W681307DG Datasheet, PDF (142/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
17.2.2
EEPROM_Config
Address
0x1741
Access Mode Value At Reset Nominal Value
R/W
0x00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
RESERVED RESERVED RESERVED RESERVED RESERVED
This register is used for W2S bus read cycle.
EEPROM_Format is used for different Page Mode:
EEPROM_format
Page Mode
00
8-byte
01
16-byte
10
32-byte
11
RESERVED
HEADER bit is used to support different page size of EEPROM.
“0” is for C16, “1” is for C32/64/128/256
Bit 2
Bit 1
EEPROM_Format
Bit 0
HEADER
17.2.3
Prescale_Lo
Address
0x1742
Access Mode Value At Reset Nominal Value
R/W
0x00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Prescale_Lo
This register is used to control W2S bus speed, companion with Prescale_Hi register.
For 100KHz W2S bus operation, set Prescale_Lo to 22H, and Prescale_Hi to 00H.
17.2.4
Prescale_Hi
Address
0x1743
Access Mode Value At Reset Nominal Value
R/W
0x00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Prescale_Hi
This register is used to control W2S bus speed, companion with Prescale_Lo register.
For 100KHz W2S bus operation, set Prescale_Lo to 22H, and Prescale_Hi to 00H.
Prescale Reg. Value
W2S Bus Clock
0x0068
33 KHz
0x0034
66 KHz
0x0022
100 KHz
0x0019
133 KHz
0x0014
166 KHz
0x0006
500 KHz
System Clock: 13.824 MHz
W2S
Bus
Clock
=
System Clock
4 × (Prescale + 1)
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Publication Release Date: May, 2007
Revision 1.3