TMS320DM642 Datasheet, PDF (114/178 Pages) Texas Instruments – Video/Imaging Fixed-Point Digital Signal Processor

TMS320DM642
Video/Imaging Fixed-Point Digital Signal Processor
SPRS200J – JULY 2002 – REVISED AUGUST 2005
HEX ADDRESS RANGE
01B4 C28C
01B4 C290
01B4 C294
01B4 C298
01B4 C29C
01B4 C2A0 – 01B4 FFFF
Table 5-31. McASP0 Control Registers (continued)
ACRONYM
RBUF3
RBUF4
RBUF5
RBUF6
RBUF7
–
Receive Buffer for Serializer 3
Receive Buffer for Serializer 4
Receive Buffer for Serializer 5
Receive Buffer for Serializer 6
Receive Buffer for Serializer 7
Reserved
REGISTER NAME
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Table 5-32. McASP0 Data Registers
HEX ADDRESS RANGE ACRONYM
REGISTER NAME
3C00 0000 – 3C0F FFFF
RBUF/XBUFx
McASPx receive buffers or McASPx transmit buffers via
the Peripheral Data Bus.
COMMENTS
(Used when RSEL or XSEL
bits = 0 [these bits are located
in the RFMT or XFMT registers,
respectively].)
5.9.3 McASP0 Electrical Data/Timing
5.9.3.1 Multichannel Audio Serial Port (McASP) Timing
Table 5-33. Timing Requirements for McASP (see Figure 5-33 and Figure 5-34)⁽¹⁾
NO.
1
t_c(AHCKRX)
2
t_w(AHCKRX)
3
t_c(CKRX)
4
t_w(CKRX)
5
t_su(FRX-CKRX)
Cycle time, AHCLKR/X
Pulse duration, AHCLKR/X high or low
Cycle time, ACLKR/X
Pulse duration, ACLKR/X high or low
Setup time, AFSR/X input valid before ACLKR/X latches data
6
t_h(CKRX-FRX)
Hold time, AFSR/X input valid after ACLKR/X latches data
7
t_su(AXR-CKRX)
Setup time, AXR input valid before ACLKR/X latches data
8
t_h(CKRX-AXR)
Hold time, AXR input valid after ACLKR/X latches data
(1) ACLKX internal: ACLKXCTL.CLKXM=1, PDIR.ACLKX = 1
ACLKX external input: ACLKXCTL.CLKXM=0, PDIR.ACLKX=0
ACLKX external output: ACLKXCTL.CLKXM=0, PDIR.ACLKX=1
ACLKR internal: ACLKRCTL.CLKRM=1, PDIR.ACLKR = 1
ACLKR external input: ACLKRCTL.CLKRM=0, PDIR.ACLKR=0
ACLKR external output: ACLKRCTL.CLKRM=0, PDIR.ACLKR=1
ACLKR/X ext
ACLKR/X ext
ACLKR/X int
ACLKR/X ext
ACLKR/X int
ACLKR/X ext
ACLKR/X int
ACLKR/X ext
ACLKR/X int
ACLKR/X ext
–500
–600
–720
MIN MAX
20
10
33
16.5
5
5
5
5
5
5
5
5
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
114 DM642 Peripheral Information and Electrical Specifications