LAN9312 datasheet(145/458 Pages) SMSC

145 / 458 page

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

SMSC LAN9312

145

Revision 1.2 (04-08-08)

DATASHEET

10.2.3.2

ERASE (Erase Location)

If erase/write operations are enabled in the EEPROM, this command will erase the location selected

by the EPC_ADDRESS field of the EEPROM Command Register (E2P_CMD). The EPC_TIMEOUT

bit is set if the EEPROM does not respond within 30mS.

EWDS

0 0 X X X X X X X

Hi-Z

EWEN

1 1 X X X X X X X

Hi-Z

READ

A8 A7 A6 A5 A4 A3 A2 A1 A0

D7 - D0

WRITE

A8 A7 A6 A5 A4 A3 A2 A1 A0

D7 - D0

(RDY/~BSY)

WRAL

0 1 X X X X X X X

D7 - D0

(RDY/~BSY)

Table 10.6 Microwire Command Set for 11 Address Bits

INST

START

BIT

OPCODE

ADDRESS

DATA TO

EEPROM

DATA FROM

EEPROM

# OF

CLOCKS

ERASE

A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

(RDY/~BSY)

ERAL

1 0 X X X X X X X X X

(RDY/~BSY)

EWDS

0 0 X X X X X X X X X

-Hi-Z

EWEN

1 1 X X X X X X X X X

-Hi-Z

READ

A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

-D7 - D0

WRITE

A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

D7 - D0

(RDY/~BSY)

WRAL

0 1 X X X X X X X X X

D7 - D0

(RDY/~BSY)

Figure 10.7 EEPROM ERASE Cycle

Table 10.5 Microwire Command Set for 9 Address Bits (continued)

INST

START

BIT

OPCODE

ADDRESS

DATA TO

EEPROM

DATA FROM

EEPROM

# OF

CLOCKS

EECLK

EEDI

EEDO

EECS

LAN9312 Datasheet(PDF) 145 Page - SMSC Corporation

LAN9312 Datasheet(HTML) 145 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL