circuit.txt

通过JTAG 控制 ARM9 核的一个程序

Simple JTAG interface circuit.
==============================

PL1 25wayD Male                                                 PL2 20wayIDC

PL1/17-25 <--------------+-------------------------+--+-----------<  PL2/4,6,8,
                         |                         |  |              10,12,14,
                         |    AC244          200nF =  = 4.7uF        16,18,20
                         | +------------+  Vcc     |  |
         TDI          0v +-| 1       20 |-+--------+--+-----------<  PL2/1,2
PL1/5  >-------------------| 2       19 |-+
         TMS               | 3       18 |-----XXXX---------------->  PL2/5
PL1/3  >-------------------| 4       17 |     51R     
         TCLK              | 5       16 |-----XXXX---------------->  PL2/7
PL1/4  >-------------------| 6       15 |     51R
                           | 7       14 |-----XXXX---------------->  PL2/9
                      +----| 8       13 |     51R
                      |    | 9       12 |-----XXXX---+
                      |  +-| 10      11 |     51R    |
                      |  | +------------+            |
                      |  V 0v                        |
                      +------------------------------------------<   PL2/13
         TDO                                         |
PL1/11 <---------------------------------------------+


                            DTC114   /-------xxxx----------------<   PL2/15
         RST            10k       | /        51R
PL1/2  >----------------XXXX--+---|<
                              |   | \
                              X      V
                         47k  X      |  
                              X      |
                              |      |
                              V 0v   V