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ISL78610 Datasheet, PDF (51/98 Pages) Intersil Corporation – Multi-Cell Li-Ion Battery Manager
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ISL78610
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TABLE 21. IDENTIFY TIMING WITH DAISY CHAIN OPERATING AT 500kHz
NUMBER OF SPI COMMAND
DAISY
RESPONSE DAISY
TIME FOR IDENTIFY IDENTIFY + IDENTIFY
DEVICES
SEND TIME TRANSMIT TIME DELAY RECEIVE TIME SPI COMMAND EACH DEVICE TOTAL TIME COMPLETE TIME
(2 MINIMUM)
(μs)
(μs)
(µs)
(µs)
RECEIVE TIME (µs)
(µs)
(µs)
(µs)
1 (Master)
24
0
0
0
32
56
56
56
2
8
50
18
66
8
150
206
356
3
8
52
18
68
8
154
360
514
4
8
54
18
70
8
158
518
676
5
8
56
18
72
8
162
680
842
6
8
58
18
74
8
166
846
1012
7
8
60
18
76
8
170
1016
1186
8
8
62
18
78
8
174
1190
1364
9
8
64
18
80
8
178
1368
1546
10
8
66
18
82
8
182
1550
1732
11
8
68
18
84
8
186
1736
1922
12
8
70
18
86
8
190
1926
2116
13
8
72
18
88
8
194
2120
2314
14
8
74
18
90
8
198
2318
2516
.
TABLE 22. IDENTIFY TIMING WITH DAISY CHAIN OPERATING AT 250kHz
NUMBER OF SPI COMMAND
DAISY
RESPONSE DAISY
TIME FOR IDENTIFY
DEVICES
SEND TIME TRANSMIT TIME DELAY RECEIVE TIME SPI COMMAND EACH DEVICE TOTAL TIME IDENTIFY + IDENTIFY
(2 MINIMUM)
(µs)
(μs)
(μs)
(µs)
RECEIVE TIME (µs)
(µs)
(µs) COMPLETE TIME (µs)
1 (Master)
24
0
0
0
32
56
56
56
2
8
100
34
132
8
282
338
620
3
8
104
34
136
8
290
628
918
4
8
108
34
140
8
298
926
1224
5
8
112
34
144
8
306
1232
1538
6
8
116
34
148
8
314
1546
1860
7
8
120
34
152
8
322
1868
2190
8
8
124
34
156
8
330
2198
2528
9
8
128
34
160
8
338
2536
2874
10
8
132
34
164
8
346
2882
3228
11
8
136
34
168
8
354
3236
3590
12
8
140
34
172
8
362
3598
3960
13
8
144
34
176
8
370
3968
4338
14
8
148
34
180
8
378
4346
4724
ACK (Acknowledge) Command
ACK is used by daisy chain devices to acknowledge receipt of a
valid command. ACK is also useful as a communications test
command: the stack top device returns ACK in response to
successful receipt of the ACK command. No other action is
performed in response to an ACK.
NAK (Not Acknowledge) Command
Receipt of an unrecognized command by either the target device
or the top stack device, results in a NAK being returned by that
device. If a command addressed to all devices using the Address
All stack address 1111 or the identify stack address 0000 is not
recognized by any devices, then all devices not recognizing the
command respond NAK. In this case, the host microcontroller
receives the NAK response from the lowest stack device that
failed to recognize the command. An incomplete command (e.g.,
one that is less than the length required) also causes a NAK to be
returned.
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June 16, 2016
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