Micro Controller User's Manual
Table Of Contents
- TMP92CZ26AXBG
- 1. Outline and Features
- 2. Pin Assignment and Pin Functions
- 3. Operation
- 3.1 CPU
- 3.2 Memory Map
- 3.3 Clock Function and Standby Function
- 3.4 Boot ROM
- 3.5 Interrupts
- 3.6 DMAC (DMA Controller)
- 3.7 Function of ports
- 3.7.1 Port 1 (P10 to P17)
- 3.7.2 Port 4 (P40 to P47)
- 3.7.3 Port 5 (P50 to P57)
- 3.7.4 Port 6 (P60 to P67)
- 3.7.5 Port 7 (P70 to P76)
- 3.7.6 Port 8 (P80 to P87)
- 3.7.7 Port 9 (P90 to P92, P96, P97)
- 3.7.8 Port A (PA0 to PA7)
- 3.7.9 Port C (PC0 to PC7)
- 3.7.10 Port F (PF0 to PF5, PF7)
- 3.7.11 Port G (PG0 to PG5)
- 3.7.12 Port J (PJ0 to PJ7)
- 3.7.13 Port K (PK0 to PK7)
- 3.7.14 Port L (PL0 to PL7)
- 3.7.15 Port M (PM1, PM2, PM7)
- 3.7.16 Port N (PN0 to PN7)
- 3.7.17 Port P (PP1 to PP7)
- 3.7.18 Port R (R0 to R3)
- 3.7.19 Port T (PT0 to PT7)
- 3.7.20 Port U (PU0 to PU7)
- 3.7.21 Port V (PV0 to PV4, PV6, PV7)
- 3.7.22 Port W (PW0 to PW7)
- 3.7.23 Port X (PX4, PX5 and PX7)
- 3.7.24 Port Z (PZ0 to PZ7)
- 3.8 Memory Controller (MEMC)
- 3.9 External Memory Extension Function (MMU)
- 3.10 SDRAM Controller (SDRAMC)
- 3.11 NAND Flash Controller (NDFC)
- 3.11.1 Features
- 3.11.1 Block Diagram
- 3.11.2 Operation Description
- 3.11.3 ECC Control
- 3.11.4 Description of Registers
- 3.11.5 An Example of Accessing NAND Flash of SLC Type
- 3.11.6 An Example of Accessing NAND Flash of MLC Type (When the valid data is processed as 518byte)
- 3.11.7 An Example of Connections with NAND Flash
- 3.12 8 Bit Timer (TMRA)
- 3.13 16 bit timer / Event counter (TMRB)
- 3.14 Serial Channels (SIO)
- 3.15 Serial Bus Interface (SBI)
- 3.16 USB Controller
- 3.16.1 Outline
- 3.16.2 900/H1 CPU I/F
- 3.16.3 UDC CORE
- 3.16.3.1 SFRs
- 3.16.3.2 EPx_FIFO Register (x: 0 to 3)
- 3.16.3.3 bmRequestType Register
- 3.16.3.4 bRequest Register
- 3.16.3.5 wValue Register
- 3.16.3.6 wIndex Register
- 3.16.3.7 wLength Register
- 3.16.3.8 Setup Received Register
- 3.16.3.9 Current_Config Register
- 3.16.3.10 Standard Request Register
- 3.16.3.11 Request Register
- 3.16.3.12 DATASET Register
- 3.16.3.13 EPx_STATUS Register (x: 0 to 7)
- 3.16.3.14 EPx_SIZE Register (x: 0 to 7)
- 3.16.3.15 FRAME Register
- 3.16.3.16 ADDRESS Register
- 3.16.3.17 EOP Register
- 3.16.3.18 Port Status Register
- 3.16.3.19 Standard Request Mode Register
- 3.16.3.20 Request Mode Register
- 3.16.3.21 COMMAND Register
- 3.16.3.22 INT_Control Register
- 3.16.3.23 USB STATE Register
- 3.16.3.24 EPx_MODE Register (x: 1 to 3)
- 3.16.3.25 EPx_SINGLE Register
- 3.16.3.26 EPx_BCS Register
- 3.16.3.27 USBREADY Register
- 3.16.3.28 Set Descriptor STALL Register
- 3.16.3.29 Descriptor RAM Register
- 3.16.4 Descriptor RAM
- 3.16.5 Device Request
- 3.16.6 Transfer mode and Protocol Transaction
- 3.16.7 Bus Interface and Access to FIFO
- 3.16.8 USB Device answer
- 3.16.9 Power Management
- 3.16.10 Supplement
- 3.16.11 Points to Note and Restrictions
- 3.17 SPIC (SPI Controller)
- 3.18 I2S (Inter-IC Sound)
- 3.19 LCD Controller (LCDC)
- 3.20 Touch Screen Interface (TSI)
- 3.21 Real time clock (RTC)
- 3.22 Melody / Alarm generator (MLD)
- 3.23 Analog-Digital Converter (ADC)
- 3.23.1 Control register
- 3.23.2 Operation
- 3.23.2.1 Analog Reference Voltages
- 3.23.2.2 Analog Input Channel(s) selection
- 3.23.2.3 Starting an AD Conversion
- 3.23.2.4 AD Conversion Modes and AD Conversion-End Interrupts
- 3.23.2.5 High-Priority Conversion Mode
- 3.23.2.6 AD Monitor Function
- 3.23.2.7 AD Conversion Time
- 3.23.2.8 Storing and Reading the AD Conversion Result
- 3.23.2.9 Data Polling
- 3.24 Watchdog Timer (Runaway detection timer)
- 3.25 Power Management Circuit (PMC)
