参数资料
型号: 1215E
英文描述: TEST/JTAG SUPPORT|CMOS|QFP|48PIN|PLASTIC
中文描述: 测试/ JTAG支持|的CMOS | QFP封装| 48PIN |塑料
文件页数: 41/92页
文件大小: 1041K
代理商: 1215E
46
Agere Systems Inc.
User Manual
April 2001
Advanced Operational Mode
497AE and 1215E Boundary-Scan Master 2
Appendix B—BSM2 Register Descriptions (continued)
STAT: Status Register
Note:
In the case of the 28-pin package (479AE), the masking function (see CMU description register below
and the topic Masking USEROUTX in the part description above) has no function.
Purpose
Provides status information concerning whether the Test Data Memories (FIFOs) are full or empty (with masking
capability for these bits in the 1215E), the state currently recorded by the TAP State Tracker, the status (zero or
not) of the TVX counter and IDLE counter registers, the status of the most recently executed scan test (done or
not), and the current value of the USERIN signal (1215E only).
Address (Octal)
03
Format
Default (Binary)
STAT = 00000000
u1110101, where u is the value on the USERIN pin (1215E) or 1 (497AE).
Read-only Bits
All
Description
TVOU-1
(TVO Full - 1 Bit)—The value of this bit is 1 if and only if the TVO FIFO is exactly one word of data
short of full.
TVOM+1
(TVO Empty + 1 Bit)—The value of this bit is 1 if and only if the TVO FIFO contains exactly one word
of data.
TVIU-1
(TVI Full - 1 Bit)—The value of this bit is 1 if and only if the TVI FIFO is exactly one word of data short
of full.
TVIM+1
(TVI Empty + 1 Bit)—The value of this bit is 1 if and only if the TVO FIFO contains exactly one word of
data.
15
14
13
12
11—08
07
06
05
04
03
02
01
00
TVOU–1
TVOM+1 TVIU–1 TVIM+1 TAPS[03:00] USRN IDL0 TVX0 DONE TVOU TVOM TVIU TVIM
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