AK2571 Datasheet, PDF (38/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

AKM Confidential
AK2571
CSN must be set for each instruction. It cannot be used continuously.
Digital I/F can connect directly to a SPI interface In this case, set (CPOL, CPHA) = (0, 0) or (1, 1).
(CPOL, CPHA) = (0, 0) : Status output through DO pin
(CPOL, CPHA) = (1, 1) : Status output disable
1.1 Register access [READ] mode （RDREG)
CSN
SK
1 2 3 4 5 6 7 8 11 12
17 18 27 28 29 30 31 32
DI
0 1 0 1 1 A5 A4 A3 A0 x
DO
High-Z
D15 D14 D13
D3 D2 D1 D0
1.2 Register access [WRITE] mode （WRREG）
CSN
SK
1 2 3 4 5 6 7 8 11 12
16 17 27 28 29 30 31 32
DI
0 1 0 1 0 A5 A4 A3 A0 x
x D15
D4 D3 D2 D1 D0
<Rev. 0.6E Preliminary>
-38-
2001/11