- 3.26 Multiply and Accumulate Calculation Unit (MAC)
- 3.27 Debug Mode
- 4. Electrical Characteristics
- 4.1 Maximum Ratings
- 4.2 DC Electrical Characteristics
- 4.3 AC Characteristics
- 4.3.1 Basic Bus Cycle
- 4.3.2 Page ROM Read Cycle
- 4.3.3 SDRAM controller AC Characteristics
- 4.3.4 NAND Flash Controller AC Characteristics
- 4.3.5 Serial channel timing
- 4.3.6 Timer input pulse (TA0IN, TA2IN, TB0IN0, TB1IN0)
- 4.3.7 Interrupt Operation
- 4.3.8 USB Timing (Full-speed)
- 4.3.9 LCD Controller
- 4.3.10 I2S Timing
- 4.3.11 SPI Controller
- 4.4 AD Conversion Characteristics
- 5. Table of Special function registers (SFRs)
- 6. Package
TMP92CZ26A
92CZ26A-72
3.5.2 Micro DMA processing
In addition to general-purpose interrupt processing, the TMP92CZ26A also includes a
micro DMA function and HDMA function. This section explains about Micro DMA function.
For the HDMA function, please refer 3.23 DMA controller.
Micro DMA processing for interrupt requests set by micro DMA is performed at the
highest priority level for maskable interrupts (Level 6), regardless of the priority level of
the interrupt source.
Because the micro DMA function has been implemented with the cooperative operation
of CPU, when CPU is a state of standby (IDLE2,IDLE1,STOP) by HALT instruction, the
requirement of micro DMA will be ignored (Pending).
Micro DMA is supported 8 channels and can be transferred continuously by specifying
the micro DMA burst function in the following.
Note: When using the micro DMA transfer end interrupt, always write “1” to bit 7 of SIMC register.
(1) Micro DMA operation
When an interrupt request is generated by an interrupt source that specified by the
micro DMA /HDMA start vector register, and Micro DMA start is specified by DMA
selection register, the micro DMA triggers a micro DMA request to the CPU at
interrupt priority level 6 and starts processing the request. When IFF = 7, Micro DMA
request cannot be accepted.
The 8 micro DMA channels allow micro DMA processing to be set for up to 8 types of
interrupt at once.
When micro DMA is accepted, the interrupt request flip-flop assigned to that
channel is cleared. Data in 1byte or 2byte or4byte blocks is automatically transferred
at once from the transfer source address to the transfer destination address set in the
control register, and the transfer counter is decremented by “1”. If the value of the
counter after it has been decremented is not “0”, DMA processing ends with no change
in the value of the micro DMA start vector register. If the value of the decremented
counter is “0”, a micro DMA transfer end interrupt (INTTC0 to INTTC7) is sent from
the CPU to the interrupt controller.
In addition, the micro DMA /HDMA start vector register is cleared to “0”, the next
micro DMA operation is disabled and micro DMA processing terminates.
If an interrupt request is triggered for the interrupt source in use during the
interval between the time at which the micro DMA /HDMA start vector is cleared and
the next setting, general-purpose interrupt processing is performed at the interrupt
level set. Therefore, if the interrupt is only being used to initiate micro DMA /HDMA
(and not as a general-purpose interrupt), the interrupt level should first be set to 0
(e.g., interrupt requests should be disabled).
If micro DMA and general-purpose interrupts are being used together as described
above, the level of the interrupt which is being used to initiate micro DMA processing
should first be set to a lower value than all the other interrupt levels. In this case,
edge-triggered interrupts are the only kinds of general interrupts which can be
accepted.