ASAHI KASEI
[AK2572]
2. Operation Setting
The AK2572 can operate following functions as shown in Table 2-1 by EEPROM / Register setting. For further
details, please refer to the circuit description at the next page and thereafter.
Table 2-1 AK2572 Operation Setting
Set-up
1
Related setting
RE_BURST_SET
RE_SFP_SET [*3]
RE_PWR_LVL1_SET [*3]
RE_PWR_LVL2_SET
RE_APC_FF_SET
RE_APC_FB_SET
RE_OPTALM_SET
RE_CURRALM_SET
Continuous mode
0
1
1
0
0
0
0
1
1
0
00 ~ 11 （0 ~ 3）
00 ~ 11 （0 ~ 3）
11 （3）
0
0
0
×
○
×
0 / 1
0 / 1
○
×
○
Burst mode
SFP_MSA support
×
Logical sum (ORed)
of TXFAULT and
TXDIS
Shutdown request
Power leveling [1]
TXDIS
TXDIS
MOD_CTRL-pin
E_MOD_TC［1］
E_MOD_TC［2］
×
×
EXTALM2
○
○
EXTALM2
/ MOD_CTRL-pin
MOD
EXTALM2
_CTRL
RE_PWR_SEL
E_BIAS_TC［0］~［3］
E_MOD_TC［0］~［3］
×
×
Power leveling [2]
□ ［*1］
□ ［*1］
○ ［*2］
× ［*2］
APC_FF function
APC_FB function
RE_OPTALM
□ ［*1］
□ ［*1］
× ［*2］
OPTALM
RE_TIMER_OPTALM
E_CURRALM_BIAS_TC
E_CURRALM_MOD_TC
× ［*2］
CURRALM
［*1］ These functions are determined by the corresponding EEPROM / Register setting. Therefore the operations
of “□“ depend on the user’s setting.
［*2］ In Burst mode setting (RE_BURST_SET＝“1”, RE_SFP_SET＝”1”), it is assumed that only APC_FF
function is used and no APC_FB function is used (Monitor PD, CURRALM and OPTALM are not used).
[*3] Setting of RE_SFP_SET＝“0” and R_PWR_LVL1_SET＝“1“ is prohibited.
-12-
<MS0290-E-01>
2004/8
AKM [ ASAHI KASEI MICROSYSTEMS ]
