SAA7109A Datasheet, PDF (171/197 Pages) NXP Semiconductors – HD-CODEC

Philips Semiconductors
HD-CODEC
Product specification
SAA7108AE; SAA7109AE
Table 205 I port FIFO flag control and arbitration; global set 86H[7:4]; note 1
FUNCTION
See subaddress 84H: IDG11 and IDG10
See subaddress 84H: IDG01 and IDG00
I port signal definitions
I port data output inhibited
Only video data are transferred
Only text data are transferred (no EAV, SAV will occur)
Text and video data are transferred, text has priority
CONTROL BITS 7 TO 4
VITX1
X
X
X
X
VITX0
X
X
X
X
IDG02
X
X
0
1
IDG12
0
1
X
X
0
0
X
X
0
1
X
X
1
0
X
X
1
1
X
X
Note
1. X = don’t care.
Table 206 I port FIFO flag control and arbitration; global set 86H[3:0]; note 1
I PORT FIFO FLAG CONTROL AND ARBITRATION
FAE FIFO flag almost empty level
<16 Dwords
<8 Dwords
<4 Dwords
0 Dwords
FAF FIFO flag almost full level
≥16 Dwords
≥24 Dwords
≥28 Dwords
32 Dwords
CONTROL BITS 3 TO 0
FFL1
FFL0
FEL1
FEL0
X
X
0
0
X
X
0
1
X
X
1
0
X
X
1
1
0
0
X
X
0
1
X
X
1
0
X
X
1
1
X
X
Note
1. X = don’t care.
2004 Jun 29
171