EA 9778-1USB ELECTRONIC ASSEMBLY, EA 9778-1USB Datasheet - Page 9

• Manufacturer Part Number: EA 9778-1USB
• Description: Interface Modules & Development Tools USB Programmerboard
• Manufacturer: ELECTRONIC ASSEMBLY

Specifications of EA 9778-1USB

• Interface Type: USB
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Specifications may be changed without
prior notice. Printing error reserved
Request for buffer information
<DC2> = 18(dec.) = $12
<ACK> = 6(dec.) = $06
send buffer bytes ready = count of bytes stored in send buffer
receive buffer bytes free = count of bytes for free receive buffer
bcc = 1 byte = sum of all bytes incl. <DC2>, modulo 256
Protocol settings
<DC2> = 18(dec.) = $12
packet size for send buffer = 1..128 (standard: 128)
timeout = 1..255 in 1/100 seconds (standard: 200 = 2 seconds)
bcc = 1 byte = sum of all bytes incl. <DC2>, modulo 256
<ACK> = 6(dec.) = $06
Request for protocol settings
<DC2> = 18(dec.) = $12
<ACK> = 6(dec.) = $06
max. packet size = count of maximum user data for 1 package (eDIP320-8 = 128)
akt. send packet size = current package size for send
akt. timeout = current timeout in 1/100 seconds
bcc = 1 byte = sum of all bytes incl. <DC2>, modulo 256
Repeat the last package
<DC2> = 18(dec.) = $12
<ACK> = 6(dec.) = $06
<DC1> = 17(dec.) = $11
len = count of user data in byte (without ckecksum, without <DC1> or <DC2>)
bcc = 1 byte = sum of all bytes incl. <DC2> and len, modulo 256
Adressing (only for RS232/RS485)
<DC2> = 18(dec.) = $12
select or deselect: 'S' = $53 or 'D' = $44
adr = 0..255
bcc = 1 byte = sum of all bytes incl. <DC2> and adr, modulo 256
<ACK> = 6(dec.) = $06
>
<
<
>
<
>
<
<
>
<
<
>
<
<DC2>
<ACK>
<DC2>
<DC2>
<ACK>
<DC2>
<ACK>
<DC2>
<DC2>
<ACK>
<DC1>
<DC2>
<DC2>
<ACK>
len
1
2
3
1
3
1
3
bytes ready
packet size
send buffer
D
P
R
A
I
1 = 1(dez.) = $01
3 = 3(dez.) = $03
1 = 1(dez.) = $01
1 = 1(dez.) = $01
3 = 3(dez.) = $03
max.
packet size for
bcc
bcc
bcc
send buffer
select or
deselect
data...
receive buffer
packet size
bytes free
akt. send
I = 73(dez.) = $49
D = 68(dez.) = $44
P = 80(dez.) = $50
R = 82(dez.) = $52
A = 65(dez.) = $41
timeout
adr
bcc
bcc
akt. timeout
bcc
bcc
bcc
This command queries whether user data is
ready to be picked up an how full the display's
receive buffer is.
This is how the maximum package size that
can be sent by the display can be limited. The
default setting is a package size with up to 128
bytes of user data.
The timeout can be set in increments of 1/100
seconds. The timeout is activated when individual
bytes get lost. The entire package then has to
be sent again.
This command is used to query protocol
settings.
If the most recently requested package contains
an incorrect checksum, the entire package can
be requested again. The reply can then be the
contents of the send buffer (<DC1>) or the
buffer/protocol information (<DC2>).
This command can be used to select or
deselect the eDIP with the address adr.
EA eDIP320-8
Page 9