ISL94212_15 Datasheet, PDF (61/96 Pages) Intersil Corporation – Multi-Cell Li-Ion Battery Manager

ISL94212
22-BYTE RESPONSE
Tables 46 and 47 show the calculated timing of read operations
for 22-byte responses. This is the timing for Read All
Temperature or Read All Faults command.
TABLE 46. READ TIMING (MAX): 22-BYTE RESPONSE, DAISY CLOCK = 500kHz, SPI CLOCK = 2MHz
TOP
STACK
DEVICE
COMMAND
TIME TO START OF
RESPONSE
(EACH DAISY DEVICE)
(µs)
MASTER RESPONSE
TIME TO COMPLETE
RESPONSE (DAISY)
(µs)
MIDDLE RESPONSE
TIME TO COMPLETE
RESPONSE (EACH MID
DAISY DEVICE)
(µs)
TOP RESPONSE
TIME TO COMPLETE
RESPONSE (DAISY)
(µs)
2
80
391
430
3
82
394
521
433
4
85
396
523
435
5
87
398
526
437
RESPONSE ALL
DEVICES
(µs)
822
1347
1878
2412
6
89
400
528
439
2951
7
91
403
530
441
3495
8
93
405
532
444
4042
9
96
407
535
446
4595
10
98
409
537
448
5152
11
100
411
539
450
5713
12
102
414
541
453
6278
13
105
416
543
455
6849
14
107
418
546
457
7423
COMMAND +
RESPONSE ALL
DEVICES
(µs)
982
1594
2216
2846
3485
4133
4790
5455
6130
6813
7506
8207
8917
TABLE 47. READ TIMING (MAX): 22-BYTE RESPONSE, DAISY CLOCK = 250kHz, SPI CLOCK = 2MHz
TOP
STACK
DEVICE
COMMAND
TIME TO START OF
RESPONSE
(EACH DAISY DEVICE)
(µs)
MASTER RESPONSE
TIME TO COMPLETE
RESPONSE (DAISY)
(µs)
MIDDLE RESPONSE
TIME TO COMPLETE
RESPONSE (EACH MID
DAISY DEVICE)
(µs)
TOP RESPONSE
TIME TO COMPLETE
RESPONSE (DAISY)
(µs)
RESPONSE ALL
DEVICES
(µs)
2
156
480
844
1324
3
160
485
1023
848
2356
4
165
489
1028
853
3398
5
169
494
1032
857
4448
6
173
498
1037
861
5507
7
178
503
1041
866
6575
8
182
507
1046
870
7651
9
187
511
1050
875
8737
10
191
516
1055
879
9832
11
196
520
1059
884
10935
12
200
525
1063
888
12047
13
205
529
1068
893
13169
14
209
534
1072
897
14299
COMMAND +
RESPONSE ALL
DEVICES
(µs)
1635
2836
4056
5292
6547
7819
9110
10417
11743
13087
14448
15827
17224
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April 23, 2015