參數(shù)資料
型號: ISPPAC-POWR6AT6-01NN32I
廠商: LATTICE SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: In-System Programmable Power Supply Monitoring and Margining Controller
中文描述: 6-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32
封裝: 5 X 5 MM, LEAD FREE, QFN-32
文件頁數(shù): 19/34頁
文件大小: 906K
代理商: ISPPAC-POWR6AT6-01NN32I
Lattice Semiconductor
ispPAC-POWR6AT6 Data Sheet
19
Figure 14. I
2
C Read Operation
The ispPAC-POWR6AT6 provides 15 registers that can be accessed through its I
2
C interface. These registers pro-
vide the user with the ability to monitor and control the device’s inputs and outputs, and transfer data to and from
the device. Table 4 provides a summary of these registers.
Table 4. I
2
C Control Registers
I
2
C Closed-Loop Trim Register
Figure 15 shows bit assignments for the ispPAC-POWR6AT6 I
2
C closed-loop trim status register. There are six
read only bits (cltlock_status.in[1:6]) that reflect the present trim status of individual trim output pins. When a closed
loop-trim controlled power supply's output reaches the value specified by its Profile 0 configuration setting, that trim
output's CLTLOCK_status bit is set to a “1”.
The I
2
C closed-loop trim register has one read/write bit (cltlock_status). When ispPAC-POWR6AT6 is configured in
PAC-Designer to operate in SMBus Alert mode, it is set to a “1” by device control logic to send an SMBus Alert.
Logic then waits for it to be acknowledged by a host I
2
C processor (when it is addresses the register), completing
Register Address
Register Name
Read/Write
Description
Value on POR, RESET
0x00
cltlock_status
R/W
Closed-loop trim status
*bit-6 is RW, all others R only
ADC D[3:0] and status
ADC D[11:4]
ADC Attenuator and MUX[3:0]
UES[7:0]
UES[15:8]
UES[23:16]
UES[31:24]
Resets device on write
Trim DAC 1 [7:0]
Trim DAC 2 [7:0]
Trim DAC 3 [7:0]
Trim DAC 4 [7:0]
Trim DAC 5 [7:0]
Trim DAC 6 [7:0]
1100 0000
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
adc_value_low
adc_value_high
adc_mux
UES_byte0
UES_byte1
UES_byte2
UES_byte3
reset
trim1_trim
trim2_trim
trim3_trim
trim4_trim
trim5_trim
trim6_trim
R
R
0000 1110
0000 0000
1110 1000
EEEE EEEE
EEEE EEEE
EEEE EEEE
EEEE EEEE
1111 1111
1000 0000
1000 0000
1000 0000
1000 0000
1000 0000
1000 0000
R/W
R
R
R
R
W
R/W
R/W
R/W
R/W
R/W
R/W
Note: x = unknown, 0 = low, 1 = high, E= E
2
memory setting (UES string)
D5
D4
D3
D2
D1
D0
D6
D7
ACK
ACK
ACK
START
1
2
3
4
5
6
7
8
9
A6
A5
A4
A3
A2
A1
A0
R7
R6
R5
R4
R3
R2
R1
R0
1
2
3
4
5
6
7
8
9
DEVICE ADDRESS (7 BITS)
REGISTER ADDRESS (8 BITS)
SCL
SDA
R/W
STOP
START
1
2
3
4
5
6
7
8
9
A6
A5
A4
A3
A2
A1
A0
ACK
1
2
3
4
5
6
7
8
9
DEVICE ADDRESS (7 BITS)
READ DATA (8 BITS)
SCL
SDA
R/W
STOP
STEP 1: WRITE REGISTER ADDRESS FOR READ OPERATION
STEP 2: READ DATA FROM THAT REGISTER
Note: Shaded Bits Asserted by Slave
OPTIONAL
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