參數(shù)資料
型號(hào): ADSP-TS203S
廠商: Analog Devices, Inc.
英文描述: TigerSHARC Embedded Processor
中文描述: TigerSHARC系列嵌入式處理器
文件頁(yè)數(shù): 16/40頁(yè)
文件大?。?/td> 609K
代理商: ADSP-TS203S
Rev. PrB
|
Page 16 of 40
|
December 2003
ADSP-TS203S
Preliminary Technical Data
Table 9. Pin Definitions—JTAG Port
Signal
EMU
Type
O/OD
Term
nc
1
Description
Emulation. Connected to the DSP’s JTAG emulator target board connector only.
TCK
TDI
I
I
(pu_ad)
O/T
epd or epu
1
nc
1
Test Clock (JTAG). Provides an asynchronous clock for JTAG scan.
Test Data Input (JTAG). A serial data input of the scan path.
TDO
nc
1
Test Data Output (JTAG). A serial data output of the scan path.
TMS
I
(pu_ad)
I/A
(pu_ad)
nc
1
Test Mode Select (JTAG). Used to control the test state machine.
TRST
au
Test Reset (JTAG). Resets the test state machine. TRST must be asserted or pulsed low
after power up for proper device operation. For more information, see
Reset and
Booting on page 9
.
I
= input;
A
= asynchronous;
O
= output;
OD
= open drain output;
T
= Three-State;
P
= power supply;
G
= ground;
pd
= internal pulldown 5 k
;
pu
= internal pullup 5 k
;
pd_0
= internal pulldown 5 k
on DSP ID=0;
pu_0
= internal pullup 5 k
on DSP
ID=0;
pu_od_0
= internal pullup 500
on DSP ID=0;
pd_m
= internal pulldown 5 k
on DSP bus master;
pu_m
= internal pullup 5 k
on DSP
bus master;
pu_ad
= internal pullup 40 k
; For more pulldown and pullup information, see
Electrical Characteristics on page 21
Term (for termination) column symbols:
epd = External pull-down approximately 5 k
to V
SS
; epu = External pull-up approximately 5 k
to V
DD_IO
, nc = Not connected; au = Always used.
1
See the reference
on page 11
to the JTAG emulation technical reference EE-68.
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