MCZ33989EG Freescale Semiconductor, MCZ33989EG Datasheet - Page 29

• Manufacturer Part Number: MCZ33989EG
• Description: IC SYSTEM BASIS CHIP CAN 28-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ33989EG

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 28-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SPI INTERFACE AND REGISTER DESCRIPTION
bits are used to identify the internal SBC register address. Bit
four is a read/write bit. The last four bits are Data Send from
MCU to SBC, or read back from SBC to MCU.
MISO.
a meaning (content of the accessed register).
register bit meaning.
condition. Reset condition is the condition causing the bit to
be set at the reset value.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Table 7
There is no significance during write operation state of
During read operation only the final four bits of MISO have
The following tables describe the SPI register list, and
Registers reset value is also described along with the reset
(1) If Stop mode entered, it is entered without watchdog, no matter the WDSTOP bit.
(E) Debug mode entry point (Step 5 of the Debug mode entering sequence).
(R) Represents transitions to Reset mode due to V DD1 low.
Table 7. Data Format Description
Stop (1)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
A2
illustrates a register, an 8-bit SPI. The first three
R
A1
Stop Debug
A0
R
Wake-up
R/W
D3
Normal Request
Stand-by Debug
Figure 16. Simplified State Machine in Debug Modes
D2
Stand-by
LOGIC COMMANDS AND REGISTERS
D1
D0
R
R
E
WD: Time-out 350 ms
R
SPI: Stand-by Debug
SPI: Normal Debug
(3.4 ms) Expired
Reset Counter
Read operation: R/W Bit = 0
Write operation: R/W Bit = 1
Possible reset conditions include:
SBC Reset:
SBC Mode Transition: NR2R - Normal Request to Reset Mode
SBC Mode:
E
R
Reset
Normal Debug
Normal
Power-On Reset POR
NR2N - Normal Request to Normal Mode
NR2STB - Normal Request to Standby
Mode
N2R - Normal to Reset Mode
STB2R - Standby to Reset Mode
STO2R - Stop to Reset Mode
STO2NR - Stop to Normal Request
RESET - SBC in Reset Mode
LOGIC COMMANDS AND REGISTERS
R
FUNCTIONAL DEVICE OPERATION
Wake-up
R
Sleep
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