NEC VRC4172 mPD31172 Manuals

Manuals and User Guides for NEC VRC4172 mPD31172. We have 1 NEC VRC4172 mPD31172 manual available for free PDF download: User Manual

NEC VRC4172 mPD31172 User Manual

NEC VRC4172 mPD31172 User Manual (177 pages)

Companion Chip for VR4121

Brand: NEC | Category: Microcontrollers | Size: 0.77 MB

Table of Contents

Table of Contents
9
Chapter 1 Overview

17
- Features
  17
- Ordering Information
  17
- VRC 4172 Processor
  18
- Internal Block Configuration
  19
- Registers of each Unit
  20
Chapter 2 Pin Functions

25
- Pin Configuration
  25
- List of Pin Functions
  29
- System Bus Interface Signals
  29
- USB Interface Signals
  30
- IEEE1284 Interface Signals
  30
- RS-232-C Interface Signals
  31
- PS/2 Interface Signals
  31
- General-Purpose Port Signal
  31
- General-Purpose Chip Select Signal
  31
- LCD Interface Signal
  31
- Clock Signals
  32
- Pin Statuses
  33
- Status of Pins under Specific Conditions
  33
- External Processing of Pins and Drive Performance
  35
- Recommended Connection of Unused Pins
  37
Chapter 3 Address Map

39
- Internal I/O Spaces
  40
- PCI Master Window (Memory)
  41
- PCI Configuration Cycle
  41
- PCI Host Controller
  45
- PCI Master Window (I/O)
  52
- PCI Slave Window (Memory)
  52
Chapter 4 Gpio (General-Purpose I/O Port)

53
- Register Set
  53
- EXGPDATA0 (0X1500 1080)
  54
- EXGPDIR0 (0X1500 1082)
  55
- EXGPINTEN0 (0X1500 1084)
  56
- EXGPINTST0 (0X1500 1086)
  57
- EXGPINTTYP0 (0X1500 1088)
  58
- EXGPINTLV0L (0X1500 108A)
  59
- EXGPINTLV0H (0X1500 108C)
  60
- EXGPDATA1 (0X1500 10C0)
  61
- EXGPDIR1 (0X1500 10C2)
  62
- EXGPINTEN1 (0X1500 10C4)
  63
- EXGPINTST1 (0X1500 10C6)
  64
- EXGPINTTYP1 (0X1500 10C8)
  65
- EXGPINTLV1L (0X1500 10CA)
  66
Chapter 5 Pcs (Programmable Chip Select)

67
- Register Set
  67
- EXCS Compare Address Registers
  68
- EXCS Address Mask Registers
  70
Chapter 6 Pwm Controller

73
- Register Set
  73
- LCDDUTYEN (0X1500 3880)
  74
- LCDFREQ (0X1500 3882)
  75
- LCDDUTY (0X1500 3884)
  76
Chapter 7 Pmu (Power Management Unit)

77
- Register Set
  77
- SYSCLKCTRL (0X1500 3800)
  78
- 1284CTRL (0X1500 3802)
  79
- 16550CTRL (0X1500 3804)
  80
- USBCTRL (0X1500 380C)
  81
- PS2PWMCTRL (0X1500 380E)
  82
- Clock Supply
  83
Chapter 8 Icu (Interrupt Control Unit)

85
- Register Set
  85
- 1284INTRQ (0X1500 3808)
  86
- 16550INTRQ (0X1500 380A)
  87
Chapter 9 Ieee1284 Parallel Controller

89
Chapter 10 16550 Serial Controller

105
- Register Set
  105
- RBR (0X1500 3810: LCR7 = 0, During Read)
  106
- THR (0X1500 3810: LCR7 = 0, During Write)
  106
- DLL (0X1500 3810: LCR7 = 1)
  107
- IER (0X1500 3812: LCR7 = 0)
  108
- DLM (0X1500 3812: LCR7 = 1)
  109
- IIR (0X1500 3814: During Read)
  111
- FCR (0X1500 3814: During Write)
  113
- LCR (0X1500 3816)
  114
- MCR (0X1500 3818)
  115
- LSR (0X1500 381A)
  116
- MSR (0X1500 381C)
  118
- SCR (0X1500 381E)
  119
Chapter 11 Usb Host Controller

121
Chapter 12 Ps/2 Controller

168
- Transmit Procedure
  168
Chapter 13 Connection with V R 4121

169
- Load Reduction Buffer Control
  169
- Cautions When Connecting Load Reduction Buffer
  170
Chapter 14 Interrupt Signals

171
Chapter 15 Reset

173
Chapter 16 Usage Cautions

175
- Power Supply Control
  175
- Reset Pins
  175
- Cautions on
  175
- Preserving SDRAM Data
  176
Appendix General Index

177

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