CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 46

• Manufacturer Part Number: CS8900-CQ3
• Description: Crystal LAN ISA Ethernet Controller
• Manufacturer: Cirrus Logic

4.3.11 EEPROM Command
(Read/Write, Address: PacketPage base + 0040h)
This register is used to control the reading, writing and erasing of the EEPROM. See Section 3.5.
ADD7-ADD0
OB1,OB0
ELSEL
Reserved
Reset value is: XXXX XXXX XXXX XXXX
4.3.12 EEPROM Data
(Read/Write, Address: PacketPage base + 0042h)
This register contains the word being written to, or read from, the EEPROM. See Section 3.5 on page 24.
Reset value is: XXXX XXXX XXXX XXXX
4.3.13 Receive Frame Byte Counter
(Read only, Address: PacketPage base + 0050h)
This register contains the count of the total number bytes received in the the current received frame. This count con-
tinuously increments as more bytes in this frame are received. See Section 5.2.9 on page 87.
Reset value is: XXXX XXXX XXXX XXXX
46
7
F
Most significant byte of the EEPROM data.
Most significant byte of the byte count.
ELCS pin is used to select the external LA decode circuit.
Address of the EEPROM word being accessed.
Indicates the Opcode of the command being executed. See Table 7.
External logic select: When clear, the EECS pin is used to select the EEPROM. When set, the
Reserved and must be written as 0.
6
E
Address 0043h
Address 0051h
Reserved
D
5
CIRRUS LOGIC PRODUCT DATA SHEET
C
4
ADD7 to ADD0
B
3
Least significant byte of the EEPROM data.
Crystal LAN™ ISA Ethernet Controller
Least significant byte of the byte count.
ELSEL
A
2
Address 0042h
Address 0050h
OB1
1
9
CS8900A
DS271PP3
OB0
0
8