type as shown in
Table 1.
Table 1. New data in bold for Table on Page F-3, Right-Hand Side
CFE Configure Enable
CFG Configure
Hex Oct Dec ASCII Msg
60 140 96 ` MSA0,PPE
61 141 97 a MSA1,PPE,CFG1
62 142 98 b MSA2,PPE,CFG2
63 143 99 c MSA3,PPE,CFG3
64 144 100 d MSA4,PPE,CFG4
65 145 101 e MSA5,PPE,CFG5
66 146 102 f MSA6,PPE,CFG6
67 147 103 g MSA7,PPE,CFG7
68 150 104 h MSA8,PPE,CFG8
69 151 105 i MSA9,PPE,CFG9
6A 152 106 j MSA10,PPE,CFG10
6B 153 107 k MSA11,PPE,CFG11
6C 154 108 l MSA12,PPE,CFG12
6D 155 109 m MSA13,PPE,CFG13
6E 156 110 n MSA14,PPE,CFG14
6F 157 111 o MSA15,PPE,CFG15
©National Instruments Corporation 7 GPIB ASIC Reference Manual Errata
Appendix A
Insert the contents below to create a new section following the System
Configuration section on Page D-9 of the TNT4882 Programmer Reference
Manual.
Operation
Configuring the System Cable Length
To use HS488 transfers, a Controller sends the CFE command followed by
a CFGn command.
Responding to System Cable Length Configuration
HS488 devices (including the Controller) must recognize and respond to
the system cable length commands (CFE and CFGn). The software must
recognize the CFE and CFGn commands and implement the CF interface
function. Unlike other GPIB commands, the TNT4882 does not
automatically respond to these commands. The software must assist the
hardware.
To implement the CF interface function set AUXRB[CPT_ENABLE] and
IMR1[CPT IE] to interrupt on undefined commands.
ISR1[CPT] sets when an undefined “primary” command is received. When
an undefined primary command is received, CPT also sets on all secondary
commands until a defined primary command is received. Each time the
ISR1[CPT] sets, execute the following algorithm:
1. Read the command byte from the CPTR
2. If the command is CFE (0x1F) then
a. Disable HS488 as described in the following section Disabling
HS488
b. Write 0xDF to AUXRF to hold off on all commands
3. Otherwise, if the command is a PCG command other than CFE then
a. Write 0xD0 to AUXRF to clear hold off on all commands
b. Clear AUXRB[CPT_ENABLE], then set
AUXRB[CPT_ENABLE]
4. Otherwise, if (0x61 ≤command ≤0x6F)
a. Subtract 0x60 from command to calculate cable length
b. Enable HS488 with Cable Length as described in the following
section, Enabling HS488
5. Write AUXMR[VALID] to release DAC hold off
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Enabling HS488
To enable HS488, first write 0x1C to NIC_DELAY. Then, set HIER[DG],
HIER[NO_TSETUP], DIO_SETUP and DAV_HOLD according to the
following table. Finally, set MISC[HSE].
Disabling HS488
To disable HS488 clear MISC[HSE] and write 0x3 to HIER[DG].
Clearing IMR1[CPT IE] and AUXRB[CPT_ENABLE] causes HS488
configuration commands to be ignored.
Cable
Length HIER[DG] HIER[NO_TSETUP] DIO_SETUP[4:0] DAV_HOLD[4:0]
1 0x0 1 0x0 0x0
2 0x0 1 0x0 0x0
3 0x0 0 0x0 0x2
4 0x2 0 0x0 0x2
5 0x2 0 0x2 0x4
6 0x2 0 0x2 0x4
7 0x2 0 0x2 0x4
8 0x3 0 0x4 0x6
9 0x3 0 0x4 0x6
10 0x3 0 0x6 0x8
11 0x3 0 0x6 0x8
12 0x3 0 0x6 0x8
13 0x3 0 0x9 0xB
14 0x3 0 0x9 0xB
15 0x3 0 0x9 0xB
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