m21353 Mindspeed Technologies, m21353 Datasheet - Page 22

• Manufacturer Part Number: m21353
• Description: 4.25 Gbps Twelve-channel Backplane Equalizer And Driver With 12x12 Crosspoint Switch
• Manufacturer: Mindspeed Technologies

(address 44h), output 7 (address 45h), output 6 (output 46h), output 5 (address 47h), output 4 (address 48h), output 3 (address 49h),
output 2/Group 2 (address 4Ah), output 1/Group 1 (address 4Bh), output 0/Group 0 (address 4Ch). In group switch mode, only addresses 4Ah, 4Bh,
and 4Ch are used.
Register Address: C3h, C4h
Register Name: LOS Alarm Status
Description: Monitors the LOS alarm status for input channels. LOS alarms are latched into this register once asserted. This register is cleared by
setting bit 4 of address 03h to "1" and then back to "0"
Register Address: FCh
Register Name: MIC Checksum
Description: After an EEPROM download, this register contains the checksum calculated value. If this value is not equal to 2Eh after an MIC download,
there was either an issue with the download or the checksum seed value in register 01h is not correct.
21353-DSH-001-B
Bit
7:5
3:2
Bit
Bit
7:0
4
1
0
7
6
5
4
3
2
1
0
00X: Power down
010: Minimum output swing
011: Nominal output swing
111: Maximum output swing
Reserved, set to 0b
00: Output de-emphasis disabled
01: Approximately 2 dB output de-emphasis
10: Approximately 4 dB output de-emphasis
11: Approximately 6 dB output de-emphasis
0: Nominal de-emphasis time constant
1: Higher de-emphasis time constant
Reserved, set to 0b
0: Reserved (address C3h), No LOS on input 7 (address C4h)
1: Reserved (address C3h), LOS on input 7 (address C4h)
0: Reserved (address C3h), No LOS on input 6 (address C4h)
1: Reserved (address C3h), LOS on input 6 (address C4h)
0: Reserved (address C3h), No LOS on input 5 (address C4h)
1: Reserved (address C3h), LOS on input 5 (address C4h)
0: Reserved (address C3h), No LOS on input 4 (address C4h)
1: Reserved (address C3h), LOS on input 4 (address C4h)
0: No LOS on input 11 (address C3h), input 3 (address C4h)
1: LOS on input 11 (address C3h), input 3 (address C4h)
0: No LOS on input 10 (address C3h), input 2 (address C4h)
1: LOS on input 10 (address C3h), input 2 (address C4h)
0: No LOS on input 9 (address C3h), input 1 (address C4h)
1: LOS on input 9 (address C3h), input 1 (address C4h)
0: No LOS on input 8 (address C3h), input 0 (address C4h)
1: LOS on input 8 (address C3h), input 0 (address C4h)
MIC Checksum Calculated Value
:
·
Mindspeed Technologies
Bit Description
Bit Description
Bit Description
Control Registers Map and Descriptions
®
Default
Default
Default
000b
00b
00h
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0b
0b
0b
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
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