ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 47

• Manufacturer Part Number: ltc2978
• Description: Octal Pmbus Power Supply Monitor And Controller With Eeprom
• Manufacturer: Linear Technology Corporation

Data is logged into memory in the order shown in the
following table.
When data is returned during a block read it is returned in
reverse order based on the value of Position_last[7:0]. Data
byte Read_vout0[7:0] is followed by Status_mfr of page 7.
Example: If Position_last = 9 then the first data returned in
byte position 47 of a block read is Read_vin[15:8] followed
by Read_vin[7:0] followed by Status_mfr of page 1.
operaTion
POSITION
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
DATA
Read_vout0[7:0]
Read_vout0[15:8]
Status_vout0
Status_mfr0
Read_vout1[7:0]
Read_vout1[15:8]
Status_vout1
Status_mfr1
Read_vin[7:0]
Read_vin[15:8]
Status_vin
Reserved
Read_vout2[7:0]
Read_vout2[15:8]
Status_vout2
Status_mfr2
Read_vout3[7:0]
Read_vout3[15:8]
Status_vout3
Status_mfr3
Read_temperature_1[7:0]
Read_temperature_1[15:8]
Status_temp
Reserved
Read_vout4[7:0]
Read_vout4[15:8]
Status_vout4
Status_mfr4
Read_vout5[7:0]
Read_vout5[15:8]
Status_vout5
Status_mfr5
MFR_COMMON
This command returns status information for the share-
clock pin (SCLK) and the write-protect pin (WP).
MFR_COMMON Data Contents
MFR_SPARE0
This 16-bit wide registers can be used to store miscel-
laneous information. The contents of these registers
may be stored and recalled from EEPROM using the
STORE_USER_ALL and RESTORE_USER_ALL com-
mands, respectively.
MFR_SPARE2
These 16-bit wide, paged registers can be used to store
miscellaneous information. The contents of these reg-
isters may be stored and recalled from EEPROM using
the STORE_USER_ALL and RESTORE_USER_ALL com-
mands, respectively.
BIT(S)
b[7:2]
b[1]
b[0]
POSITION
SYMBOL
Reserved
Mfr_common_
share_clk
Mfr_common_
write_protect
32
33
34
35
36
37
38
39
OPERATION
Read only, always returns 0s
Returns status of share-clock pin
1: Share-clock pin is being held low
0: Share-clock pin is active
Returns status of write-protect pin
1: Write-protect pin is high
0: Write-protect pin is low
DATA
Read_vout6[7:0]
Read_vout6[15:8]
Status_vout6
Status_mfr6
Read_vout7[7:0]
Read_vout7[15:8]
Status_vout7
Status_mfr7
Total Bytes =40
LTC2978

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