KEY CONCEPTS

_ Peripheral Sub8Y8tem_l_Peripheral Subsystem Interface<--lI-10+- 432 System - .

Port Object> (1)

Input ---......~.

 

 

I

~.~-----output

 

 

 

0

 

I

 

0

 

 

 

 

 

 

 

 

 

Message

1·"O""4:l

I"·1(M~~~:~!)I""

I··O

~____J~--"··~_B_u_~_~_e_r_~··IIf

-----

-----

Action

Data

Location

~~~~~!in9

::::;n9

C_o_p.Y D_a_ta

11....

C_O_p_Y_D_a_t_a__....11 Copy

Re f erence II

Copy Re fer ence

I

&.S.I/0 spac~

 

 

I

 

 

 

 

 

(P.S.

Memory

~1

 

4_3_2_S~y_s_t_em_._M_e_rn_D_r_____________Y . J

 

 

I ~1

 

 

 

~1

 

 

 

Device Task

 

I_p

C_o_n_t_ro_l_le r

~1

G_D_p p_r_o_c_e_s_s___~

'DeViCe Controller/ (2)I I

 

AP

+ IP (3)

I I...____GD P

--'

 

Notes: (1) Only object reference is moved to and from port.

(2)Supporting processor is defined by application; may be AP, a separate processor, may include a DMA controller.

(3)May also include a DMA controller.

Figure 1-6 I/O Data FICM Surnnary

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