Pioneer VSX-321-K-P Service Manual page 27

5
8952VS3210020-IL (EPF021A) (D-MAIN ASSY: IC201)
Generic Microcontroller Unit
• Pin Arrangement (Top View)
TIM[0]
TIM[1]
• Block Diagram
5
6
P2[1]
49
P2[2]
50
51
P2[3]
P2[4]
52
P2[5]
53
P2[6]
54
P2[7]
55
56
57
58
P1[0]
59
P1[1]
P1[2]
60
P1[3] 61
P7[0]
62
P7[1] 63
P4[0] 64
Port 0
Port 1
KBI
8051 Core
Port 2
Port 3
LVI
IIC
PMU
Port 4
ICP
Ex. Int.
Port 5
Hi Current
Port 6
Hi Current
Port 7
UART/CIR
Port 8
PWM
8-bit PWM x 2
6
7
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
256B Direct
Data RAM
3KB Aux.
Timer x 4
Data RAM
64KB Flash
10-bit ADC x 2
WDT
USB 1.1
UART
IIC x 2
CIR
HTP-071
7
8
P0[5]
P0[4]
P0[3]
P0[2]
P0[1]
P0[0]
P5[7]
P5[6]
P5[5]
P5[4]
P5[3]
P5[2]
P5[1]
P5[0]
P7[4](CIR)
VSS
SPI
8
A
B
C
D
E
F
27