am85c30 Advanced Micro Devices, am85c30 Datasheet - Page 41

• Manufacturer Part Number: am85c30
• Description: Enhanced Serial Communications Controller
• Manufacturer: Advanced Micro Devices

Notes:
1. Open-drain output, measured with open-drain test load.
2. RxC is RTxC or TRxC , whichever is supplying the receive clock.
3. TxC is TRxC or RTxC , whichever is supplying the transmit clock.
4. Parameter applies to Enhanced Request mode only.
SWITCHING CHARACTERISTICS over COMMERCIAL operating range (continued)
System Timing (see Figure 20)
No.
7a
7b
10
No.
7a
7b
10
1
2
3
4
5
6
8
9
1
2
3
4
5
6
8
9
TdRXC(REQ)
TdRXC(W)
TdRXC(SY)
TdRXC(INT)
TdTXC(REQ)
TdTXC(W)
TdTXC(DRQ)
TdTXC(EDRQ)
TdTXC(INT)
TdSY(INT)
TdEXT(INT)
TdRXC(REQ)
TdRXC(W)
TdRXC(SY)
TdRXC(INT)
TdTXC(REQ)
TdTXC(W)
TdTXC(DRQ)
TdTXC(EDRQ)
TdTXC(INT)
TdSY(INT)
TdEXT(INT)
Parameter
Parameter
Symbol
Symbol
RXC
(Note 2)
RXC
(Notes 1, 2)
RxC
(Note 2)
RxC
(Notes 1, 2)
TxC
(Note 3)
TxC
(Notes 1, 3)
TxC
(Note 3)
TxC
(Notes 3, 4)
TxC
(Notes 1, 3)
SYNC Transition to INT Valid
Delay (Note 1)
DCD or CTS Transition to INT
Valid Delay (Note 1)
RXC
(Note 2)
RXC
(Notes 1, 2)
RxC
(Note 2)
RxC
(Notes 1, 2)
TxC
(Note 3)
TxC
(Notes 1, 3)
TxC
(Note 3)
TxC
(Notes 3, 4)
TxC
(Notes 1, 3)
SYNC Transition to INT Valid
Delay (Note 1)
DCD or CTS Transition to INT
Valid Delay (Note 1)
to W/REQ Valid Delay
to Wait Inactive Delay
to DTR/REQ Valid Delay
to DTR/REQ Valid Delay
to INT Valid Delay
to W/REQ Valid Delay
to Wait Inactive Delay
to DTR/REQ Valid Delay
to DTR/REQ Valid Delay
to INT Valid Delay
to SYNC Valid Delay
to INT Valid Delay
to SYNC Valid Delay
to INT Valid Delay
W/REQ Valid Delay
to Wait Inactive Delay
W/REQ Valid Delay
to Wait Inactive Delay
Description
Parameter
Description
Am85C30
Parameter
Min
10
8.192 MHz
8
8
4
5
5
4
5
6
2
2
Max
12
14
16
11
10
7
8
7
8
6
6
Min
10
8
8
4
5
5
4
5
6
2
2
16.384 MHz
Min
10
8
8
4
5
5
4
5
6
2
2
10 MHz
Max
12
14
16
11
10
7
8
7
8
6
6
Max
12
14
16
11
10
7
8
7
8
6
6
AMD
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
TcPc
Unit
Unit
41