参数资料
型号: B900J24PXX12I
元件分类: 数字信号处理
英文描述: 0-BIT, 80 MHz, OTHER DSP, PQFP44
文件页数: 100/100页
文件大小: 1547K
代理商: B900J24PXX12I
Advance Data Sheet
B900
July 1999
Baseband Signal Processor
Lucent Technologies Inc.
99
11
Ordering Information
This section describes the B900 device coding and mask-programmable options.
11.1 Device Coding
Table 115 defines each B900 part number character.
11.2 Mask-Programmable Options
The B900 contains a ROM that is mask-programmable (see Table 45 on page 56). Encoding a custom ROM
selects the following programming options:
s
The JTAG fields SLEWR, SECURE, BOPT, and ROMCODE.
s
ROM security. This option protects the internal ROM contents by not allowing access to the instruction/coefficient
memory map 3. Restricting access to memory map 3 makes it impossible to access IROM space when running
from IRAM space.
Table 115. B900 Device Coding
Part Number Character Positions (Left to Right)
1—4
5
6—7
8
9—10
11—12
13
14
B900
Family
Package
(M = PLCC
J = MQFP)
ROM Size
(Number
of 16-bit
Kwords)
Designator
(P = No
Designation,
F = Flash
ROM)
ROM Code ID
(AA—ZZ) or
Flash Pinout
Option
Instruction
Cycle
Time (ns)
Temperature
Class (– or
Blank =
Commercial,
I = Industrial)
Supply Voltage
[Blank (VDD = 4.5 V to 5.5 V)
or
T (VDD = 3.0 V to 3.6 V)]
B900
M or J
24
P
12
– or Blank
Blank
16
– or Blank
T
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