Lines Matching refs:and
19 which has 0x81 family ID integrated chip and DS2490
22 Notes and limitations.
24 - The weak pullup current is a minimum of 0.9mA and maximum of 6.0mA.
25 - The 5V strong pullup is supported with a minimum of 5.9mA and a
33 a write buffer and a read buffer (along with sizes) as arguments.
35 buffer, and strong pullup all in one command, instead of the current
36 1 reset bus, 2 write the match rom command and slave rom id, 3 block
37 write and read data. The write buffer needs to have the match rom
38 command and slave rom id prepended to the front of the requested
40 - The hardware supports normal, flexible, and overdrive bus
43 conditions. If a bus search is in progress and the ds2490 is
47 short, alarming presence on reset, and no presence on reset, but the
51 available, the bulk read will return an error and the hardware will
55 match reads and writes as well as data sizes. Reads and
56 writes are serialized and the status verifies that the chip is idle
57 (and data is available) before the read is executed, so it should
63 most of the time one of the bulk out or in, and usually the bulk in
64 would fail. qemu sets a 50ms timeout and the bulk in would timeout
67 show 0 bytes written. Detaching qemu from the ds2490 hardware and
68 reattaching would clear the problem. usbmon output in the guest and
70 or the host OS and more likely the host OS.