CDK8920A View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CDK8920A' PDF : 144 Pages View PDF
CS8920A
Bus Interface Register:
EEPROM Command (Read/Write)
F-A
9
Reserved
OB1
Address: PacketPage base + 0040h
8
7-0
OB0
ADD7 to ADD0
This register is used to control the reading, writing, and erasing of the EEPROM. See Section 3.6.
BIT NAME
DESCRIPTION
7-0 ADD7-
ADD0
Address of the EEPROM word being accessed.
9-8 OB1,OB0 Indicates the Opcode of the command being executed. See Table 3.7.
F-A Reserved Reserved and must be written as 0.
This register’s initial state after reset is: XXXX XXXX XXXX XXXX
Bus Interface Register:
EEPROM Data (Read/Write)
Address 0043h
Most-significant byte of EEPROM data.
Address: PacketPage base + 0042h
Address 0042h
Least-significant byte of the EEPROM data.
This register contains the word being written to, or read from, the EEPROM. See Section 3.6.
This register’s initial state after reset is: XXXX XXXX XXXX XXXX
Bus Interface Register:
Receive Frame Byte Counter (Read only)
Address 0051h
Most-significant byte of byte count.
Address: PacketPage base + 0050h
Address 0050h
Least-significant byte of the byte count.
This register contains the count of the total number of bytes received in the the current received frame. This
count continuously increments as more bytes in this frame are received. See Section 5.2.9.
This register’s initial state after reset is: XXXX XXXX XXXX XXXX
44
DS238PP2
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