adsp-21161n Analog Devices, Inc., adsp-21161n Datasheet - Page 32

• Manufacturer Part Number: adsp-21161n
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-21161N
Multiprocessor Bus Request
Use these specifications for passing of bus mastership between
multiprocessing ADSP-21161Ns (BRx).
Table 20. Multiprocessor Bus Request
Parameter
Timing Requirements
t
t
t
t
t
t
Switching Characteristics
t
t
t
t
t
t
SBRI
HBRI
SPAI
HPAI
SRPBAI
HRPBAI
DBRO
HBRO
DPASO
TRPAS
DPAMO
PATR
CLKIN
BRx (OUT)
PA (OUT)
(MASTER)
BRx (IN)
PA (IN)
RPBA
(SLAVE)
PA (OUT)
(O/D)
O/D = OPEN DRAIN
BRx, Setup Before CLKIN High
BRx, Hold After CLKIN High
PA Setup Before CLKIN High
PA Hold After CLKIN High
RPBA Setup Before CLKIN High
RPBA Hold After CLKIN High
BRx Delay After CLKIN High
BRx Hold After CLKIN High
PA Delay After CLKIN High, Slave
PA Disable After CLKIN High, Slave
PA Delay After CLKIN High, Master
PA Disable Before CLKIN High, Master
t
S R PB A I
Figure 25. Multiprocessor Bus Request
t
H B RO
t
t
D B RO
DP A SO
t
t
D PA MO
HR P B AI
–32–
t
SB R I
t
Min
9
0.5
9
1
6
2
1.0
1.5
0.25t
S PA I
CCLK
–5
t
t
H PA I
Max
8
8
0.25t
H BR I
t
P AT R
CCLK
t
TR PA S
+9
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
REV. A