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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names of their respective companies. For patents covering National Instruments products, refer to the

appropriate location: Help»Patents in your software, the patents.txt file on your CD, or

ni.com/patents.

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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