Appendix
81
Appendix
Specifications of Interface and Connector
USB (Universal Serial Bus) Interface
Outline
• F
u
ll-speed
t
ra
n
sm
i
ss
i
o
n
a
t
12 Mbps [bps: b
it
s per seco
n
d]
• Pl
ug
& Play, Ho
t
I
n
ser
ti
o
n
& Removal
USB transmission specifications
USB function
Status transmission from printer with USB interface
I
n
order
t
o e
n
s
u
re
t
ha
t
t
here
i
s
n
o lack of s
t
a
tu
s da
t
a,
it
i
s
n
ecessary
t
o per
i
od
i
cally re
t
r
i
eve s
t
a
tu
s
da
t
a a
t
t
he hos
t
comp
ut
er.
However,
it
ca
nn
o
t
spo
nt
a
n
eo
u
sly
int
err
u
p
t
da
t
a
t
ra
n
sm
i
ss
i
o
n
t
o
t
he hos
t
comp
ut
er.
The pr
int
er has a 128-by
t
e s
t
a
tu
s da
t
a b
u
ffer. S
t
a
tu
ses
t
ha
t
exceed
t
he b
u
ffer capac
it
y are
ca
n
celed.
Overall specifications
According to USB 2.0 specifications
Transmission speed
USB Full-Speed (12 Mbps)
Transmission method
USB bulk transmission method
Power supply specifications
USB self power supply function
Current consumed by USB bus
0 mA
USB packet size
(with full-speed connection)
USB bulk OUT
64 bytes
USB bulk IN
64 bytes
Summary of Contents for TM-T20
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Page 129: ...Appendix 129 Page 53 KZ1048 Kazakhstan ...
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