Lucent Technologies DSP1611, Information Manual

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Information Manual DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
April 1998 JTAG Test Access Port
Lucent Technologies Inc.
DRAFT COPY
11-17
11.3 Elements of the JTAG Test Logic
(continued)
11.3.6 The Device Identification Register—JIDR (continued)
A description of each field for the DSP1617/18/27/28/29 only follows:
The Manufacturer Identity Field: Bits 11—0 of the JIDR make up the manufacturer identity field containing a
compressed form of the JEDEC standard manufacturer's identification code. The assigned Lucent Technologies
identification code is 0x03B.
Part Number Field: Bits 18—12 contain the DSP1617/18/27/28/29 unique part number. The ROM code is con-
tained in bits 27—19.
The Version Field: Bits 31—28 contain the RESERVED, SECURE, and CLOCK fields as described in Table 11-5 .
A DR-scan cycle of the JIDR produces a 32-bit binary pattern with the LSB being shifted out first from the TDO dur-
ing the shift-DR state. The following table summarizes the fields of JIDR for the DSP1617/18/27/28/29 only.
Table 11-5. JIDR Field Descriptions DSP1617/18/27/28/29
Bit 31 30 29—28 27—19 18—12 11—0
Field RESERVED SECURE CLOCK ROMCODE PART ID 0x03B
Field Value Mask-Programmable Features
RESERVED 0
SECURE 0
1 Nonsecure ROM option.
Secure ROM option.
CLOCK 00
01
10
11 TTL level input clock option.
Small-signal input clock option.
Crystal oscillator input clock option.
CMOS level input clock option.
ROMCODE — Users ROMCODE ID:
The ROMCODE ID is the 9-bit binary value of the following expression:
(20 x value for first letter) + (value of second letter), where the values of the letters are in
the following table. For example, ROMCODE GK is
(20 x 6) + (9) = 129 or 0 1000 0001.
ROMCODE
LETTER A B C D E F G H J K L M N P R S T U W Y
VALUE
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
PART ID Part ID (HEX) Part ID (Binary)
DSP1617 0x18 0011000
DSP1618 0x19 0011001
DSP1618x24 0x1D 0011101
DSP1627 0x1C 0011100
DSP1627x32 0x2C 0101100
DSP1628x08 0x2A 0101010
DSP1628x16 0x2A 0101010
DSP1629x10 0x29 0101001
DSP1629x16 0x29 0101001