maxq7670aatl+ Maxim Integrated Products, Inc., maxq7670aatl+ Datasheet - Page 24

• Manufacturer Part Number: maxq7670aatl+
• Description: Microcontroller With 12-bit Adc, Pga, 64kb Flash, And Can Interface
• Manufacturer: Maxim Integrated Products, Inc.

Microcontroller with 12-Bit ADC,
PGA, 64KB Flash, and CAN Interface
Figure 9. CAN 0 Controller Block Diagram
The TAP controller communicates synchronously with
the host system (bus master) through four digital I/Os:
test mode select (TMS), test clock (TCK), test data
input (TDI), and test data output (TDO). The internal
TAP module consists of several shift registers and a
TAP controller (see Figure 11). The shift registers serve
as transmit-and-receive data buffers for a debugger.
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CAN 0 CONTROLLER BLOCK DIAGRAM
DUAL PORT MEMORY
MESSAGE CENTERS 1–15
CONTROL/STATUS/MASK REGISTERS
MEDIA ARBITRATION 0–1 EXT GLOBAL MASK 0–3
MESSAGE CENTER 1
MESSAGE CENTER 2
MESSAGE CENTER 14
MESSAGE CENTER 15
MEDIA ID MASK 0–1
BUS TIMING 0–1
ARBITRATION 0–3
ARBITRATION 0–3
ARBITRATION 0–3
ARBITRATION 0–3
FORMAT
FORMAT
FORMAT
FORMAT
DATA 0–7
DATA 0–7
DATA 0–7
DATA 0–7
STD GLOBAL MASK 0–1
MSG15 MASK 0–3
CAN PROCESSOR
CAN 0 PERIPHERAL REGISTERS
The MAXQ7670A includes a powerful hardware SPI
module, providing serial communication with a wide
variety of external devices. The SPI port on the
MAXQ7670A is a fully independent module that is
accessed through software. This full 4-wire, full-duplex
serial bus module supports master and slave modes.
CAN 0 TRANSMIT ERROR
CAN 0 RECEIVE ERROR
CAN 0 MESSAGE 1–15
CONTROL REGISTERS
CAN 0 DATA POINTER
8-BIT
CAN 0 DATA BUFFER
Rx
CAN INTERRUPT
MAXQ7670A
COUNTER
COUNTER
SOURCES
8-BIT
CHECK
Tx
CRC
BUS ACTIVITY WAKE-UP
DESTUFF
GENERATE
BIT
PROTOCOL
CRC
CAN
FSM
CAN 0 OPERATION CONTROL
CAN 0 INTERRUPT REGISTER
CAN 0 TRANSMIT MSG ACK
CAN 0 CONTROL REGISTER
CAN 0 RECEIVE MSG ACK
CAN 0 STATUS REGISTER
SHIFT
STUFF
Rx
BIT
TIMING
SHIFT
BIT
4-Wire SPI Bus
Tx
CANTXD
CANRXD