cp2200 Silicon Laboratories, cp2200 Datasheet - Page 75

• Manufacturer Part Number: cp2200
• Description: Single-chip Ethernet Controller
• Manufacturer: Silicon Laboratories

13.3. Flash Access Registers
The CP2200 Flash is accessed through the registers in Table 17. See the register tables following Table 17 for
detailed register descriptions
Register
FLASHSTA
FLASHKEY
FLASHADDRH
FLASHADDRL
FLASHDATA
FLASHAUTORD Flash AutoRead Data Register
FLASHERASE
Note: To determine when a Flash operation completes, the FLBUSY bit should be polled or software should
Bits 7–4: UNUSED. Read = 0000b, Write = don’t care.
Bit 3:
Bit 2:
Bit 1:
Bit 0:
R/W
Bit7
—
wait for the Flash Write/Erase Operation Complete Interrupt to occur.
FLBUSY: FLASH Busy Indicator
This bit indicates when a FLASH write or erase operation is in progress.
0: FLASH is idle.
1: FLASH write/erase operation is currently in progress.
Reserved.
FLWRITE: FLASH Write
0: The last Flash operation completed was not a Flash write.
1: The last Flash operation completed was a Flash write.
FLERASE: FLASH Erase
0: The last Flash operation completed was not a Flash erase.
1: The last Flash operation completed was a Flash erase.
R/W
Bit6
—
Flash Status
Flash Lock and Key
Flash Address Register High and
Low Bytes
Flash Read/Write Data Register
Flash Erase
Register 59. FLASHSTA: Flash Status Register
R/W
Bit5
—
Long Name
Table 19. Flash Access Register Summary
R/W
Bit4
—
FLBUSY Reserved FLWRITE FLERASE 00000000
Bit3
R
Rev. 1.0
Address
0x7B
0x05
0x6A
0x67
0x69
0x68
0x06
Bit2
R
Used to determine the status of a Flash write
or erase operation.
Write-only register allowing the host to
unlock the Flash for writing or erasing.
16-bit Address used for Flash operations.
Data register used for writing or reading a
single byte of Flash.
Data register used for reading a block of
sequential data stored in Flash. Each read
from this register increments the Flash
address register by 1.
Initiates a Flash erase operation.
Bit1
R
Description
Bit0
R
CP2200/1
Reset Value
Address:
0x7B
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